Bobbylew
Member
- Joined
- April 16, 2014
- Messages
- 40
- Reaction score
- 9
- City, State
- Pisek, ND
- Year, Model & Trim Level
- 1994 Explorer XLT
Well, I managed to check the back pressure on the right (Bank #1) side and it was Zero at 3000 RPM. That eliminates the Bank #1 Cat, Crossover pipe and Muffler. I'm still trying to get the Bank #2 sensor out in order to check back pressure on that Cat. I'm sure Ford could have made it more difficult to get to these, but I don't know how.
Running up the RPM, the the Short Term Trims reduce. I have blocked off most vacuum ports and that did not help. As was stated before, the Intake seals are new. I am now suspecting a Cam Timing problem. I just found that there is a TSB on this situation for vehicles built before mid-2004 and it involves reflashing the PCM, depending on the current version of software.. That will have to wait until I can get to the dealer, 60 miles away.
There is Zero back pressure on the left bank (#2), so the exhaust system is cleared as the culprit.
Any input from you good folks? Surely, someone has had this situation!
Running up the RPM, the the Short Term Trims reduce. I have blocked off most vacuum ports and that did not help. As was stated before, the Intake seals are new. I am now suspecting a Cam Timing problem. I just found that there is a TSB on this situation for vehicles built before mid-2004 and it involves reflashing the PCM, depending on the current version of software.. That will have to wait until I can get to the dealer, 60 miles away.
There is Zero back pressure on the left bank (#2), so the exhaust system is cleared as the culprit.
Any input from you good folks? Surely, someone has had this situation!
