Thread: grand prix gtp intake leak/ x-mas lights across dash nightmare!

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  1. #1 grand prix gtp intake leak/ x-mas lights across dash nightmare! 
    SE Level Member dbrown68's Avatar
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    I'm fishin for some input on this common 3.8 leaking intake/ pontiac issue..lets see..where to start..
    it all started with a catalyst code a couple years back, and my darling wife like most chose to ignore the problem so long as the wheels rolled under its own power..then this is when the gtp decides to side with me..so then we get bombarded with multiple warning indicators abs,TC,SS,steering etc, so I was google bound...did frnt hubs, and nothing, then brakes, nothing, then it started running rough and seems like the accellerator pedal gets harder to push, i did the intake, nothing, now it's shifting sluggish, I checked a few other things, egr,vac and fuel, batt,.....as if this wasn't enough, we also have an 01 firebird....guess what it's doin?
    well any suggestions?
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  2. #2 Re: grand prix gtp intake leak/ x-mas lights across dash nightmare! 
    Killa Bee Scottydoggs's Avatar
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    scan the car and post the codes you have now.

    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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  3. #3 Re: grand prix gtp intake leak/ x-mas lights across dash nightmare! 
    SE Level Member dbrown68's Avatar
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    K the saga continues, egr checked out awhile back but earlier someone suggested that I try running it without it plugged in, and WOW..it was real close to running like it used to, but it was still shifting sluggish, then after awhile naturally the engine light is back, scanner showed three codes all related to the egr.pugged it back in, light goes out, no more codes, but runs like crap again!
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  4. #4 Re: grand prix gtp intake leak/ x-mas lights across dash nightmare! 
    Moderator dsmuts's Avatar
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    Pull the egr off and clean it. Clean the tb and sensors too while you're at it
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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