Thread: 97 gtp chugging issues and backfires

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  1. #1 97 gtp chugging issues and backfires 
    Bluemagic
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    Default 11-20-2015
    Posting for a buddy.

    Car has been chugging and randomly cutting off lately.

    Car stalled and shut off yesterday. Got it towed home and trying to start it and Lights dim and volt gauge shows 14 at key on. Tried to start it and no luck. Exhaust backfired.

    Car has no catalytic converter as well.

    Gas can be smelled when exiting the car. Engine code for short on cylinder 3 injector wire. Snagged another connector and wire for the injector.

    Used the multimeter to check power at the injector connector and it has it.

    Cylinder three shows 2155 misfire history.

    Any idea what it could be?

    Check vacuum lines and those were good.

    Unplug the maf and that made no difference.

    Stumped.

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  2. #2 Re: 97 gtp chugging issues and backfires 
    rynoman03
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    Default 11-20-2015
    Does it go wooo wooo after it chugs? What's the afr like. Sounds rich if you smell gas. Possibly stuck injector. Changed plugs? First thing id do for a misfire. Does missfire change cyl if you swap wires with another cyl. Cleaned all coil pack terminals?

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    1999 GTPHP Tuned, Ported SC/TB, 42#'s, SSAC's, ZZP Modded 1.9's/LS6 Springs/Manley's, TransGo Shift Kit, Poly Uppers, KYB GR2's/Springtech's. - 231k and traded it in. - Gone
    2000 GTP: XP, P&P'd Heads, N*\Lq4 MAF, GenV, 42#'s, PRJ Rails\FPR, Racetronix, TEP w/ 3.29 Gears, 300m, 7/8" chain, SSAC's. - Collecting dust in my garage.
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  3. #3 Re: 97 gtp chugging issues and backfires 
    Bluemagic
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    Default 11-20-2015
    Chugs at low rpms. Car gas had an constant misfire since the tune up a few months ago. Cylinder three wire had got damaged while resting on the plog. He replaced it with a wire from the Junkyard Lmao. Gonna swap plug with different cylinder tommorow

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  4. #4 Re: 97 gtp chugging issues and backfires 
    rynoman03
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    Default 11-20-2015
    Plugs can be bad. Replace it. Plugs are cheap. And replace the wire with a new one.

    Sent from my SCH-I545 using Tapatalk
    1999 GTPHP Tuned, Ported SC/TB, 42#'s, SSAC's, ZZP Modded 1.9's/LS6 Springs/Manley's, TransGo Shift Kit, Poly Uppers, KYB GR2's/Springtech's. - 231k and traded it in. - Gone
    2000 GTP: XP, P&P'd Heads, N*\Lq4 MAF, GenV, 42#'s, PRJ Rails\FPR, Racetronix, TEP w/ 3.29 Gears, 300m, 7/8" chain, SSAC's. - Collecting dust in my garage.
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  5. #5 Re: 97 gtp chugging issues and backfires 
    Bluemagic
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    Default 11-20-2015
    Thanks I'll update tommorow

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  6. #6 Re: 97 gtp chugging issues and backfires 
    Bluemagic
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    Default 11-21-2015
    This idiot didn't have gas. Smh.

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  7. #7 Re: 97 gtp chugging issues and backfires 
    REDCRAPGP
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    Default 11-21-2015
    Wow lol


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  8. #8 Re: 97 gtp chugging issues and backfires 
    Bluemagic
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    Default 11-21-2015
    Yes. Three days after I asked him did he have gas. Smh

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  9. #9 Re: 97 gtp chugging issues and backfires 
    Scottydoggs
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    Default 11-21-2015
    lol yeah gas is kinda needed for a engine to run........

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  10. #10 Re: 97 gtp chugging issues and backfires 
    idrivejunk
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    Default 11-21-2015
    lol.
    All Grand Prix, all the time. 69 Model J, 99 GT & GTP coupes. All junk, haha.
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  11. #11 Re: 97 gtp chugging issues and backfires 
    rynoman03
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    Default 11-24-2015
    Of F a duck man. Really?!?! Lol

    Sent from my SCH-I545 using Tapatalk
    1999 GTPHP Tuned, Ported SC/TB, 42#'s, SSAC's, ZZP Modded 1.9's/LS6 Springs/Manley's, TransGo Shift Kit, Poly Uppers, KYB GR2's/Springtech's. - 231k and traded it in. - Gone
    2000 GTP: XP, P&P'd Heads, N*\Lq4 MAF, GenV, 42#'s, PRJ Rails\FPR, Racetronix, TEP w/ 3.29 Gears, 300m, 7/8" chain, SSAC's. - Collecting dust in my garage.
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