Might be buying a 89 supra...Have questions first

boosted · 07-07-2010, 06:32 PM

Ok thanks Ijust want to make sure because i have seen supras with a 1jz swap go for alot of cash and 3,500 seems cheap I will check up on it more
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batmmannn · 07-07-2010, 06:51 PM

You might be right but an engine swap that has mechanical problems from the get go is not something you want unless you know the extent of the problems and can fix it yourself. There are real great knowing guys here, hold off on a decision till they chime in for you. You might want to list all the mods done to the car so a better appraisal of what you should be paying can be obtained.

907mge · 07-07-2010, 10:06 PM

From experience when someone claims it is only a small problem, it may be something much more indeepth. The question is of why he did not fix it already since it should not be a big deal at least not on a 7m but don't know about a 1jz.

cre · 07-08-2010, 12:36 AM

The TPS is only a trim sensor. It has a switch inside to indicate to the ECU that the engine is at idle, so without it idle may be rough, but the car should drive just fine for the most part. Saying the car is driving like complete crap due to a TPS is bullshit.... also, they're VERY easy to set... I mean VERY EASY. The ECU has safeguards against running with a sensor that's too far out of range, too far and it ignores it. Unplug it and take the car for a drive, if it drives fine (but idles poorly) then it's the TPS, if not the problem lies elsewhere.

boosted · 07-08-2010, 12:53 AM

Ok thanks cre well the car is in fort collins I might take a ride down and check it out...From what he says he has a s13 he is building and no time for both projects...So I will look more into it and let you guys know

boosted · 07-08-2010, 01:32 AM

I asked him about unplugging the tps and he said I've unplugged it and the idle goes way up. Then hit's fuel cut goes back down, and repeats this process.

so mods, aluminum driveshaft, Spec stage 2 clutch and flywheel (good up to 590 hp) brand new brake system, new calipers/lines/pads/rotors, stainless mesh intake filter(, new 2jzgte TPS/thermostat combo, Optima Red Top 800ccamps, hks downpipe, Custom 3" exhaust from downpipe back with high flow cat, brand new Yoko rubber on the rears, boost/oil pressure gauges,torsen differential,

Those are all the mods...Is 3500 a good price with the tps problem?

907mge · 07-08-2010, 01:53 AM

It is a project car. So use your own judgement on the quaility of the work, condition and what you want to do with it.

cre · 07-08-2010, 02:24 AM

Quote:

Originally Posted by boosted

I asked him about unplugging the tps and he said I've unplugged it and the idle goes way up. Then hit's fuel cut goes back down, and repeats this process.

so mods, aluminum driveshaft, Spec stage 2 clutch and flywheel (good up to 590 hp) brand new brake system, new calipers/lines/pads/rotors, stainless mesh intake filter(, new 2jzgte TPS/thermostat combo, Optima Red Top 800ccamps, hks downpipe, Custom 3" exhaust from downpipe back with high flow cat, brand new Yoko rubber on the rears, boost/oil pressure gauges,torsen differential,

Those are all the mods...Is 3500 a good price with the tps problem?

Ft Collins?? Is the seller a member on here by chance?

Optima = not an upgrade.
stainless mesh filter = might as well just put a sock over the turbo's inlet if this is any of the brands I've seen tested.
Torsen Diff = Search SupraMania for "grenaded diff"... these are really cool diffs, but the MKIII's torsen does not live long if you're putting down a lot of power or a lot of aggressive launching.

Other than all that, hell, if it's not worth fixing it's worth parting out.... you'd probably break even.

You and the seller apparently don't know what fuel cut is nor what the real fuel cut is. It's not hitting either kind while just sitting there.

07-07-2010, 06:51 PM	#2
batmmannn 12psi boost Join Date: May 2010 Location: West Virginia Posts: 320	Engine swap You might be right but an engine swap that has mechanical problems from the get go is not something you want unless you know the extent of the problems and can fix it yourself. There are real great knowing guys here, hold off on a decision till they chime in for you. You might want to list all the mods done to the car so a better appraisal of what you should be paying can be obtained. __________________ 1987 N/A 7MGE Left Hand Drive MK3 Red 5 Speed and Black Auto Supras My Next project is the Batmobile!

07-08-2010, 12:36 AM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The TPS is only a trim sensor. It has a switch inside to indicate to the ECU that the engine is at idle, so without it idle may be rough, but the car should drive just fine for the most part. Saying the car is driving like complete crap due to a TPS is bullshit.... also, they're VERY easy to set... I mean VERY EASY. The ECU has safeguards against running with a sensor that's too far out of range, too far and it ignores it. Unplug it and take the car for a drive, if it drives fine (but idles poorly) then it's the TPS, if not the problem lies elsewhere. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

07-08-2010, 01:32 AM	#6
boosted Stock Join Date: Jul 2010 Location: colorado Posts: 4	I asked him about unplugging the tps and he said I've unplugged it and the idle goes way up. Then hit's fuel cut goes back down, and repeats this process. so mods, aluminum driveshaft, Spec stage 2 clutch and flywheel (good up to 590 hp) brand new brake system, new calipers/lines/pads/rotors, stainless mesh intake filter(, new 2jzgte TPS/thermostat combo, Optima Red Top 800ccamps, hks downpipe, Custom 3" exhaust from downpipe back with high flow cat, brand new Yoko rubber on the rears, boost/oil pressure gauges,torsen differential, Those are all the mods...Is 3500 a good price with the tps problem? Last edited by boosted; 07-08-2010 at 01:34 AM.

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07-07-2010, 06:32 PM	#1
boosted Stock Join Date: Jul 2010 Location: colorado Posts: 4	Ok thanks Ijust want to make sure because i have seen supras with a 1jz swap go for alot of cash and 3,500 seems cheap I will check up on it more e

07-07-2010, 10:06 PM	#3
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	From experience when someone claims it is only a small problem, it may be something much more indeepth. The question is of why he did not fix it already since it should not be a big deal at least not on a 7m but don't know about a 1jz.

07-08-2010, 12:53 AM	#5
boosted Stock Join Date: Jul 2010 Location: colorado Posts: 4	Ok thanks cre well the car is in fort collins I might take a ride down and check it out...From what he says he has a s13 he is building and no time for both projects...So I will look more into it and let you guys know

07-08-2010, 01:53 AM	#7
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	It is a project car. So use your own judgement on the quaility of the work, condition and what you want to do with it.