I have an 86 transam with a 350 and bunch of extras. I just put on hooker shorties without AIR. The check engine light came on after i gunned it, but turned off when i restarted the car and came on again a little while after.

What did the the headers do? Should i adjust my Fuel regulator?

I haven't checked the code out yet, but any prelim guesses. Thanks

 

are you using a new o2 sensor? is it fully grounded? Is there any other problems with the performance of the car? do you know what code it is? the instructions on how to get the code are in the tech files i think. but it could be a ton of things, we just need to narrow it down a bit. that isnt the stock engine is it?

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1986 Trans Am
305 TPI
"If it's not one thing, it's another!"
http://www2.hanover.edu/hierlmeier

 

I can't check the code until friday.

It's not the stock engine.

and the o2 sensor has only 1000 miles on it because i changed it about a month ago.

would too low/high fuel pressure cause a the light to come on. i'm thinking that it might be that.

 

Find out the code number.....only thing you can do until then is just make guesses.

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92 Camaro RS LO3, 5-spd, T-tops
Performance:
SLP 1 3/4" Headers (Coated by Paul Barry Motorsports), Flowmaster Catback Exhaust, Fastchip Performance PROM, Centerforce Dual Friction Clutch, Xact 8mm wires, Open Air Element w/K&N Filter, Z28 Grille w/aftmkt fog lamps
Electronics:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers.
NEXT UP: TBI mods, Edelbrock performer intake

 

did you Fiddle with the AIR pump or the Diverter Valve, ? If those connections report something amiss then you will throw a code.



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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver

Livin' the Stereotype

 

Well, the headers don't have the AIR system. Does that mean it will throw a code everytime now. I thought that when people took it off there were no codes thrown.

 

well, Its My understanding that If You remove the Plugs from the Diverter valve, It will Throw a code, I could easily be wrong However, But I seem to remmeber having the same problem, if You wanna call it that, On mine.

better let someone else chime in with this, as Im Not 100% sure.



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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver

Livin' the Stereotype

 

I cut my wires on my diverter valve cause i dont have AIR but when i put on my headers my O2 sensor wire hit the header burned it and i got a code.

 

You grounded out your O2 sensor when the wire burned and now it's fubared. You need to replace it. Get a Bosch for $20 at any parts store.

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1989 Iroc-Z L98 Original engine-58K miles!!

SLP 1 3/4 SS headers, Hooker Areochamber catback, no cat, BBK AFPR, 3.8L Turbo V6 200* fan switch, MSD GM coil, ported and gasket matched plenum, TB coolant bypass, relocated MAT sensor, screenless MAF sensor, K&N filters, Accel cap and rotor, Taylor SpiroPro 8mm wires, Bosch Platinum plugs, Mobil 1 oil, and more to come...
Best ET not corrected- 14.24@96.76MPH / 2.17 60ft on street tires with the crappy B/W 2.77 gears.

Homepage currently under construction: http://www.iit.edu/~wicktho/len

 

The diverter valve broke, so I took it out. That instantaneously dropped a "CHECK ENGINE". Just a thought.

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'82 Firebird, dead stock, 9 bolt disc rear, over 200,000 miles and still going strong, more to come...
http://www.spinfrenzy.com/stingerssx...easures.html#4

 

*cough* Bull**** *cough*


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92 Z28 L98 350
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Ported stock heads, XR270HR-10 cam, TES headers, Crane AFPR, Flowmaster catback, MSD ignition components.
Best ET 13.5@105 mph
"Take that auto, drop it in first, hold the brakes, stomp the gas and grin from ear to ear! :-)
Click here to see my car at Truspeed.org

Check out TruSpeed at http://www.truspeed.org
Check out the Bin Archive at http://www.truspeed.org/bins.html

 

Where is the diverter valve? Or what is it connected to and from?

 

The diverter valve is on the pass side of the engine and has the little black "box" which is really just a cover for the wire harnesses. It is mounted on the air pump via a short black pipe that bolts to the air pump with 2 10mm head bolts. It also has at least three hoses hooking up to it, and one wraps around the back of the engine to deliver air to the drivers side air tubes. I took all that stuff off and now it's almost fun to change spark plugs.

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89 Iroc-Z LB9 TPI auto 2.73 posi:
3" Dynomax muffler, K&N filters, TB bypass, 3" pipe in place of cat, cleaned and flow-matched injectors, accel 300+ wires, cap&rotor, synthetic oil, flexlite transmission cooler, afpr, !air pump&diverter valve, kicker sound system, soon to attempt engine swap...

 

Would this give me a code if i unplugged the diverter valve?