Fuel pressure

[dragoontwo]

I did a search, but really didn't find what I was looking for. The symptoms are - upon first start after sitting for a while, the idle will go up, dip down just below 500, and then come back up to normal. Also, if you sit for a bit sometimes, you can hear an audible "whoosh" sound. Is there a check valve or something I can replace instead of the pump itself? I also have an ECU code of 22, but I'm sure it's not related...

Oh yeah.... cycling the key on and off to try to build up pressure doesn't work, and results in the "whoosh" sound again.


Mike