I just done a hose job and turbo simplification (per rob robinette's site) and replaced my FPD. The car is running very rich (I can smell it in the exhaust), it was doing that before the FPD went out, so that's what I thought was causing it. It wasn't running rich when I got it though, it just happened on the interstate one night. Now, everything's replaced and that didn't fix it. Could the rich condition be caused by a bad O2 sensor or bad FPR solenoid?

 

First off, get a fuel pressure gauge. See what your pressure at idle and with the car off is. If your FPR solenoid is the problem you can tell by hooking the vacuum hose from the FPR directly to the manifold. If it's your O2 sensor, just replace it with the bosch.

 

Explain the hooking up the FPR directly to the manifold more. What should I look for, how can I tell if the solenoid's good or bad, etc? I'm replacing the O2 sensor this week anyway.

 

The FPR is visible looking at the back of the extension manifold. You can take it's hose off and run a new one to the boost gauge nipple. If it works fine after that then it has something to do with your solenoid. I suggest that if it is your solenoid to permanently bypass it because that's what the pro's do(from what I hear). To prevent engine faliure due to solenoid faliure.

 

I've put on a blockoff plate kit and simplified the turbo system (per Rob Robinette's site), so I have the extra nipples on the intake. I'll just bypass the solenoid at the same time I put in the O2 sensor. I'll have to look around for a fuel pressure gauge. Thanks for the advice/info.