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Could be a number of things. Start by performing any maintenance items that are due and listed in you owner's manual. If you have not done so, replace all vacuum hoses, including the brake booster hose. Check the booster for a cracked or leaking diaphragm. Replace the hoses one at a time to avoid getting confused. If it idles rough but runs good under acceleration, then a vacuum leak is probable.
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1999 Dodge Grand Caravan 3 point 3L is sputtering backfiring and rough idling but no check engine light is on Any suggestions as repair shops cannot figure out problem?
have they check the timing on it. sometimes when timing is off by a few degrees it would cause both rough idle and backfiring. also check for a dead cylinder.
What is wrong with my 1998 Navigator when the check engine light is on and it is idling rough?
Have vehicle scanned to determine the problem Possibly a bad ignition coil
Why does a 1998 Mazda 626 have a rough idle while it is in Park?
It probably needs a tune up. My 1998 Mazda 626 was idling very rough, so I did a tune-up by replacing the spark plugs and wires. This made the engine run better, but the rought idling continued. I took it to my mechanic, and he found a vacuum leak somewhere, and $270 later, it idles smooth as glass
Why would your car idle rough stall and sometime overheat?
Its idling rough because you probably have a blown head-gasket and lost compression at two cylinders you need to remove all spark plugs and check each cylinders compression.
If the engine light came on at a stop light and it is sputtering and white smoke is coming from the exhaust what is wrong?
White smoke is a good indication you have a blown head gasket. And/or a cracked head. Did you noticed, when it happened that the engine started running rough? Best i can do with little info.
Rough idling sputtering what is causing it in your 1996 Chevy Corsica?
If you have replaced plugs and wire most likely one of your coil pack usually run about $50
94 Pontiac firebird rough running at all speeds?
service engine light on? Have vehicle scanned to determine problemCheck for vacuum leak
What is rough idling?
Rough idling is whenever the vehicle's motor "misses" or does not fire causing an imbalance and a loss of rotation reducing the motor's power and causing excessive shaking.
1999 Dodge Grand Caravan 3 point 3L is sputtering backfiring and rough idling but no check engine light is on Any suggestions as repair shops cannot figure out problem?
have they check the timing on it. sometimes when timing is off by a few degrees it would cause both rough idle and backfiring. also check for a dead cylinder.
What would cause your 1990 300zx idle rough?
my 1990 300zx is idling rough what could cause this?
2000 Pontiac firebird 3.8 running rough getting worse now engine light on?
fuel injectors are pluged take them out and put a power and a ground to the wire ends and blow them out or just replace them
Why Steering wheel vibrates when car stopped?
Motor is idling rough.
What are the symptoms of an ICP sensor problem?
Rough idle, low injector pressure Sputtering stalling. lack of power
What would cause a 1996 Pontiac firebird to start up but it idles rough and when you step on the gas tha car dies?
distributor timing most likely On my 1998 firebird -- I had a similar problem, it turned out to be one of the vacuum hoses came off of the intake manifold -- I would visually check all of those first.
Why would 1999 Chevrolet Cavalier 2.2l run rough when idling?
timing off
Your 1986 Honda Accord is idling rough and dies when you turn a corner or stop What could be causing this?
My 1986 Honda Accord Dx just started idling rough and dieing at turns and stops it is a carburated 2.0 witha maunal transmission
What would make your car start right up but have rough idling and shut off?
a longer cam shaft will make a car idle rough
