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  1. #1
    Dark Ride's Avatar
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    Car won't start after it warms up

    Been working on the TGP and have gotten it to start up and stay running(For the most part) and once the car has warmed-up and I shut it off, if I try to start it again, it won't start. I usually have to wait 4-6 Hours, then it starts up again like nothing was wrong.

    I know I need a new X-over pipe, and that my O2 sensor is bad. (Been getting Code 45, Rich Exhaust) When it won't start its not getting any fuel, cuz it will start and run for a little bit on starting fluid. I don't have any real ideas as to what would cause this. Any ideas are appreciated.

    Thanks,
    Mitch
    -Mitch Reed
    1998 Grand Prix GTP Supercharged
    A Few Mods
    1990 Turbo Grand Prix
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    1995 Chevy Lumina
    Winter Beater, Complete with no OD mod

  2. #2
    Garrett Powered's Avatar
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    Car won't start after it warms up

    could be a dead short on one of the wires going to the starter. the fusible links need replaced and wireloomed ill bet you anything. you should just go down to the J/Y and grab a 97 GP starter and slap it in there.

  3. #3

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    Car won't start after it warms up

    Ignition module? Once they heat up they don't work. Do you shut it off or does it die?


    Nick
    <br />2001 Chevy Impala LS

  4. #4

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    Car won't start after it warms up

    Quote Originally Posted by Garrett Powered
    could be a dead short on one of the wires going to the starter. the fusible links need replaced and wireloomed ill bet you anything. you should just go down to the J/Y and grab a 97 GP starter and slap it in there.
    That is retarded. The car starts, but yet the starter is causing a problem?

    If it turns over, but wont start, it's probably a FPR problem, possible and injector. Something like the crossover wont cause non start issues, unless the o2 is totally fouled and needs replaced.

    Ryan - Binghamton, NY <br />2 &#39;89 TGP&#39;s

  5. #5
    Dark Ride's Avatar
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    Car won't start after it warms up

    It doesn't always run the best, But it does die if I put it in gear while holding the brakes, and then it won't start. But it won't start if I just shut it off too.
    If it was a FPR wouldn't it always be a problem, not just after it warmed up? I'm thinking it could be an injector, I'll pull the Intake Manifold off tommorow and get an Ohm Reading. The O2 sensor could be totally fouled, if all my injectors are good I'll try that next.
    Thanks,
    Mitch
    -Mitch Reed
    1998 Grand Prix GTP Supercharged
    A Few Mods
    1990 Turbo Grand Prix
    Project Car
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    Winter Beater, Complete with no OD mod

  6. #6
    Garrett Powered's Avatar
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    Car won't start after it warms up

    What is it with me and people named Ryan? I have been in fights with Ryans all my life Kicked one Ryan's ass in front of a croud of people in junior high, punched this kid Ryan in the face cause he ripped off my other friends walkman, full fist fight with this big cake boy named Ryan that was hella yolked(that was almost scary ). All you guys wired funny or what? I mean this is over my whole life, no joke! what gives? I almost got over the coincidence when you just further proved it. I know everyone knows here that it could be a number of things from the description of the problem, but this asshole attacks what I say?
    Oh yea there is another Ryan I know that is a big time hater who Was kind of my friend for a long time until he turned tweeker used car stereo dealer and he ended up scratching my front window all up with a diamond ring. The list goes on. the Ryan Phenomenon

  7. #7

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    Car won't start after it warms up

    give us all a break and save your lcd screen and stereo ohm/amp/wiring knowledge for a section that is devoted to it. Ryan's also know assholes when they see them. If we are talking about reliability/running issues we are not talking about fusable links from the starter. This Ryan doesn't give a shit about other Ryan's that you know, but if you start telling someone to install a gear reduction starter to "solve" a reliability issue that is obviously way beyond your realm of compreshension, please don't guide them down the retarded path. Unless they ask for it. Then, fire away. Until then, you had best read and try to understand the things that really matter.
    Ryan - Binghamton, NY <br />2 &#39;89 TGP&#39;s

  8. #8

    Car won't start after it warms up

    I say fuel pump is tired.
    Turbocharged '88 IMSA Beretta GTU. Torque included!
    <br />90 Black TGP (The restoration)

  9. #9
    Garrett Powered's Avatar
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    Car won't start after it warms up

    look ryan I have seen your lowered red tgp and it is sick all raked like that. I got no prob with what you say for a suggestion........


    .......... all you need to do is check fuel pressure at the valve on the fuel rail.

  10. #10

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    Car won't start after it warms up

    Yes, first step would be to check FP at the rail, or really just see if you can hear the FP prime when you turn the key to the on position. If you have a FP tester it should be 45 primed and - correct me if I'm wrong - what 38 at idle? Ohm the injectors next if that doesn't lead to a solution.
    Ryan - Binghamton, NY <br />2 &#39;89 TGP&#39;s

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    Car won't start after it warms up

    You say it won't start when it is warm?

    Does that mean it won't crank when you turn the key?

    or it cranks but won't fire?

    If you are running like crap and you know you have a bad cross-over...get it replaced before you try to go any further diagnosing running issues. Your 02 sensor will be toast after a short period of time running with a leaking cross-over. So replace the x-over and 02 for sure before anything else. Then you can look for bad injectors or unless you feel like pulling the plenum to ohm out your injectors. Your ECM will go nutso bonkers trying to trim and reset fuel with a bad 02 and fresh air entering the system with a cracked cross-over. Many people have thought their injectors were bad but replacing the x-over and 02 allowed the ECM to level off and had a perfect running TGP/TSTE! 8)
    Kenny K

  12. #12

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    Car won't start after it warms up

    im still feeling the iginition module theory
    <br />2001 Chevy Impala LS

  13. #13

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    Car won't start after it warms up

    Quote Originally Posted by Nick1234
    im still feeling the iginition module theory
    That's a resounding ditto from me too.

    Check for spark after you run it til it won't start. If you have spark and it's still not starting, then start chasing a fuel delivery problem.

    Fuel pumps can fail in many conditions, cold or warm, so that is a possibilty as well.

    Make sure you check spark before you check for fuel so you don't start a fire. I've seen it happen before. :shock:

    If it still wont start after these tests, replace the starter with a 97 3100 starter, and slap on a CS-130D alternator on there, and it will be good to go!
    -David
    13 GMC Terrain Denali
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  14. #14
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    Car won't start after it warms up

    I was about to say I think the module as well. But being you said it was running fine with starting fluid. I am now leaning to a fuel related issue. Check the fuel pressure at the fuel rail. 35-42 PSI is what you are looking for. I could be wrong, someone will correct me if I am. If your PSI is good, replace your fuel filter just because it probly needs it anyways. And then check your fuel injectors. You can get to 2 injectors without taking any part of the motor apart. This is how i found my bad injector. The first one is sitting right behind the oil fill cap. Carefully push in the clip and work the harness off. With a Muti-meter set on 20 ohm. See if it is reading above 12.0. Typically 12.4 to 12.5 is preferred. The other injector sits right in front of the alternator. This one can be more of a pain to get to. but it at least is a starting point. Read the OHM on it just like the other. If those test out alright, then you have to remove the upper intake plenum and test all the injectors. If 1 is bad, I suggest you replace all 6. You dont have to, it is just my recomendation. Find some injectors from a 1996 Buick Riveria non-supercharged. They are the correct flow rates for our motors, and have the newer winding design in them. I got lucky and bought a new set for 20 bucks (ebay listed wrong). You probly wont find that type of a deal anywhere. Anyways, if those diagnosing steps dont get you pointed in the right direction, come back and let us know. I am sure one of the Gurus around here can further help you...
    Brian - Carpe Diem
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    More people have died in the name of "God" than in all wars combined thruout history..
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    Car won't start after it warms up

    Well I have an issue with my TGP where it will not CRANK when it is hot under the hood. The starter is dying and needs to be replaced...but having a 5-speed keeps me from going through the hassle of fixing an intermittent problem until the motor build starts next month. That is why I am looking for a little more info about wen it happens... 8)
    Kenny K

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