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A lean burn condition can be caused by a faulty EGR valve, a leaky intake manifold gasket, damaged or missing vacuum lines, low fuel pressure, poorly adjusted throttle position sensor or fouled injectors. I'm probably missing a few conditions there, but you get the idea.
It's just about impossible for anyone to tell you what's wrong without looking at it.
What else can I help you with?
What is the service engine soon light on a 2002 gmc envoy?
Indicative of problem with engine emission system
Why is the service engine soon staying on in a 2002 Gallant?
Problem with emission system have vehicel scanned to determine problem
What does the service engine light mean on Lexus RS?
Problem with emission system - have vehicle scanned to determine problem
Why is the service engine soon on?
This information can be found in the owner's manual. There is a problem in the emmissions system.
Can a brake problem cause the service engine light to come on?
What model do you have? I am saying no to your question. In most vehicles the service engine light deals with the operation of the "engine", igniton system, exhaust, and fuel system. If there is a problem with the brakes you could see an ABS light (if equiped) or a BRAKE! light on. If the Service engine soon light is on in your vehicle the problem lies in one of those systems. Good Luck
Why is your service engine soon light on in your Chevy blazer 95?
There is a problem with the emmission system are transmission and the computer turns the engine light on to let you know there's a problem. Have engine scanned with a OBDII engine scanner.
Why does Service Engine soon on 2000 sentra appear?
There is a problem somewhere in an emissions control system. Get it fixed.
What does a yellow symbleshaped like a engine in 2001 jetta vw?
Could be "service engine soon" light indicating a problem with emission system - have vehicle scanned to determine problem
Why is the Check engine light on Chevy?
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle.
1997 Geo Metro service engine soon?
usually indicates a problem in he emission control system - have vehicle scanned to determine the problem
Why does the Service engine light on 1998 Toyota land cruiser comes on and stay on?
Problem with emission system- have vehicle scanned to determine the problem
What causes the 'service engine soon' light to glow on a 2003 Chevy S10?
Problem with the emission system have vehicle scanned to determine the problem
