CRD Junkies,
The pain continues post oil seal replacement. I was flashed the red lightning bolt of doom after taking the car out recently for a fresh tank of fuel - Threw codes: P2099 (Turbo Underboost) and
P0402/P0401 (EGR Flow Excessive/Insufficient). Additionally, the engine is making a loud "pop" noise about every 30 seconds in what seems to be the passenger side of the engine bay. I scanned further and noticed a "
U1132" code, but have just changed the alternator, everything was seemingly fine, followed by gremlin chaos. I replaced the vacuum pump seals (was leaking oil on the alternator) and got a new
alternator from Napa (some chatter on the U1132 issue has come from Valero alternators being used instead of Bosch - I will check the rear ground on the alternator when I move it back into the garage). I'll check the grounds by the airbox and battery as well, maybe give connections a once over with dielectric grease.
I cleaned the EGR when I took the manifolds off, but I'll go get some contact cleaner as I think the electric contacts may be going haywire throwing both of those codes simultaneously(401/402). I've replaced both the EGR (about 5 years ago) and my actuator (3 years ago) and haven't had an issue with the vehicle. Maybe there is some dust or leftover grime in the connections? Will also pull the MAF and check it out as well.
This happen to anyone else? I don't have any tunes on the car and I've been running it pretty much stock. Only thing that's not fresh in the car is the fuel filter (changed oil and coolant during the seal job). I used the Swirl Delete Plug from CB and removed the flaps when I cleaned the intakes. I bought a new elephant hose and seal, along with PVC valve and installed it when putting the car back together. If anyone can help with this "popping" sound, I'd appreciate it, never heard it before and it's occurring at idle now.
I'm going to move the car back into the garage and change the fuel filter (think boost fail is related to fuel not getting to the rails fast enough and old diesel fuel) as that's been mentioned in the forum before. Will then check turbo actuator (it is moving when engine revving) although it seems fine. Car only goes into limp mode when it's being driven in gear. Appreciate any insights you may have.
Damn Gremlins,
CG