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Vacuum leak.
Could also be the idle air control valve. Read this: http://rds.Yahoo.com/_ylt=A0geu5Dx19NHdfsAi8FXNyoA;_ylu=X3oDMTE5MWc1cmxhBHNlYwNzcgRwb3MDMQRjb2xvA2FjMgR2dGlkA1FSVzJfMTE4BGwDV1Mx/SIG=12ug709tt/EXP=1205152113/**http%3a//www.tomco-inc.com/Catalog/27idle%2520air%2520control%2520motors.pdf
What else can I help you with?
What would make a 1977 Ford 400 idle rough?
A rough idle in a 1977 Ford 400 could be caused by issues such as dirty fuel injectors, a clogged air filter, spark plug problems, vacuum leaks, or a malfunctioning idle control valve. It's also worth checking the ignition system and fuel delivery system for any faults.
What is the most common cause of blunt traumatic injury to the spleen?
Car accidents are the most common cause of blunt traumatic injury to the spleen.
Is staph infection the most common source of nosocomial infection?
I believe it is the root cause of most infections.
What is the most common cause of neonatal meningitis?
The most common cause of neonatal meningitis is group B Streptococcus (GBS) bacteria. Other causes can include Escherichia coli (E. coli) and Listeria monocytogenes.
What is the most common cause of waves?
The most common cause of waves is wind blowing over the surface of the water. The friction between the air and water creates ripples, which can develop into larger waves depending on the strength and duration of the wind.
What would cause a 2004 Trailblazer to idle rough?
There are several things that can cause your 2004 Chevrolet Trailblazer to idle rough. The most common causes are a dirty fuel filter or a dirty air filter.
Why would a 2002 Kia Spectra idle rough in drive?
There are several things that can cause your 2002 Kia to idle rough. The most common cause will be bad spark plugs or a bad spark plug wire.
What may cause a 1996 Ford Escort LX to idle rough and that has stalled a few times while reversing?
The most common cause of a 1996 Ford Escort to idle rough is bad spark plugs or bad spark plug wires. A plugged air filter will also cause it to idle rough.
84 Oldsmobile cutlass want start to idle or run?
The most common reason for an engine not to start is a lack of fuel. A plugged air filter can cause and engine to idle rough or not idle at all.
Why does your ranger have a rough idle?
The most probable cause is it requires servicing.
What would cause a 1993 Nissan 300zx rough idling.?
There are several things that can cause your 1993 Nissan 300 to idle rough. The most common cause is dirty spark plugs. Bad spark plug wires can also cause the problem.
What is cause of rough engine idle?
A bad spark plug, a bad spark plug wire, a bad distributor cap, a bad rotor, a bad fuel injector, the firing order is mixed up, a bad valve or a vacuum leak could cause your rough idle.
Your CNG 1999 Crown Vic idles rough for 3-4 minutes then runs fine when warm?
There are several things that can cause your 1999 Ford Crown Victoria to idle rough when it is cold. The most common cause is a leak in one of the vacuum hoses.
What causes vibration in a Honda Accord?
Depends most common on older models is rough idle and or suspension starting to go.
1997 ford escort rough idle when warmed up but ok if AC on full blast What is problem?
When the AC is on most vehicles increase the idle speed. That can often mask the problems that cause rough idle. The primary suspects are: EGR valve, tune-up, sticky or plugged injectors and valves.
Why would 95 silverado not accelerate and idle rough?
There could be several reasons that your 1995 Chevrolet pickup truck, will not accelerate and idles rough. The most common reason is a plugged fuel line.
What could cause a 2004 Ford f-150 engine to idle rough?
If the check engine light has not come on, it is most likely a vaccume leak.
