why is my n/a running dead lean at all rpms including idle?
01-21-09, 05:57 PM
#1
I "lost" my emissions....
Thread Starter
why is my n/a running dead lean at all rpms including idle?
i replaced my omp lines and put it all back together and now it runs terribly lean. its not idling high, but i have to set my safc at +25ish percent to maintain an idle of 1000 rpms, any lower and it dies. the motor also is running very rough, decent amount of shaking and that "cough" idle.
if i rev the motor the gauge stays lean, and after i let off the gas it bounes up for a second then buried its self in lean again
btw it never had this problem before.
if i rev the motor the gauge stays lean, and after i let off the gas it bounes up for a second then buried its self in lean again
btw it never had this problem before.
01-21-09, 06:01 PM
#2
i replaced my omp lines and put it all back together and now it runs terribly lean. its not idling high, but i have to set my safc at +25ish percent to maintain an idle of 1000 rpms, any lower and it dies. the motor also is running very rough, decent amount of shaking and that "cough" idle.
if i rev the motor the gauge stays lean, and after i let off the gas it bounes up for a second then buried its self in lean again
btw it never had this problem before.
if i rev the motor the gauge stays lean, and after i let off the gas it bounes up for a second then buried its self in lean again
btw it never had this problem before.
01-21-09, 08:27 PM
#3
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Sounds like you have a vaccume leak somewhere. The engine is sucking in air that has not gone through the MAF; not enough air to make it idle high but enough to cause issues. Start by checking all the vaccume lines you had off while you were working on the OMP. If you have to take the UIM back off again also remember to check the big rubber gourments at the bottom of the injectors.
01-22-09, 09:57 AM
#6
My car can run without the leading coils plugged in
but yeah... now that you mention it, a vacuum leak would explain it nicely and probably more likely...
01-22-09, 11:32 PM
#7
I "lost" my emissions....
Thread Starter
it was vac leaks, the damn vdi was sucking air between the plate and manifold, and i had acidentally put a turbo bac valve on as well. thanks guys
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