Idle problem

JStoked

New Member
Jun 27, 2010
646
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Edmond, Oklahoma, United States
Ok starts and does fine around 1000 it's cold. Wants it's warm it will jump around check light comes on till I give it some gas. But idiel is up then down till it dies. Upgrades are 550 injectors , lex maf,walboro255, and neo. Any help would be appreciated.
 

IJ.

Grumpy Old Man
Mar 30, 2005
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I come from a land down under
grammar-book.jpg
;)
 

ForcedTorque

Join the 92 Owners Group
Jul 11, 2005
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Satsuma, Alabama, United States
C'mon guys........it's a car forum! Everyone here is not an English scholar. No need to trash a guy for trying to get help.

Wants = Once
One = On

I'm not sure what your problem is, but the raising/lowering of your idle is due to fuel cut once the idle nears 1700RPM. I had the same problems with the same mods. I checked all vacuum lines, changed my idle speed control valve(ISCV), Throttle Position Sensor (TPS), and now I'm changing the gaskets for my intake manifold and intake plenum. I'm hoping when I get all of the stock parts back in place, I will have things sorted out.
 

IJ.

Grumpy Old Man
Mar 30, 2005
38,728
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ForcedTorque;1653536 said:
C'mon guys........it's a car forum! Everyone here is not an English scholar. No need to trash a guy for trying to get help.

Wants = Once
One = On

I'm not sure what your problem is, but the raising/lowering of your idle is due to fuel cut once the idle nears 1700RPM. I had the same problems with the same mods. I checked all vacuum lines, changed my idle speed control valve(ISCV), Throttle Position Sensor (TPS), and now I'm changing the gaskets for my intake manifold and intake plenum. I'm hoping when I get all of the stock parts back in place, I will have things sorted out.

Wasn't "trashing" anyone Stork knows I was only playing :D
 

Deathseeker31

Getaway Driver
Mar 30, 2005
96
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SOCAL
Code 13 is RPM signal per the TSRM, it would be dealing with your CPS signal. Check the wires around the CPS to make sure they are not loose or brittle and need replacement.
Code 52 is a knock sensor code. This code normally means the wiring for the knock sensors is bad. I am not sure if "shaeff" still sells a kit for the rewire. I would do some research or ask him, he's on the forums. I would also do a search titled "knock sensor re-wire Instructions" and you can get a lot of information. Hopefully this helps out.

http://cygnusx1.net/Supra/TechTips/engine_error_codes.aspx
 

JStoked

New Member
Jun 27, 2010
646
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Edmond, Oklahoma, United States
Ya but we have rewired the knock sensor because the idiot I got the car for cut the harness mabe we did it wrong. And sry it was codes 31 and 52 had to look at the trsm to remimber what they were. We have check codes several times and have got it from throwing up 5 codes to down to throwing up those 2 now.

---------- Post added at 08:46 PM ---------- Previous post was at 08:44 PM ----------

Code 31 and 51 sry it's been a long day.