09-08-2005, 12:52 AM
I been slowly going through the new white TC. I had it smogged and it past but just barely on the nox. So I started by cleaning the EGR and the IAC (also had some minor elevated idle issues at times). Then threw in a new set of plugs. I had wires and PCV on order. Found the PCV was bad. Had a new spare in the drawer so no problem there. Around this time I started getting a CEL. Pulled the KOEO & CM codes. KOEO GOT 11 and CM got a 42 - HEGO always sees rich. The CEL only seemed to come on at idle or when braking with the car in gear. Upon accelerating it would go out Sometimes it would come on during very low speed cruise. Since it seemed to happen most during periods of high vacuum, I suspected a diaphram leak in the FPR. Pulled the line to the FPR and only mild smell of gas, but enough to want to check further. Put a vacuum pump on it and took it to over 21". It held vac. just fine. Put a fuel pressure gauge on
it and got 40 psi reference and 45 unreferenced. Right on the upper limit per Ford specs. Moved on to the TPS and adjusted idle and checked base TPS. It was .995V. Little high for my liking so I knocked it down to .925V for a final value. This also brought the idle down from around 1200 to 1000 when warm. Took it out for a mild flogging [Image: biggrin.gif]. No CEL. I can tell that it's running rich, the KS is pulling a lot of timing and that stock exhaust sucks. Fuel pressure does go up 1 for 1 with boost, no problem, but 60 psi fuel pressure for 15 psi of boost on an IHI is too rich for my thinking. Got home and pulled the codes again - no code 42. I'm thinking of throwing on another stock FPR to see if I can bring the FP down 4-5 psi. Kind of want to get FP adjusted before I play without the KS.
it and got 40 psi reference and 45 unreferenced. Right on the upper limit per Ford specs. Moved on to the TPS and adjusted idle and checked base TPS. It was .995V. Little high for my liking so I knocked it down to .925V for a final value. This also brought the idle down from around 1200 to 1000 when warm. Took it out for a mild flogging [Image: biggrin.gif]. No CEL. I can tell that it's running rich, the KS is pulling a lot of timing and that stock exhaust sucks. Fuel pressure does go up 1 for 1 with boost, no problem, but 60 psi fuel pressure for 15 psi of boost on an IHI is too rich for my thinking. Got home and pulled the codes again - no code 42. I'm thinking of throwing on another stock FPR to see if I can bring the FP down 4-5 psi. Kind of want to get FP adjusted before I play without the KS.