Service Engine Soon Light, wont go off but the car runs great???

anyone else got the SEL coming on and off all the time but the car allwasy runs great???



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http://PCperformance-usa.com/86bird/86bird.html

 

get a code reader and check whats poping the code. Wally world 15 bucks or make one with some wire.

 

Just bend a paper clip into a narrow U shape and put it to the top 2 on the right on the diagnostic connector.

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Red 1986 SC, 2.8L, rebuilt 700R4, 3.42, t-tops, 167K miles and counting, K&N air filters w/ removed air baffles, hopefully more to come!
RIP #3

 

well all codes have been fixed but i still get the low voltage to fuel pump or a bad ecm code,

but again the car runs great, if i had low voltage i dont think i would get proper fuel flow but it does, and cant have a bad computer cause im know it would not run right then either.

it like only thing broke is that light.

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http://PCperformance-usa.com/86bird/86bird.html

 

So you're getting code 54? Run through the diagnostic chart; I've typed it up here: https://www.thirdgen.org/messgboard/...ML/000842.html Or, bring it to a shop. You'll either find out that all the wires have the voltages they should, or that you need a new computer.


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-Tom P (Hot rodded 1986 Firebird 2.8l)

 

Just because your car IS RUNNING GOOD FOR now does not mean its IS NOT going bad. Alot of times the computer will go into whats called a "limp home" mode where the computer will run the car on nothing but preset defaults, and use no "real world" info. If you hear the pump kicking on and off and have no significant drop in fuel pressure(checked with guage) then sad to say its the comp.

 

hey 86 bird man I had that code here a whil back and I dind't have a clue but I noticed I have I guess it was vacume Lines broken to the left (if facing engine) of the intake about 6-7 inches from the firewall behind the pvc valve(I think thats what it is). It was a black half cigar shaped cylindar with 3-4 black plastic hoses coming out of it. One went behind the intake the other went to the intake up front. Where it was broken was at the cigar shaped thing. Once I replaced that from a junkyard I reset the battery and ran the codes again no 54. But I still got my damn code 34 wiht no voltage meter to test whats broke :-( and my maf is of cause the tap the maf test passes with no stutter.
If some one can take a shot of there engine I can circle what I'm talking about. But it has to be a fuel injected model.

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1987 Chevrolet Camaro
2.8 Ltr HO Cut air boxes K&N Filters Gutted Cat (Did I say gutted opps don't tell the officer)
Duel catback Exhaust With Flowmaster series 80 dual 5"X24" MONSTER Echos
97 Firebird 16X8" Rims