I just changed my fuel filter and its still surging. Its kinda wierd because after 5-10 min of running the surging stops and the car runs normal. Even if the car is warm it will still do this.


I will drive to the store, by the time I get there the surging stopped, Im in the car 5 min, come back out it surges for 5 more min, then its fine.

What might be the problem?

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89 camaro 305 tbi, flomaster 3 chamber cat back, gutted cat, Edlebrock TES Headers, Exhaust cutout, Edlebrock open element, 160 degree T-stat, and a Stage 2 FastChip.

2 kicker comp 12"'s, polk for the rest. Phoenix gold xs2300 to subs, kicker impulse 404XI to 4 speakers, pioneer DEH- P7000R head unit, and finally a 12 disc changer. Full leather interior from http://www.MrMikes.com

 

Dieing fuel pump, dieing injectors

Those are my top two guesses.

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1985 Camaro SC - 2.8L, auto.

Mods:
Removed air baffles, mandrel bent cat-back pipes (but stock replacment muffler, Dynomax Turbo and Catco converter are on thier way)

 

well i'm sure as hell not near as smart as vader and i'm more of a dumbass than anything, but i'll take a guess at it. i'd check the tune up, always a good place to start, fuel preasure and volumn, the injectors, and egr. be good to run it on a scanner to check the injector and other engine parameters.

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ICON Motorsports
1st & 3rd
MM Black Diamond 538 F&AM

 

Take the IAC out of the throttle body. Clean it with carb cleaner and also clean inside the TB where the IAC goes.

While you have it apart clean the TB thoroughly.

Also run a code scan. You may have a faulty CTS.

Lotsa' luck....


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Mike L.

"If it feels good - stay in it "

1987 IROC Z TPI 350 A4 3.27 Borg-Warner.

Mods: 2300-2500 Stall Converter, Shift Kit(GM parts), TPI Specialties Stage 3 PROM, Modified Airbox w/ K&N's, homemade cold air, Relocated MAT sensor, Gutted MAF, 160* thermostat, Accel 8mm Wires, bypassed TB coolant, Flowmaster 3 chamber single 3" in/out muffler, 3" MAC mandrel intermediate, custom dual !cat Y-pipe. airfoil, ported plenum. !smog

http://www.MichaelLasiuta.home.att.net

**BOYCOTT LAPEER DRAGWAY**

 

Check your Throttle Position Sensor. This is the second time that I have to get mine replaced. It's a little black piece of plastic with a plug and 3 wires on the left side of your TBI.

 

IT only started to surge I think after I put in some STP fuel injector cleaner in the gas tank. It said it treated up to 20 gallons and I put in 13 gallons of gas. I figured it may have been bad gas and/or cleaner so I jsut added 8 more gallons of a different company's gas. It still surges though.

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89 camaro 305 tbi, flomaster 3 chamber cat back, gutted cat, Edlebrock TES Headers, Exhaust cutout, Edlebrock open element, 160 degree T-stat, and a Stage 2 FastChip.

2 kicker comp 12"'s, polk for the rest. Phoenix gold xs2300 to subs, kicker impulse 404XI to 4 speakers, pioneer DEH- P7000R head unit, and finally a 12 disc changer. Full leather interior from http://www.MrMikes.com

 

I find keeping my hand out of my pants Keeps my surgeing problems to a minimum.

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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver 15.26 @ 87.0
Reader's ride -> My Ride

Just another Hot Rod kid, or thats what they all tell me.
Livin' the Stereotype