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$400 gtp build

H

heavyRfoot

New member
well i picked up this baby for $400 because of a BAD missfire and it stalled when you turned on the signal

so i fixed the stalling problem by cleaning the ignition switch, and hopefully i will fix the miss with a new set of delco plugs and wires, i pulled out a plug and it was pretty nasty (car was driven without the supercharger belt for several months)

the car came with brand new tires, it has leather, HUD, CD, and about 317kms.

so like i said, im doing a tune up tomorrow, then next week it will go to GM so they can change the valve cover gaskets under the recall, i will also buy 2 bottles of supercharger oil and change that.

i got a question about my idle, once the car is warm and i am at a stop light the RPMs are at about 1200, and if i put it in neutral they go up to near 2000, what would cause this? i was thinking i should clean the idle air control and the throttle body

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i will get better pics tomorrow
 


i was told i cant because it would strip the coating off of the supercharger, is there a safe vacume line i can use?
 
Looks like not a bad deal. Did you check on the rocker panels and rear strut towers to see how they're holding up? You may need to do some new gaskets on the top end of the engine if it's never been done (LIM, UIM, fuel injector O ring, and valve cover gaskets). Let us know how it goes.
 
i am buying new rockers in the spring and installing them, strut towers are solid, GM is doing the valve covers under the recall and i dont know what LIM or UIM is lol.
 
Nice deal, I am kinda jealous :D. Anyways LIM is the Lower Intake Manifold. You will need to get those done, if it hasn't been done. I didn't even know mines were bad until I had a mechanic look at them. You dont have UIM (Upper Intake Manifold) because of the supercharger (if I'm wrong someone correct me lol).
 


FlaminWhite97GTP said:
Nice deal, I am kinda jealous :D. Anyways LIM is the Lower Intake Manifold. You will need to get those done, if it hasn't been done. I didn't even know mines were bad until I had a mechanic look at them. You dont have UIM (Upper Intake Manifold) because of the supercharger (if I'm wrong someone correct me lol).
Click to expand...

yes and no lol the supercharger is the upper intake manifold... but there is still a gasket we just call it a supercharger gasket instead of an UIM gasket...
 
its a 1998, 317kms,

after the tuneup it runs SO much better, idles a little high because a vacume line is broken (thin hard plastic one), going to fix it tomorrow.

im sure when i take it to GM they will tell me all the problems.

sorry i couldn't get pics, i didnt have any time once i was finished the plugs i had to go to work and now its dark again

i dont know why people say its so hard to do the tune up, im only 17 and me and my buddy got it done in 2 hours, ( we had pizza in that time to)
 


when i did my own valve cover gaskets i snapped almsot every plastic vac line in my engine bay lol. i went to autozone and got 10 foot of the 5/16" i belive and reran everything. was extremly easy. just a tip if you want to do it.
 
i will let GM fix what they brake lol

but ya those plastic vac lines are garbage, but i work at partsource so getting all the connectors and stuff is not a problem, i also need to get a vac T joint (dont know what its called)
 
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It's typical dry rot...so...its got 200K on it? get rid of the U-Bend though...and flip the motor mounts...make things a little easier on the main lower engine/tranny mounts and get better performance/mpg's/less KR with the U-Bend gone.
 
ya that would be just under 200k,

im going to co-op at midas again this year so i will be able to make a u-bent delete properly with all of the right tools, (starting there within the next 2 weeks)
 
man, you got the hookup for that new (to you...haha) GTP. i am still currently jealous. ur gonna have a sweet ride if you keep putting effort into her! good luck!
 


i am confused, my car is hard to start when the radio is on, when i turn it on is starts up right away, what would cause this?
 
Might be coilbrackets, Sparkplug wires or the sparkplugs or a Bad battery, Starter, Alternator


as general maintance i would recommend spending about 240$ for the nice preformance MSD coils & wires and getting Bosche 4+ Platinum sparkplugs

And get a Cold Air intake once you get it running right.

then its beastly and ready for other stuff :)
 
i dont like the bosh 4+ they fowl up to fast, i just did a cheep tune up with delco stuff for now

i will be making a fender well intake once the weather warms up
 
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