What causes a 1987 Blazer with a 350 to idle good then in gear rough and under a load sputter and backfire and is not fuel injected?

Cars & Vehicles
Car Sounds
Auto Parts and Repairs

The ignition timing is not set correctly or the timing chain is worn out or installed incorrectly.

Previous questionDoes your child have to be in a seat belt while riding in a toter home?
Next questionHow do you use your motor cortex while driving a car?

Related question

What causes a car to sputter and idle rough?

Fuel injector nozzles can become clogged over time, which can lead to a sputtering engine, slow acceleration and the car not having enough power.Vacuum Leak: A leak in the vacuum system can lead to a sputtering or rough running engine.As the problem progresses the vehicle can hesitate or stall wh...

Read more

Why does 350 idles good but cuts out runs rough while driving or under load?

A 350 engine will idle good but cut out and run rough while driving if there is a vacuum leak. This causes too much air to enter the engine under load.

Read more

What causes a car to sputter and idle rough on my 1994 Honda civic lx?

That is not normal. There are many things that could be causing that problem. The easiest and cheapest thing you could do is to replace the fuel filter. Usually they will run just a few bucks at the local auto store. If that doesn't do the trick, try to see if your car is smoking at all and try t...

Read more

What could cause a car to sputter and eventually backfire at high rpms only in 3rd 4th and 5th gear but not in 1st or 2nd?

It sounds like fuel starved. Try the fuel filter or the fuel pump.

Read more

What will cause a 1990 350 not to crank when it is getting fuel and fire and good fuses?

could be many things, probably a crank sensor

Read more

What causes an engine to race when started and then run rough and die often backfiring through the intake?

The year, make and model info would be helpful but a large vacuum leak could do that.

Read more

What is wrong when your car sputters at idle and when you rev up engine it sputters then kicks in and fuel comes out tailpipe?

need to check your evap system or you have a blown head

Read more

What causes a car to not idle in gear but not while in park or neutral?

A vacuum leak (Brake booster).

Read more

What causes a car to backfire and not start?

Engine backfires can be produced by a vacuum leak, bad timing, problems in the ignition system, a faulty sensor, an exhaust leak, or some other system fault.The backfire is produced when unburned fuel ignites inside the intake or exhaust manifold instead of a cylinder.

Read more

What would cause an 87 Honda CRX Si to flood after setting for a short time or setting overnight Car is hard to start followed by gas odor and rough idle sputter for about 30 seconds and then runs ok?

1987... I guess it could have a carburator. So if it does, maybe the carb. is leaking down the intake. That would do it.

Read more

When trans not switching gears only go to 40 then backfires what that mean?

The year, make and model would help. More info please.

Read more

What causes a car to stall then backfire?

Your car backfires when you need a new transmission,or tune up. How do you know the difference? Simple...if your car backfires then wont start, or wont start and then backfires,you need a transmission. If it backfires, and then starts moments after, you need a tune-up. Glad to help...David

Read more

What can cause a car to sputter while in gear but not while in park or neutral?

There are a couple of different things that can cause this. On older and newer cars, it can be a worn or weak fule pump. The pump puts out enough gas while the car is idleing, but doesn't put out enough gas for the increased consumption when it is in gear. It could also be caused by the screen in...

Read more

What would cause a 2000 Toyota 4runner to 'skip' and or 'sputter' during idleing?

check for tune-up. chack mass air flow meter.

Read more

What would cause my 1987 Chevy van to run good then sometimes miss?

Could be as simple as needing a tune up with spark plugs, spark plug wires, distributor cap and rotor, air and fuel filters.

Read more

What causes a 2002 5.4 to idle rough?

I have a 2002 F-150 with a 5.4. The truck idles rough and shakes going between 40-50 mph. I read the codes and it has a cylinder misfire in 8, and fuel is too lean in both banks. I have replaced all 8 injectors a few months ago, along with exhaust manifold, and manifold gaskets. In the past year ...

Read more

What causes a engine to spit and sputter while driving but the car idles fine?

dirt in the carburator, incorrect fuelling or ignition (i.e. spark) breaking down under load.Check that fuel is getting through, fuel pressure & that injectors are spraying correctly, and that plugs are giving a good healthy blue spark. If spark is weak it could be plugs, leads, coil, distrib...

Read more

What can cause a car to idle rough?

Rough idling can also be caused by clogged filters.Bad spark plugs, bad spark plug wires and a bad distributor cap are other common causes of rough idling.These items are all important parts of what keeps a vehicle running.Spark plugs provide the spark that ignites the air and fuel mixture within...

Read more

What causes car to idle up and down when in park and then cuts off?

It is difficult to diagnose a problem like this via the internet, but it could be the air flow meter.A faulty air flow meter will often cause this type of symptom. Its a good place to begin the process of elimination, at least

Read more

98 z71 starts and runs very rough then slams into gear and dies what could cause this?

I have to guess at a few things but..I am guessing because the engine has serious problem with how it is running the engine computer has increased the idle speed very high to try and keep it running.If this is the case putting it into gear will bang very hard and drop the engine speed to below wh...

Read more

What causes your 5.7 hemi to idle rough with no codes showing?

It is possible that the engine is running roughly because of a clogged fuel filter. Many times, that will not register a diagnostic code.

Read more

What causes a 93 Saturn to hesitate and sputter when shifting gears?

egr valve may be clogged or bent. where do i find the egr valve on my 93 Saturn sc2?

Read more

If bulbs and fuses good then what else could cause turn signals not to work?

In (my) order of probability

Read more

What would cause your car not to go in gear and not want to run?

it sounds like a clutch or you have ruined your gear box, likely your clutch though, either way you need to go to a mechanic, good luck.

Read more

What would cause rough idling and hesitation when driving in the rain?

check for moisture under the dist cap and wipe it out. Try spraying a bit of WD40 inside and clean contacts with fine sandpaper or something of that nature. Is the cap cracked? Check it closely, as hairline cracks have been known to cause this sort of problem. If the car is not realtively new and...

Read more

What would cause engine to idle rough and die when car slows down or stops?

It depends on what kind of car you have. Three things are needed to "make fire" in the engine: fuel, air, and spark. If any of these is interupted then it can sputter or just not run. How those three gets there depends on the car. Older, carbureted engines mixed fuel and air in the carburetor and...

Read more

What causes engine to idle rough and hesitate when driving after reach normai operating temp?

Could be many things. My first guess would be a vaccume leak. When a fuel injected car reaches normal operating temperature it goes from what's called "open loop" to "closed loop" Under "open loop" the car runs on default factory settings. After it reaches operating temperature, if nothing is w...

Read more

Can a damaged oil sensor cause a car to idle and drive rough?

It's extremely unlikely.Much more likely is rough running (usually due to engine management fault) causing a lack of oil pressure.Also, keep in mind that an excessively worn engine can cause both low or erratic oil pressure and rough running, but this will usually be accompanied by a knocking noise.

Read more

What causes a vehicle to not idle?

Check all vacuum lines , make sure none have blown off

Read more

What causes a fuel injected motor to run extremely rich?

I had the same question, so I asked my father-in-law who owns a shop. He suggested first changing the air filter, then moving to the oxygen sensor, even though the check engine light is not on. He also said to check the thermostat, if it is not closing than the sysstem is not closing which will c...

Read more

What cause a suburban to shudder or idle rough at start up in very cold weather?

It may be in need of a good tune up.

Read more

What causes your 3.0 v6 ranger to run rough It accelerates and then dies?

it may be getting too much fuel and not enough air. this would cause it to run rich. it may be getting too much fuel and not enough air. this would cause it to run rich.

Read more

What causes a car to hesitate to start and then stalls whether in motion and not in motion?

You provide limited information but at first glance it sounds like a problem with engine timing (perhaps spark plugs). I would take the car to a mechanic for diagnosis.

Read more

What makes a car backfire under heavy acceleraation in 1st gear?

spark plugs and or a good tune uphave the timing checked on vehicleould also check distributer points and distributor cap

Read more

What cause fuel to be to rich in a 2.5L 4cyl 1987 Chevy s10?

The first step is to consult your owner's manual and make certain that you are using the correct gasoline. This may also be a fuel pump, fuel pump sensor, or fuel injector problem.A faulty coolant temp sensor can also cause a rich condition.

Read more

What is the difference between a fuel injected and a non-fuel injected?

The primary difference is the way fuel is delivered to the engine. In one system a carburetter is used. The carburetter simply provides a supply of fuel that is metered to the intake manifold via jets, the air flowing through the carburetter pulls along gasoline which is atomised in the airstream...

Read more

What could cause a 1994 351 to run rough and smell of unburned fuel?

well i'd give it a tune up new plugs new cap and rotor new plug wires and have timing checked Fuel pressure regulators can also go bad, or your EFI poppets are clogged and you're not getting a full "spray" from them.

Read more

What causes rough idle after your car has set at an idle for 10 to 15 minutes and then dies and will start back up in about 20 minutes?

There is not much information here because different automobiles can the same symptom with a totally different cause. Giving it my best guest I would say that you have a leaking fuel pressure regulator the engine can handle the extra fuel when driving but run much too rich when idling.

Read more

What causes a 1987 Dakota to hesitate while driving like its not getting enough fuel or to much?

fuel pump and or filter/ catalitic converter

Read more

Why might a 2001 Lincoln Town Car with a 4.6 sputter at idle and seem to miss at acceleration as if it is starving for fuel?

A friend told me to change the fuel filter which is mounted under the right under side of the frame near the right rear passenger door. All you need to change it is a small screw driver to lift the tabs holding the hoses in place, and a 5/16 hex head nut driver to remove the clamp holding the fil...

Read more

Are you not supposed to give it gas when starting a car with fuel injection?

It's been my experience that the MAIN computer gets confused and doesn't know what ratio of gas to air mixture is needed when you pump the gas for starting a fuel injected car. It's VERY easy to flood it I've found.Under normal conditions, if you leave your foot off the gas [AS USUALLY RECOMMENDE...

Read more

What is causing a 91 corsica 2.2 to get to much fuel and load up or shut down?

If the check engine light is on, or has been on, have the codes read, they may help lead you to the problem.

Read more

What causes a 1973 Pontiac 350 engine to backfire through the exhaust?

A large backfire is most likely caused by a bad spark plug or plug wire. Unburned air and fuel pumped into the exhaust will often be ignited by the other cylinders still burning exhaust gases. Also check your ignition timing, if it is late and you have a rich mixture you can get a backfire. An ex...

Read more

What causes an fuel injection engine to run OK when cold but then splutter at low revs when warm?

You might have a faulty oxygen sensor. Typically, when cold, the engine management system operates in "open loop" mode ignoring feedback from oxygen sensors because they don't work properly until they heat up to a specific temperature range. Once the sensors heat up, the computer goes into "close...

Read more

Why would your car shake when it is in gear and and idleng but not moving Same for when not in gear shakes when it waunts to out of gear. but shake when in gear and at idle?

Check your motor mounts.

Read more

What year did fuel injection become standard and with answering that would a 1995 fiat cinquecento s have fuel injection?

1986 fuel injection came out and yes it is fuel injected

Read more

What causes a car to backfire and push forward?

In three words: Bad ignition timing. Backfiring used to be very common in cars years ago, but electronically controlled "everything" in engine design makes it very rare today in an automobile.

Read more

What causes your 98 tracer to idle ok but run rough when put in drive?

usually caused by throttle position sensor, also can be caused by either low fuel pressure, fuel injectors must have specific pressure to properly operate at running idle, this can also be caused by clogged fuel filter.

Read more

What causes a car to idle rough and jerk while driving at a constant speed of about 40mph?

Depending on the make of the vehicle, it could be any number of things. It could be a plugged fuel filter, air filter, vacuum leak, ignition problems, etc.

Read more

Geo Tracker rough acceleration It idles good cold but as it warms it begins a rougher idle and will not accelerate smoothly actually very rough and sparadict. RPM's act as if it is missing.?

Im having the same problem. Either the cold start things bad or the timings off or both...

Read more

What would cause my car to idle up high and then cut off?

if you have an older model car your carb my have a thermo coil choke and it will cause the engine to idle high... but won't kill it... unless you are in need of a tune up....it could also be a problem with the way your float is adjusted and it will cause the carb to pour gas into the engine makin...

Read more

What is causing my car to shake very roughly all the time upon startup idle and driving?

It could be a bad motor mount or mounts. Motor mounts have rubber in them and go between the engine and the frame. Over time the rubber gets brittle and wears out, causing the engine to shake.

Read more

What would cause a 2001 Gallant 2.4L idle rough when you come to a stop?

I think that this is a GDI engine, and if it is, carbon build-up in the throttle body and inlet tract (which these engines are prone to) is a likely cause. There are products which you can squirt into the inlet tract while the engine is running which are supposed to help shift carbon. It would be...

Read more

On a 1991 Nissan maxima Idle is good at starting car then the idle goes up high for a while then is up and down?

A faulty camshaft can cause your 1991 Nissan Maxima to idle erratically. A diagnostic test could verify the cause of the improper idling speed.

Read more

What is the padding under the hood of a 1987 Toyota Celica GT good for?

It's just insulation-common many cars

Read more

What are the all the possible causes for an 1985 Toyota le van electronic fuel injection not getting gas to the injectors and so not starting?

Faulty fuel pump, fuel pump relay or fuse, fuel filter, connectors or possibly even something else... who knows what without first checking?

Read more

What would cause a 2003 ford mustang to lose power then engine runs rough now?

Pressure test the convertor.

Read more

How hard is it to take out a 2.8l engine out of a 86 blazer and put in a 350?

all depends how good you are with cars and weather it will fit. check dimensions before you do anything and make sure you know what your doing.

Read more

What would cause a car to run very badly with the idle air control unplugged but cut off and not run when it is plugged in?

A hole or crack in the tube leading from the MAF sensor over to the throttle body.

Read more

What can cause a vehicle not to idle?

As the capacity to filter the air going into the engine is reduced, the engine is not able to function properly.There could also be something wrong with the vehicles' electrical components.Bad spark plugs, bad spark plug wires and a bad distributor cap are other common causes of rough idling.

Read more

What causes my 1988 mercury tracer with a 1.6 motor to idle high then when while driving then the rpms jump up and down then the car kills and wont start again for a while?

Bad MAP sensor, throttle position sensor, O2 sensor, many possibility's it would be a good idea to get it down to a repair shop for an exact diagnosis.

Read more

What is wrong with a 1997 SC2 that starts and idles OK until the transmission is in gear and the car is moving then the engine speeds up until the car stops moving and the transmission is in neutral?

If the transmission is in neutral and the engine is racing would indicate that your throttle body cable is binding somewhere. Check the assembly, check by the gas pedal. I have checked with a dealer on the same problem. I have a 96 sc2 and it does the same thing. They told me it idles down due to...

Read more

What would cause the 97 kvf 400 kawasaki to skip in the drivetrain under a heavy load?

Sounds like you need the clutch adjusted or replaced .

Read more

What would cause a car to stall when idling and then lunge a mile or two later?

messed up carb, timing way off, if injectied bad fuel and dirty throttle body tune up ect. good luck

Read more

Car sometimes idles slow and then dies what causes this on a 2001 Avalon?

What!??? please check your mass air flow sensor first. If its dirty, you can clean it with a brake clean spray.. It is located on you intake tube. I had this problem with my 3.0 Camry and now, my Avalon.

Read more

What causes a transmission to not go into gear?

It may happen when trying to get into first gear from a stop, or at any point up and down the assorted gears.Common causes include low transmission fluid, wrong viscosity (thickness) of fluid, or required adjusting of the shift cables or clutch linkage.

Read more

What would cause a misfire but only when the vehicle is under load?

Bad plugs, bad plug wires, carbon build-up in the combustion chamber, incorrect fuel ratio, to name just a few. Consider a tuneup and a fuel system cleaner product at your next fill up.

Read more

What would cause a car not to shift gears?

Every time a gear change is required, the car's computer activates a transmission solenoid, which directs transmission fluid into the valve body to engage the correct gear.When this is faulty or not working properly, this can cause a delay in gear shifting or in some cases cause the car to not sh...

Read more

What would cause your 1992 Chevy caprice to shut off when you put it into a running gear but stay at a good idle while in park?

A vacuum leak can do that. Check the gasket at the base of the throttle body for a vacuum leak.

Read more

What causes a manual transmission to not go into gear?

Low level of transmission fluid.The components in modern manual transmission are always in motion even when the gears are in neutral.If there is no lubricant in the gearbox, you could have done major damage to the engine and gearbox components by running the car.

Read more

What causes a car to not shift gears?

Every time a gear change is required, the car's computer activates a transmission solenoid, which directs transmission fluid into the valve body to engage the correct gear.When this is faulty or not working properly, this can cause a delay in gear shifting or in some cases cause the car to not sh...

Read more

What causes speedometer and tachometer to fluctuate at idle on 96 grand am and cause engine to rev up and down for some minutes then stall?

Do you have a check engine light? If so, get it scanned by a repair facility to make sure you don't do any unnecessary repairs. It could be many things, such as an o2 sensor or throttle position sensor just to name a couple. If you don't have. Check engine light, sounds like a faulty engine contr...

Read more

You had a whole new fuel line installed in your car and your car is now backfiring and idling and will sometimes cut off what is wrong with your car?

That will be impossible to say without diagnosing the car. I will say this. If the car did not have those symptoms before the fuel line intallation, and now it does, it would appear somebody did something wrong. Maybe they had to unplug a sensor in the system to get the bline in past a wiring pig...

Read more

You are replacing a v6 fuel injected motor with a carburated 350 motor how do you hook up the fuel pump on the 350 from the fuel pump in your gas tank?

I believe the pressure will be too great for the carburator.

Read more

91 Beretta starts but runs rough and is backfiring and blowing black smoke when able to get it to stay going running not so rough the car would stall and if i held the gas on was overheated by home?

sounds like coolant temp sensor is bad but also sounds like cat might be pluged

Read more

What causes a car to sputter and misfire when it is raining outside?

Frequently in older vehicles, high humidity or rainy weather can cause poor performance, usually because of a problem in the ignition system. Moisture and condensation may be forming in the distributor. Also, the ignition (suppression) wires may be old and arcing from one cable to another, causin...

Read more

What causes a transmission in 99 ford windstar van to not shift in any gears?

most faults in windstars are the torque converter and driveshaft spindle teeth wearing out.

Read more

Why is Car idling way to fast when in park and in gear?

it idles quickly to save as much fuel, energy, oil, etc. as possible

Read more

What would cause hidden headlights on a 1987 Toyota Celica gt with a 2.0 to come on and off?

The headlight motors are going out. Each headlight has a motor. If you need to replace one, it's best, (and cheapest), to do both of them.

Read more

What would cause a 2001 sonoma to start then die wont idle?

Fuel filters... air pockets in fuel lines if fuel filters have been replaced lately, could be because of alternator is going bad and it goesnt have enough power to keep running you can bang on it with a hammer... works trust me get all the dust and crap out and it will extend life just enough for...

Read more

What would cause a 1987 Honda CRX Si to sputter once the car begins to warm up It runs fine when it is cold?

check the coolant level

Read more

What would cause your automatic car to sputter and jerk bad when accelerating in first gear but be okay once it gets to second?

Try a basic tune up. New spark plugs, wires, cap and rotor. When the vehicle is in first gear and you are accelerating, that is when the most load is on the engine. It sounds as though under a load, you are losing your spark because it is arcing out where it should not be.

Read more

What causes a car to idle high and fast?

vacuum leak or accelerator cable and or linkage sticking.**ALSO...the electronic choke. When the engine has warmed up enough, there shouldbe 12V on the wire leading to the choke from the small relay located on the leftfender wall on the late 70s and early 80s. It may be hidden inside a black meta...

Read more

Bike runs good tell you put it in gear then it dies what is the problum?

check the side stand switch , this cuts out the engine if it (the side stand) is down when you put the bike in gear .

Read more

What causes a car to jerk and then shuts down?

If it starts ok but just lurches before cutting out then it sounds like it is still in gear. If it's a manual, then start it with the cluch pedal in. It might otherwise be a problem with the clutch or gearbox.

Read more

What would cause a fuel pump to not turn on?

Leaky Fuel Pressure Regulator (Controls fuel pressure to injectors, which is critical for starting and proper air/fuel mixture).No power to Fuel Injectors (Due to faulty fuel injector relay, blown fuse, no input signal to PCM from crank position sensor or cam position sensor, or bad PCM driver ci...

Read more

What causes a fuel gauge not to work?

Sending Unit Failure is the most-common cause of a gas gauge not working.The gas gauge might interpret voltage feedback from a dead sender as FULL or EMPTY, consequently pegging the gauge no matter the actual fuel level.Circuit Problems can cause the gas gauge to stop functioning normally.

Read more

What would cause the temperature and fuel and rpm gages not to work at all?

Hi, you dont say which vehicle. These are usually protected on most cars by one or two fuses and the power supplied by a voltage control unit. Assuming you havent got a wiring diagram, sfter checking fuses trying wiggling any relays or black boxes and also tapping lightly any modules or similar i...

Read more

What would cause a fuel pump not to turn on?

A fuel pressure drop can be caused by a clogged fuel filter, which can result in the pump drawing vacuum, which leads to fuel aeration (air bubbles in the fuel).A faulty (stuck) fuel pressure regulator that causes a reduction in fuel pressure can easily be mistaken for a pump problem.

Read more

What would cause a fuel pump not to get power?

Bad fuel pump (Pump should run for a few seconds when ignition key is turned to start, no buzz means no fuel delivery to the engine).Blown fuel pump relay (Relay is energized by PCM to route power to fuel pump when ignition is on).Open in wiring anywhere in fuel pump wiring circuit (power or grou...

Read more

What can cause a car to not get fuel?

Sometimes, if your engine isn't getting enough fuel, the culprit could be your fuel pressure regulator, a fuel leak, a clogged fuel filter, or clogged injectors.But most of the time, it's the fuel pump.The fuel pump can usually be checked fairly easily.

Read more

1993 ford f 350 transmission not shifting right stays in 2nd gear up to 35mph and does not go in reverse right?

your transmission needs servicing or a rebuild. take it to a good transmission shop

Read more

What could cause a 1987 Lincoln Town Car with a 5.0L EFI to stall out?

A failing or bad coil can cause an engine to stall. After cooling for a while, it is often possible to restart the engine.A fuel delivery problem could also cause stalling. For instance, if the car usually only stalls when the engine is under a heavy load, the problem would probably just be a clo...

Read more

2003 grancavan runs rough does not idle very good then the next time it may be ok just had a new tune up and get about 4 miles per gal less millage?

clean the fuel injectors and fuel system

Read more

Why does a 92 Saturn SC2 stutters in gear when idling but not when moving or in park and neutral?

tune-up time...read up on basic diagnosis and engine tuning in a manual... also, try a can of injector cleaner in the tank, and listen for hissing vacuum leaks while the engine is running(under the hood)/// read up on all of this... everyone should have a manual for their vehicle, and the library...

Read more

What do you do when you turn of the ignition on the gm marine 350 gas engine and it does not immediately shut down but diesels then back fires through the carburetor then shuts down?

Did you change the ignition wires lately? If so, you may have cross wired the firing order of the cylinders. Check to make sure that the firing order is correct. Chevy 350's are usually 18436572, but check your manual, also the rotation direction of distributor(unless module). If that doesn't sol...

Read more

Is ok to put a car with automatic trans in gear during normal cold high idle veh has a bit of a kick when put in gear or do you have to wait till idle goes down?

On cold days, you should let the engine warm for a minute or two. Then, if you press the accelerator to the floor for just a second and then let it up. This is done really fast. Floor it and let it right up. The fast idle should release, and hopefully you won't get that kick any more. You may hav...

Read more

Your 1994 Chevy S10 Blazer 4.3 V6 Vortex is running rough on take off it spits and sputters and a poof of black smoke comes out of the exhaust what could be wrong?

one of your problems could be in the injectors they maybe putting to much fuel.

Read more

5spd metro starts but will not move the engine idles and revs but when in gear it will not move the funny thing is that you can fully depress the clutch in gear and the car will not die?

Nothing funny here....bad clutch disc.

Read more

What is wrong with your car if your voltage light comes on and it sputters then tries to die when you hit about 15 mph?

Sounds like the car is running off of battery power and the battery is very low on charge. The charging system has failed.

Read more