If the car's idle/closed-loop/low-throttle-application/engine-in-vacuum was affected by R&R'ing the Vortec FPR, then either it's broken or you have the fuel plumbed incorrectly. Cleaning the FPR shouldn't have caused the issue to get better or worse when driving in vacuum.
Oh, wait, you said it seems to work fine under WOT and/or once the engine's up to operating temps? Perhaps the O2 sensor is throwing some crazy values at the ECU while it's warming up? Although typically the ECU shouldn't even car about the O2 value until the car's reached a certain temp. I guess my money's on base timing (perhaps it's too low...enough so to cause issues when in overly-rich warm-up mode) or something involving the FPR. |
For what it is worth; when my 4 wire O2 crapped out, I went back to the OEM single wire that started out in the car in the first place. It is mounted right after the turbo in the RMDP. A couple of times recently I have just started the car and taken off cold and get all sorts of bogging, CEL, and stalling. It is definitely being made much worse because if I hit the slightest boost the Emanage throws in even more fuel because of the O2 signal being low or non-existant. As soon as the O2 heats up, everything is fine.
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As posted earlier i have cleaned the AFM contacts, but i didn't tension the brush sliding over the contacts to much. And it made no difference. Now i have tensioned the brush a little more, this seems to work a lot better.
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Originally Posted by danscreations
(Post 70306)
It's gotta be timing, but don't understand why greddy would provide a FMU that would flood the car due to the retarted timing it calls for. Then again maybe i'm wrong.
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Originally Posted by braineack
(Post 70388)
It's not the FMU's fault, it's the increased intake temperature's fault (ping)....Throw an intercooler on there, drop the intake temps, advance the timing.
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Even at a low boost level with Bipes you can at least have a 10°, 12°, 14°, 16° base and pull to 6°.
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TurboXS BOV (atmospheric) |
my car does it too.... it just hiccups while cruising at 70mph. It might do it once every 40 miles or so then fine. It just has one very short hiccup then back to normal again...
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mines still doing it after all i changed.
I really am at the end of my teather. Only thing I have not changed is the fuel filter and the Vortech fpr. I am gonna go to the dyno to see what AFR's the car has. I really feel like ditching the turbo at the moment. stupid car.:vash: |
Originally Posted by jayc72
(Post 70478)
This might be a possibility.
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