having problems with my 88 supra idle

[mk3bandit]

Well last week while driving i noticed it was revving a little bit higher then normal. When i came to a stop and put it in park, it started to rev from 1,000 to 2,000rpm. I was thinking its the TPS or ISC. So i pulled the codes and i got 24, 34, 42, 51. When i unplugged the TPS it stayed at 1,800 and didn't rev and down until i plugged it back in. Im not sure where to start to check. And where is the "air intake temperature sensor" located?

i would appreciate any help.

 

[mk3bandit]

And i almost forgot. It sounds like its sucking in more air then normal at idle. You use to not hear it as much, now its louder.

 

[jetjock]

Clear the codes and see what comes back. It's likely the 51 will. If it does you'll have to check the TPS. See the TRSM for details. If you don't have one ask member JStoked to look in his...

 

[boostcraver]

If disconnecting the TPS makes a difference in the idle, it would seem logical to start there. My '91 had a similar issue on first start up after the rebuild. TPS was out of alignment relative to the throttle plate. I used my multi-meter and the voltages outlined in the TSRM to recalibrate it and it idles perfect. Before making adjustments,1.) check that the set screws are both tight. If they are loose, there's a good chance you will find it out of spec. and, 2.) make a match mark to put it back in place if the adjustment makes it worse instead of better. Good luck!

 

[mk3bandit]

ok ill have to try that tomorrow. i appreciate it again for your help.

 

[JStoked]

Clear the codes and see what comes back. It's likely the 51 will. If it does you'll have to check the TPS. See the TRSM for details. If you don't have one ask member JStoked to look in his...

your a dick plain out ill go get 1 so you willl shut your fuckin mouth ass!!!!!

 

[CajunKenny]

^Yowsa!

 

[jetjock]

He's predictable, I'll give him that

 

[mk3bandit]

so i pulled the fuse to clear the codes, then drove down the street. its still pulling the same codes. i also tried to adjust the TPS to see if that would fix it. still nothing. any other ideas?

 

[JStoked]

you dont need the trsm. google code 51 on your supra there are alot of things it could be. make sure your ac is on when you test it.

---------- Post added at 10:20 PM ---------- Previous post was at 10:12 PM ----------

Clear the codes and see what comes back. It's likely the 51 will. If it does you'll have to check the TPS. See the TRSM for details. If you don't have one ask member JStoked to look in his...

and to you the dealers around here want 200 for one so you tell me where i can get it cheaper than 70?

 

[CajunKenny]

you dont need the trsm. google code 51 on your supra there are alot of things it could be. make sure your ac is on when you test it.

Are you sure about this...?

Remember. You're in the Tech Section which is where mis-information is less than tolerable.

Put your flame suit on!

 

[Pandaplastic]

http://www.supramania.com/forums/showthread.php?124796

Viola!