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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.
Wiki User
∙ 14y ago
Wiki User
∙ 18y agoVacuum leak is the most common cause.
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Will a blown head gasket cause erratic idle?
I blown head gasket can cause an engine miss which one cause a rough idle.
Will a vacuum leak always make your engine run rough?
No, on a fuel injected engine it can cause high idle speed.
What is causing the rough idle on a 2006 Chevy Impala?
There are many things that can cause a rough idle on this car. The computer could be going out, the engine may not have enough oil, and the engine may not be getting enough fuel or electricity.
What happens when throttle body is dirty?
It can cause a rough idle. And it will also cause the engine to die when coming to a stop at times.
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.
Can a malfunctioning computer cause a car to idle rough?
Yes, and the check engine light should illuminate.
Would a faulty gas cap cause rough idle check engine light on and ticking on acceleration?
A faulty gas cap could cause the check engine light to come on but it would not cause a rough idle or engine noises. Start with having your local auto parts store read the codes. The codes will help determine why the check engine light is on.
What would cause my 1989 Engine to suddenly lose some power and idle rough?
if you have a carborator, it may have to be adjusted
Why does 440ci stroker engine have rough idle and engine shake at idle?
because that's kind of a big engine
Can the egr valve affect the idle?
Yes. Carbon deposits in the EGR valve can cause it to stick open a bit and cause a rough idle. If it is bad enough, the engine will stall out when you slow to a stop.
1993 subaru legacy rough idle- what could be causing it?
If an alternator is going bad it can cause a rough idle in a 1993 Subaru Legacy. Cold temperatures in the winter can also cause a rough idle in the Subaru Legacy.
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.
