Hey thanx for the info Nick. Yeah, I already covered the O2 sensor. Put a brand new one in and the wires are fine. You're right about my truck running rich. You're also right about the truck running without the info from the O2 sensor at first. On cold start the truck runs without that info cuz there is nothing for the ECM to retrieve (open loop). After reaching running temp, the ECM retrieves info from the O2 sensor (closed loop)and adjusts the air/fuel ratio accordingly. When we hooked up my truck to the Sniffer, as I've come to know it (Exhaust Gas Analyzer), it said I was running rich. We disconnected the O2 sensor and the levels dropped. So I went ahead and changed it. No change in performance though.

We've done the EGR thing too. Again, it's seeminly fine. But I do appreciate your input. There are a lot of posts on this thread but I am grateful for everyone who takes the time to input their ideas. Between all of us, we will squash the gremlin. Though I get extremely frustrated and say things that almost make my truck blush, I won't give up on her. She's not only my daily driver, she's truly my best friend. Whoops, I think the cat just heard that... <img src="/forums/images/graemlins/ignore.gif" alt="" /> <img src="/forums/images/graemlins/rolleyes.gif" alt="" />

Have a Happy Turkey Day...

dawn...