In this post Tony2005 mentioned getting a scanner with real-time scaning capability to diagnose a possible fuel problem.

I bought one but I dont know wheher the numbers its giving me are out of spec or not. For instance, short term fuel trim numbers went from 8 to -13 as I was driving and let off the gas. I understand what short trim means, but is there a site that I can get "good" numbers with high and low tolerances so I know if the numbers I am getting are out of spec or not? Im looking for good MAF, fuel pressure, TPS and ignition advance numbers too.

Im totaly new to using scanners, but I refuse to throw new parts at a problem until its fixed.

If you have a Ford CD Manual, you can find the PIDs in the PC/ED Pinpoint tests. If not, I will try and scan and post for you tomorrow.

Edit. File was too big to upload and post. Emailed.

I would really appreciate a scan.

Thanks a bunch