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Thread: help!! all advice taken

  1. 06-11-2012, 09:07 PM #1
    ERHsn95
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    help!! all advice taken

    well guys i have an intermitant problem with my 95 gt every time i think i have a fix. it comes back in a week or less it has a crazy surge and backfire at 3000 rpms and the tac bounces every where i cant track the problem down any body have any ideas

    btw i just put new plugs and wires and msd dizzy and coil in thinking it was an ignition issue and that didnt work also i put a new egr valve on and that didnt do the trick. its definatly not a cloged cat becuz i put off road pipes on to test that. im not sure what to do next i love the car i just want it to run right.
    95GT bone stock 5.0 with ram clutch and billet steel flywheel, 8.8 with rebuilt clutches and 3.73's, sve wieht jacker lower arms, new busihings, new brake hoses, new brake lines, strange enginiering shocks and struts, 255lph fuel pump, mac stain less exhust, all undercoated with por-15 and eliminated every spec of rust from firewall to tail pipe

    now its time to crack into the motor portion of the build and try to crank out some power worth talking about
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  2. 06-11-2012, 09:11 PM #2
    Erics89GT
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    IAC maybe....if its surgeing for an idle or loose vacuum.....i know your pain im going thru something similar with my 91
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    1991 LX 5.0 5speed- lowered, mach1 wheels, trickflow intake, boss inc style pro cowl hood, 3.73s
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  3. 06-11-2012, 09:34 PM #3
    AutomagicSN98
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    Does it only happen at 3k rpms? Aftermarket CAI?
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  4. 06-11-2012, 09:45 PM #4
    jaa55
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    change the ignition module yet?

    It cant be the IAC it only controls idle if its happening at 3k.....when you say the tach bounces is it realistic, like the engine is just losing RPM or is it erratic?
    Last edited by jaa55; 06-11-2012 at 09:49 PM.
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  5. 06-11-2012, 09:50 PM #5
    SK@StreetLethal
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    Quote Originally Posted by jaa55 View Post
    change the ignition module yet?

    It cant be the IAC it only controls idle if its happening at 3k.....when you say the tach bounces is it realistic, like the engine is just losing RPM or is it erratic?
    Second that tfi problems are a pain. If not check the harness connections for corrosion.
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  6. 06-11-2012, 10:05 PM #6
    John4cam
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    bad ground?
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  7. 06-12-2012, 08:36 AM #7
    wick
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    Tach bouncing is PIP signal. Msd distributers are known for their issues in those cars. Pit a stocker back in and start from there. Tfi also. Try the EXACT one for your car. Also, as John said...ground.
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  8. 06-12-2012, 11:31 PM #8
    ERHsn95
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    Thanks for the replies guys and well its eratic and only happens at three grad or above i havent checked the ground yet but i have been having other spuratic electrical glitches but i was more worried about this issue and was putting checking them out till later but maybe its all part of it i feel stupid asking but wat is the tfi everyone keeps talking about
    95GT bone stock 5.0 with ram clutch and billet steel flywheel, 8.8 with rebuilt clutches and 3.73's, sve wieht jacker lower arms, new busihings, new brake hoses, new brake lines, strange enginiering shocks and struts, 255lph fuel pump, mac stain less exhust, all undercoated with por-15 and eliminated every spec of rust from firewall to tail pipe

    now its time to crack into the motor portion of the build and try to crank out some power worth talking about
    Reply With Quote Reply With Quote
  9. 06-13-2012, 07:59 AM #9
    jaa55
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    its the ignition module. it was on the distributors in the older 5.0s....yours is remote mounted and looked like this....

    03 Torch Red Anni. Ed. Cobra

    11 Grabber Blue 5.0, 3D500 spoiler, CS valance, GT premium, interior upgrade package, Brembos, MT-82 and Whipple powered SOLD

    01 cobra: traded

    93 LX Modular 4v swap
    Sean Hyland Motorsport forged rotating assembly, Teksid block, 01 cobra heads, cams and intake SOLD
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