#23132 - 02/20/09 01:18 PM
Re: Help!!! Blinking Engine Light and Stuttering
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Registered: 04/08/08
Posts: 2647
Loc: Iowa City, IA
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checked for a clogged cat?
checked fuel pressure?
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'99 GTP, L36 bottom, XP cam, Headers, 3.29 gears, FWI, Powrtuner
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#23133 - 02/20/09 02:04 PM
Re: Help!!! Blinking Engine Light and Stuttering
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Junior Member
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Registered: 02/11/09
Posts: 20
Loc: Windsor Ontario
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How do I check the cat ? and easiest way to check fuel pressure?
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#23134 - 02/20/09 02:24 PM
Re: Help!!! Blinking Engine Light and Stuttering
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Registered: 12/15/05
Posts: 5286
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catalytic convertor maybe? Wait for others to chime in here.
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 WizAire CAI w/9" K&N & HV3, 2.5" d/p w/h/f cat, Cobra CB, PowerSlot slots w/Hawk HPS, GR-2s, GMPP handling kit, NextLevel STBs, Pilot Sport A/S Plus tires. 98 L36/MM5 RaC
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#23135 - 02/20/09 07:50 PM
Re: Help!!! Blinking Engine Light and Stuttering
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Registered: 04/18/05
Posts: 8901
Loc: Bradenton, FL
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If it can't go past 4k, I'm betting on the cat being bad.
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Corey Smith 
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#23136 - 02/20/09 09:46 PM
Re: Help!!! Blinking Engine Light and Stuttering
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Junior Member
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Registered: 02/11/09
Posts: 20
Loc: Windsor Ontario
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how much are the cats ? like seriously im already up over 300 in parts cuz i had to flush the tranny too, and also do the gt's have trans coolers, if not id like to put one on so any suggestions on a good one ?
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#23137 - 02/20/09 09:56 PM
Re: Help!!! Blinking Engine Light and Stuttering
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Registered: 04/18/05
Posts: 8901
Loc: Bradenton, FL
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Good job on flushing the tranny. Enjoy it while it lasts, now.
Cats can be had for pretty cheap on summit or ebay.
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Corey Smith
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#23138 - 02/21/09 11:03 AM
Re: Help!!! Blinking Engine Light and Stuttering
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Registered: 12/15/05
Posts: 5286
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IIRC, 150 USD for hi-flo cat Magnaflow or so, with 2.5" D/P.
No, GTs do not have tranny coolers. I would recommend M998 coolers, they cool off the HMMWV trannies quite well.
_________________________
WizAire CAI w/9" K&N & HV3, 2.5" d/p w/h/f cat, Cobra CB, PowerSlot slots w/Hawk HPS, GR-2s, GMPP handling kit, NextLevel STBs, Pilot Sport A/S Plus tires. 98 L36/MM5 RaC
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#23139 - 02/21/09 03:05 PM
Re: Help!!! Blinking Engine Light and Stuttering
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Junior Member
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Registered: 02/11/09
Posts: 20
Loc: Windsor Ontario
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Originally posted by ordonez1307:
Good job on flushing the tranny. Enjoy it while it lasts, now.
Cats can be had for pretty cheap on summit or ebay. what do you mean enjoy it while it lasts ?
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#23140 - 02/21/09 06:06 PM
Re: Help!!! Blinking Engine Light and Stuttering
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Registered: 12/15/05
Posts: 5286
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depending on how many miles are on your tranny by the time that you flushed it, you may have made damage that much more noticeable by getting rid of metal pieces that made tolerances tight. It's not uncommon for high-mileage trannies to start slipping a little while after a flush, and soon after needing rebuild/replacement.
I had a flush done several times to no ill end. You might be just fine, you might be giving Ed or ZZP a call here before too long, never can tell for sure.
_________________________
WizAire CAI w/9" K&N & HV3, 2.5" d/p w/h/f cat, Cobra CB, PowerSlot slots w/Hawk HPS, GR-2s, GMPP handling kit, NextLevel STBs, Pilot Sport A/S Plus tires. 98 L36/MM5 RaC
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#23142 - 02/22/09 11:39 AM
Re: Help!!! Blinking Engine Light and Stuttering
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Junior Member
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Registered: 02/11/09
Posts: 20
Loc: Windsor Ontario
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i doubt that its that bad, it has 90000km (55,000mi) on it
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#23143 - 02/22/09 12:11 PM
Re: Help!!! Blinking Engine Light and Stuttering
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Registered: 04/18/05
Posts: 8901
Loc: Bradenton, FL
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Originally posted by windsorgpgt03:
i doubt that its that bad, it has 90000km (55,000mi) on it It just helps to do your research a bit before you do something like that. If I bought a car brand new, I might get the tranny flushed regularly, but if I had over 50,000 miles on it, there is no way I would be flushing it.
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Corey Smith
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#23144 - 02/22/09 03:59 PM
Re: Help!!! Blinking Engine Light and Stuttering
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Junior Member
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Registered: 02/11/09
Posts: 20
Loc: Windsor Ontario
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k quick update, did a little searchin around on the car, and if shes sitting in neutral and i give it 1/2 throttle, itll go to 4000 no problem, but if i put it to the floor it bogs out, and cant get past 3500 any ideas, or are we still looking at the cat?
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#23145 - 02/22/09 04:27 PM
Re: Help!!! Blinking Engine Light and Stuttering
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Member
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Registered: 04/08/08
Posts: 2647
Loc: Iowa City, IA
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park/neutral is a different animal, rev limiter cuts off fuel at 4000 rpm, so you may be bouncing off that in neutral.
_________________________
'99 GTP, L36 bottom, XP cam, Headers, 3.29 gears, FWI, Powrtuner
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#23146 - 02/22/09 08:27 PM
Re: Help!!! Blinking Engine Light and Stuttering
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Member
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Registered: 12/15/05
Posts: 5286
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yeah, that's neutral/park rev limiter. If it did that in drive, I would say cat for certain.
_________________________
WizAire CAI w/9" K&N & HV3, 2.5" d/p w/h/f cat, Cobra CB, PowerSlot slots w/Hawk HPS, GR-2s, GMPP handling kit, NextLevel STBs, Pilot Sport A/S Plus tires. 98 L36/MM5 RaC
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