#104798 - 11/03/05 05:01 PM
Re: RPM fluctuation
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Registered: 07/15/04
Posts: 3141
Loc: Chicago, IL
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No problem.
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DHP V1.0, Slotted rotors, S/S Brake Lines, Custom CAI, GMPP Handling Kit, KYB's, Jimmy C DP (U-Bend delete w/ Hi-flow cat), Flowmaster Super 40's, drilled 180° T-Stat, Alt. Rewire & Alt. Voltage Booster Combo, 605's, ZZP Motor Mounts
"The only difference between me and a madman is that I am NOT mad!" - Dali
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#104799 - 11/04/05 07:04 AM
Re: RPM fluctuation
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Registered: 05/13/05
Posts: 148
Loc: Cartersville, GA
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Hopefully it isn't a exhaut comstipation issue. Check your CAT...
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2003 GP GTP
Victory Red
Mods: Pulley Boys 3.4" pulley, JimmyC downpipe /w cat, MSD 8.5mm plug wires, Taylor plug boots(Red), NGK TR-55 IX plugs, Thasher CAI, MAP Throttle Body Spacer, MAP Exhaust heat shield, GMPP handling upgrade kit, Energy Suspension Poly bushings, 97-02 Lotek A-pillar(3 gauge), Autometer Sport-Comp guages (boost, oil pressure, transmission temp), SilverStars Halogen bulbs, Blazertech 2200 foglights, Hawk HPS pads, F-body brakes, and rebuilt tranny....
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#104801 - 12/02/05 10:09 PM
Re: RPM fluctuation
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Member
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Registered: 11/25/05
Posts: 108
Loc: Minnesota
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wow i am having this same problem! agh its so annoying. i want to take it in, but i know its gonna cost a million dollars
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 Short Ram Air Intake | Throttle Body Spacer| Throttle Body Screen Removed | ZZP PCM | 180* Thermostat| Debaged |Flipped Sway Bar | Strut Tower Stabilizer | Motor Mounts | Tr55's | Coming soon : 3" DP |
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#104802 - 12/03/05 12:04 AM
Re: RPM fluctuation
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Member
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Registered: 11/25/05
Posts: 108
Loc: Minnesota
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Im actually thinking it could be the IAC (idle air control valve). or the TPS (throttle position sensor). both are sensors located on the throttle body. I am going to clean my IAC tomorrow with carb cleaner ill let you know if that works. i might just buy a new IAC, only 25 bucks.
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Short Ram Air Intake | Throttle Body Spacer| Throttle Body Screen Removed | ZZP PCM | 180* Thermostat| Debaged |Flipped Sway Bar | Strut Tower Stabilizer | Motor Mounts | Tr55's | Coming soon : 3" DP |
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#104803 - 12/03/05 12:08 AM
Re: RPM fluctuation
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Member
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Registered: 01/28/05
Posts: 51
Loc: Milwaukee WI
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check for an vaccum leak or an upper intake leak or you could have a pully locking up or a mass air flow sensor, check for that and find out if your fuel pressure regulator is leaking.
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98 4dr gtp.porter and polished charger, 3.5 pully,msd plug wires and coils, ngk plugs, cold air int, u-bend d, dinomax 2 chanber muffs now,magna flo high flo cat, 180 t stat,
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#104804 - 12/03/05 12:12 AM
Re: RPM fluctuation
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Registered: 03/07/05
Posts: 5158
Loc: Southern KY
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ignition module! or, it could be a coil, which three of our screwed down onto the module. it would be easy to try the coils from your other GP and see if that changes anything. maybe even the whole ignition module, but i'm not sure if those are the same.
The ignition module is usually a seperate piece, and it works or it doesn't. If you're suspicious of it, autozone has a machine that can check them for free, you just have to take it off and bring it in. Coils can be checked with a voltage meter to see if they're within spec.
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'13 Mustang 3.7V6 - MT82
'00 GP SE (L67 Swap, XP, Headers, 3.25")
'98 GTP, '01 Bonne
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