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#1
10-17-2009, 07:49 PM
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500SEL stumble / hesitation
Acquired an 85 500SEL....
Its got a few problems, working them out slowly. The current problem that I am trying to fix is a stumble/hesitation under light acceleration. If I go WOT the acceleration is fine, but less than wot, it stumbles. It doesnt do it all the time, but its does not favor hotter or colder. I swapped in 2 different fuel pressure regulators, and both had the same problem. I have acquired a third, and am going to try and see if its better. Some people told me to clean the ICV to see if it improves. Checked for vacuum leaks, and there does not seem to be any... You guys have any other ideas?
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-Justin 91 560 SEC AMG - other dogs dd 01 Honda S2000 - dogs dd 07 MB ML320 CDI - dd 16 Lexus IS250 - wifes dd it's automatic. 
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