Fire-formula 93

iTrader: (1)

I am still trying to figure out what is making my engine run so rich. I thought it was the cracked exhaust manifold throwing off the right bank O2, but I replaced the manifold and nothing is better. Could a vacuum leak cause the engine to run rich somehow? Also my idle is kinda unsteady sometimes so that would also point to a vacuum leak wouldnt it? It is not a smooth idle, it sounds like I have a mild cam in but it is stock, everything is stock except for the exhaust. I am trying to pass emissions but I dont much money, Thanks.

dhdenney

iTrader: (53)

Sounds like it could be vacuum. An exhaust leak would be more of a tick.

1bottled93toenvy

iTrader: (1)

i am having the same problme with my car my idle is messsed up an dreally shifty and it is runnign a little rich...i have a tear in my elbow....also u could clean out ur Throttle body and ur IAC..which is underneath ur TB. Those were 3 things my buddy said to check for

HBHRacing

if you fixed the manifold leak you will still need to reset the adaptives. Other wise it will take time for the PCM to relearn the new long term fuel stratagy. You can give that a try.

Fire-formula 93

iTrader: (1)

I thought unplugging the neg. terminal on the battery for more than ten seconds resets the adaptives? If I am wrong how do you do that? I have a 93 so I cant reflash or anything, that is the only thing that I do not like about 93s.

outdooricon

I've heard you have to unplug it for 30 mins. That's what I do.