3rd Gear Poster
Join Date: Aug 2003
Location: Centreville, MD
Originally posted by indiana
The fuel pressure stays at 40psi in idle. There is only 16,000 miles on the regulator. I'm also having a idle problem. It idles ok in park but as soon as you put it in gear the rpm's drop but the car doesn't die. In gear it idles a little rough. Could the regulator be causing the rough idle too?
The fuel system has to be able to maintain pressure when the engine is shut off and still hot...if not, the fuel will vaporise in the lines and cause a situation like you describe. Leaky injectors or check valve will allow pressure "bleed-off" causing a poor hot restart. Dirty/leaky injectors can also cause a rough idle. Faulty engine temp sensor can raise hell, too!
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