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 Post subject: thinking about picking up an 82 supra.
PostPosted: Mon Feb 23, 2015 12:57 pm 

Joined: Fri Feb 22, 2013 9:21 pm
Posts: 24
Location: Auburn,WA
Hi, I'm new to the toyota section here. I'm going to look at an 82 celica supra on saturday. The biggest problem is that the car idles at 1800-2000 rpm always. Is this most likely the tps? And if so, how much do they run on average. This will be my first toyota, as I've pretty much always had camaros. Any info on what to look for on the car would be greatly appreciated.

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 Post subject: Re: thinking about picking up an 82 supra.
PostPosted: Mon Feb 23, 2015 2:39 pm 

Joined: Fri Feb 22, 2013 9:21 pm
Posts: 24
Location: Auburn,WA
Also, a little more info on the car. 82 supra 5mge 5 speed, coils, header, intake. Stock besides that. 230K on chassis, unknown miles on rebuilt engine. if i can easily fix the idle before my 50 mile trip home with it, that would be awesome.

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 Post subject: Re: thinking about picking up an 82 supra.
PostPosted: Tue Feb 24, 2015 7:36 am 
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Joined: Mon Jul 19, 2010 12:52 am
Posts: 8
Location: Waterloo, Sydney, Australia
You'll be able to get a working TPS somewhere online or a junk yard / spare parts shop. Might be able to fiddle the AFM and make it run better on the revs too.

If thats all that it has, you'll love the car once its fixed. The 5-speeds are known to be great usually, im sure you'll find a lot to like about the Supra.

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 Post subject: Re: thinking about picking up an 82 supra.
PostPosted: Tue Feb 24, 2015 9:57 am 
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Joined: Wed Mar 21, 2007 11:47 am
Posts: 476
Location: Pac NW
high idle isn't always just a TPS adjustment. Here is the factory service manual for a MkII Supra - http://www.cygnusx1.net/Supra/Library/TSRM/MK2/ - only problem is it is for 1986... but it is far more accurate then nothing.
page 60 is idle control... check to see if the 1982 has the same, or similar idle control

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 Post subject: Re: thinking about picking up an 82 supra.
PostPosted: Tue Feb 24, 2015 7:33 pm 
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Joined: Sat Feb 05, 2011 5:53 pm
Posts: 431
Location: Bay Area, California
Try tapping on the idle speed control valve with a wrench. If the idle changes when you do, that's your problem. If the idle doesn't change, doesn't mean the ISCV isn't your problem.

Check timing first.

Could be an air leak.

TPS needs to be set with a multimeter. I had problems with mine, tried several used ones. Never got the adjustment right, until I shelled out for a NEW one. Easy to adjust when they aren't all worn out. New TPS around $100

If the car drives like crap, then likely the TPS. If the car drives fine despite the high idle, then not your TPS.

Look over things, make sure nothing silly is causing the problem like the throttle binding up or the throttle plate adjustment screw is way out

Very cool cars, good luck. Let us know how it goes


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 Post subject: Re: thinking about picking up an 82 supra.
PostPosted: Tue Feb 24, 2015 7:57 pm 

Joined: Fri Feb 22, 2013 9:21 pm
Posts: 24
Location: Auburn,WA
Thanks guys. I actually found out the 82 has an idle adjustment screw, so i should be able to at least get it manageable for the drive home. And thanks matches, the info about it driving fine vs. Driving poorly being the tps or not. That should really help me.

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