Best Answer

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.

User Avatar

Wiki User

โˆ™ 2005-05-14 17:04:55
This answer is:
User Avatar
Study guides
See all Study Guides
Create a Study Guide

Add your answer:

Earn +20 pts
Q: How do you stop rough idling and sputtering on a 92 Pontiac firebird?
Write your answer...
Related questions

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

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 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.

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

What would cause your 1990 300zx idle rough?

my 1990 300zx is idling rough what could cause this?

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 Steering wheel vibrates when car stopped?

Motor is idling rough.

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

Rough idling and hesitation on a 1998 dodge ram 1500?

Rough idling and hesitation can be caused by several different things. The most common causes are; bad spark plugs, bad spark plug wires, and a dirty air filter.

Why would 1999 Chevrolet Cavalier 2.2l run rough when idling?

timing off

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

How do you set the idling on a 1993 Dodge Dakota It is idling when cold but once it's warm it runs rough and ends up stalling out?

You dont you replace the timing control module

What are the symptoms of an ICP sensor problem?

Rough idle, low injector pressure Sputtering stalling. lack of power

At 35mph it runs rough. Also when idling it will quit running, sometimes. Does that sound like I nee?

At 35mph it runs rough. Also when idling it will quit running, sometimes. Does that sound like I need new spark plugs? How many miles are new plugs & wires good for?

How do you spell the sound of a jeep?

Old-style army jeeps were known for their rough engine operation, often described as "coughing" or "sputtering" and "clattering."

Why is my 1998 Chevy Cheyenne idling really rough?

I would suggest a new set of plug wires.

1998 ford contour is idling rough after it is warmed up what do I do?

Scan for codes, some parts store do it free.

What would cause a 1997 Ford Escort to run rough when idling?

The most common cause of rough idling would be a bad or clogged fuel injector. Also look for the hose on your EGR valve. They tend to come off in hot weather. If the hose comes off the engine will definitely run rough. I had to put a small hose clamp on mine to keep it from comming off. Spiritchsr1

2002 Pontiac firebird idles hard when ac is on only how to correct?

An air conditioning compressor places a heavy load on an engine, especially when the engine is idling. If the engine is running rough at idle with the a/c on, try changing the spark plugs, air filter element, and the oil and oil filter. If your car has a four cylinder engine, you may have to turn the idle speed up slightly. Shift the transmission into 'Neutral' while waiting at stoplights to reduce the load on the engine. Buy premium gasoline, instead of regular. Take the car for a long drive on the freeway.

Changed timing belt on 2003 pt crusier now seems to be idling rough?

Belt is probably not timed correctly.

2002 ford explorer sport trac rough idling when car is stopped entire car rocks check engine lights on What could the problem be?

why is my ford sport trac run rough at idling. Being that the check engine light is on, start with having the codes read. Your local auto parts store can help with that at no cost.

Do all ducati monsters run rough?

Pretty much... All Ducati twins seem to have a rough sounding idle. You can hear the clutch rattle and the cylinders make a sputtering sound sometimes... but they sound beautiful revved up. Cheers from citybiker!

Why does your Pontiac Montana sv6 has a rough idle?

yes mine had a really rough idle and it turns out the motor mount needed replacing

What does a vacuum leak cause?

Rough idling and sometimes kills the motor. It could also trip the check engine light to come on.