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need help diagnosing problem

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Old 10-31-2005, 08:25 AM
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Default need help diagnosing problem

my maf is bad and im waiting for a new one after some delays. so ive been driving my car w/o a maf and i seem to have some sort of boost / turbo/ bpv issue. i k now the car will be running a bit lean without the maf hooked up but when i get on the gas the turbos seem to spool but they dont seem to be building up any boost liek a possible leak. i am a my 2000 stock engine wise. i was unsure if it wsa a bad bpv so i have a single dahlback valve that i switched back and forth between the possible bad stocks bpvs and it hasnt helped. with my throttle the turbos spool beyond what they ever have then when i release throttle they jsut seem to taper the whine down and it doesnt sound liek a bpv is releasing even though they are both fine. i pulled codes when it first went bad and all i got was a maf code. any help is apreciated.
Old 10-31-2005, 08:28 AM
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Default imo, it's probably still the maf.

just wait and see if switching the maf fixes the problem. but until then, try to lighten up on the throttle.

fwiw, i'm going through the exact same thing right now and have the same symptoms.
Old 10-31-2005, 08:34 AM
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would the maf casue it to spool like crazy and still have no power? is it that lean?
Old 10-31-2005, 08:34 AM
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Default have you pulled codes recently?

i just read your post again and you said "when it first went bad".
Old 10-31-2005, 08:36 AM
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Default you could be limp...

lean = high egt's = limp. limp mode can feel like your car's over boosting but you're actually only boosting to ~5 psi.

mods?
Old 10-31-2005, 08:38 AM
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it was a maf code the first time and pulled agian its teh same thing but the light is still on obvio
Old 10-31-2005, 08:48 AM
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no mods, how do i get out of limp mode? i pulled the ecu for a bit but that dint work
Old 10-31-2005, 09:01 AM
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have you pressure tested for a boost leak?
Old 10-31-2005, 09:07 AM
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Default dont have a pressure tester, prob gonna bring it to TJM in a day or so let them look>>

ive just run out of things i can do to it. i no longer have any ideas on what it could be so im gonna bring it in regretably.
Old 10-31-2005, 09:11 AM
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Default go plug your MAF back in...

if your car starts and immediately dies, you have a huge fvckin' leak. Take it somewhere asap b/c you don't want to drive it like that.

If you drive in the rain or hit a puddle and some of that water gets sucked up in the intake track, say bye bye.


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