17536: System Too Lean + Loss of boost...

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Jun 18, 2003 | 08:17 AM

TT180QC

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17536: System Too Lean + Loss of boost...

CEL went on yesterday -- did the searches -- Sounds like the MAF prob. I reset the fault code, and so far, so good.

The question is, since I'm chipped, should I swap back to the stock ECU, and wait for it to happen again before I take it to the dealer?

Or can I just swap the ECU and explain the symptoms hoping they'll find the problem without the fault code?

Can anyone else with a bad MAF give me an idea of how long before I throw another fault?

TIA

Jun 18, 2003 | 08:54 AM

RoninTT

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I would throw one about 10 - 15 miles after clearing it.

Jun 18, 2003 | 08:56 AM

$/\/\eTTalicA's Avatar$

/\/\eTTalicA

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It will keep happening till you replace MAF, I just unplugged mine till i bring it to the dlr>

clear the codes, unplug MAF. The CEL will come one, but the ECU will use the stock maps rather than adjusting AFR according to MAF. Correct me If I am wrong Techies

Jun 18, 2003 | 08:56 AM

HaTTfield

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I had the exact same situation just before my warranty expired. Took a few days to throw the CEL.

Jun 18, 2003 | 08:59 AM

Jim TT

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Been through that..it's hard to say when it will fail for good, it can take awhile.

..One thing for sure is it will fail given what you are saying. It's a good idea to clear the 'low voltage' code after you put the stock ECU back in. Even with the fault codes in their hands some dealers seen to have a hard time figuring out that the MAFS is the problem. JIM