2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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Running really rich search was useless.

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Old 11-04-03, 02:15 PM
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Running really rich search was useless.

I've been searching for 2 days straight 3-4 hours a day for how to adjust the air fuel mixture. I have tried everything you guys have said to no avail.... My car is running so rich it can make your eyes water. I was on the interstate the other day and a friend of mine a mile or so back called me and asked if i was on I-840 cause he thought he could smell my car!!! I was on the interstate....it's rediculous. can someone point me to a full air fuel adjustment webpage? Thanks my mpg is around 5mpg right now....
Old 11-04-03, 02:19 PM
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there is no air/fuel adjustment for a stock FC. Only for idle. Once your off idle, your ECU takes over.

Change your 02 sensor, and scan your ecu for codes. Possible you have a bad sensor somewhere.

Jarrett
Old 11-04-03, 02:21 PM
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Most likely it's definately your O2 sensor... Mine was bad and good lord, i had hooooribble mileage - 170 miles in one tank! Id check it, you could go take it by a shop that has a meter you hook up to read the o2 sensor and it will map out a whole thing that shows what it's doing.


Justin
Old 11-04-03, 02:26 PM
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yeah 176miles to a full tank. i'm gonna change the o2 sensor tommorrow.. $42 not too bad..
Old 11-04-03, 02:49 PM
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where did you find a new o2 for 42 dollars?!!??!

i had to get a crappy autozone universal o2 sensor, and i dont even think it works right.. I had to cut and splice to plug it up, and i have a RB header that has an extension wire... People say that you cant cut the wire of an o2, because it changes the resistance or something and makes it read differently.


Justin
Old 11-04-03, 03:57 PM
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hey i live in brentwood... frankline eh?? where at??

89 GTUS (bigger tank)... but i used to get 250 on bone-dry... then i took my cone filter off to stock, now i get 275 when the light comes on!!! WEIRD!!! need to change my O2 also
Old 11-04-03, 05:21 PM
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Originally posted by Mx6-Rx7 Addict
where did you find a new o2 for 42 dollars?!!??!

i had to get a crappy autozone universal o2 sensor, and i dont even think it works right.. I had to cut and splice to plug it up, and i have a RB header that has an extension wire... People say that you cant cut the wire of an o2, because it changes the resistance or something and makes it read differently.


Justin
Autozone......got the Bosch one that is made for our cars, NOT the universal one........ for $36! AND it is a direct plug-and-go installation
Old 11-04-03, 05:32 PM
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i guess they didnt have it in stock or something when i went... ohhhh well, i guess i should get my engine back into my car before i worry about gas mileage.. hehe


Justin
Old 11-05-03, 12:46 AM
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I live in Cool Springs right down the road from the mall.. I'll let you guyss know how the o2 works out.. still trying to time the car right....
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