In reply to a message from Rob in S.C. sent Tue 17 Jun 2008:
Check for vacuum leak sources from damage to the following
Full load breather pipe, RH cam cover.
Air inlet duct hose to throttle body.
Part load breather pipe, LH cam cover to throttle body.
If you find no joy, remove and clean your Mass Air Flow sensor with
CRC MAF cleaner.
Like I said, use another scanner.
The first time I road tested an XJ8 with my brandy new generic
scanner hooked up, after 15 minutes the car lost CAN signal and
went into limp home mode. Rinse and repeat. Fistfull o’ codes. My
first assumption was that the car was freaking out, but of course
it was fine once I drove it without the scanner connected.
That scanner will always pull and clear most P codes, but I use my
WDS to double-check for the full story. I think the proprietary
equiptment is the only way to be certain that car and operator are
in complete communication. When I can keep it working, that is…
Zappy, I’m FAR below you on the electronics learning curve (or
wavelength ?), but I can still appreciate your product evaluations.
Any plans of augmenting my equipment with alternate interfaces will
be a waste, unless I pony up for IDS. Thanks again!
British Auto Care–
The original message included these comments:
After cleearing the CEL, the reader started working. I drove it
to work with the reader hooked up. It logged a P0171 (Lean - left
bank), and a P0174 (Lean - Right bank). The CEL was off when these
Camden, S.C., United States
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