QuestionQUESTION: I have a 1991 STS (Seville) It runs rough when I am ideling. When I am stop at a light and start to accelerat the vehicle hesitates a little and finally goes. Every so often I will be idleing and the vehicle will stall.
I just had a tune up, plugs, wires changed. I think EGR needs changing. I ran the diagnostic code and look in the CHiltons book, says cranckshaft position sensor needs to be changed. Would the cranckshaft position sensor cause this, I thought vehicle would not start if this were faulty. I will send acual code later
ANSWER: I need the code to see what is means.
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QUESTION: The code is E041
AnswerE041 = The left oxygen sensor is running lean.
This can be caused by an exhaust leak at the exhaust manifold or broken pipe prior to the oxygen sensor location.
Could be a faulty oxygen sensor.
A faulty or dirty EGR valve or passages.
You will need Test procedures and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture. I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information.
