Quote:
Originally Posted by HunterGreene
So, to bring those of us up to date who are too lazy to read back through multiple pages, has it been determined that the cause of the chirping is the fuel pump, or the injectors?
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It is absolutely coming from the direct injection high pressure fuel pump, when the engine is HOT, after the car has been revved up over 4k rpm, and the engine is idling with 10% ethanol gasoline in the tank. If any one of those criteria aren't met, then it's very likely that you will not hear the chirp.