7mge tps

Sonyps307 · 12-23-2010, 12:05 AM

Can a bad or if the tps in out of calibration mess up the timing

Sonyps307 · 12-23-2010, 12:41 AM

I also get code 51

cre · 12-23-2010, 02:17 AM

Code 51 (when caused by the TPS) is specific to the IDL switch inside the unit. This switch tells the ECU when the throttle is closed so it knows better how to operate the IAC (Idle Air Control) valve. If the IDL switch is not closing when the throttle is the ECU will just pump the IAC to keep the engine running.... so your idle will be inconsistent. You cannot set timing in this situation... you must have no codes (not entirely true, but a good practice), the engine must be up to normal operating temp and the diagnostic jumper must be in place. Do know that a code 51 will also present if you press the gas while in diag mode or turn on the A/C.

What's wrong with the timing?

Sonyps307 · 12-23-2010, 03:39 AM

Well the car is low on power so I timed it. it was reading Belong 0 so I retimed it to 10 with the jumper took it around the block and it ran better intill the engine light came on then I checked codes again got 51 and 52. So then I timed it again now it's moving on the 15 and alittle above 15. The motor was just rebuild and I also had them glass beed the throttle body and intake so I sure they took off the tps during this and now it's off mess up I think

cre · 12-23-2010, 04:35 AM

You see people.... it would be MUCH easier if you'd include the whole story from the beginning.

A code 51 isn't going to cause any significant power loss.... Your code 52 on the other hand is a biggie.

12-23-2010, 12:05 AM	#1
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	7mge tps Can a bad or if the tps in out of calibration mess up the timing

12-23-2010, 02:17 AM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Code 51 (when caused by the TPS) is specific to the IDL switch inside the unit. This switch tells the ECU when the throttle is closed so it knows better how to operate the IAC (Idle Air Control) valve. If the IDL switch is not closing when the throttle is the ECU will just pump the IAC to keep the engine running.... so your idle will be inconsistent. You cannot set timing in this situation... you must have no codes (not entirely true, but a good practice), the engine must be up to normal operating temp and the diagnostic jumper must be in place. Do know that a code 51 will also present if you press the gas while in diag mode or turn on the A/C. What's wrong with the timing? __________________ 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 --->

12-23-2010, 04:35 AM	#5
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	You see people.... it would be MUCH easier if you'd include the whole story from the beginning. A code 51 isn't going to cause any significant power loss.... Your code 52 on the other hand is a biggie. __________________ 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 --->

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12-23-2010, 12:41 AM	#2
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	I also get code 51

12-23-2010, 03:39 AM	#4
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	Well the car is low on power so I timed it. it was reading Belong 0 so I retimed it to 10 with the jumper took it around the block and it ran better intill the engine light came on then I checked codes again got 51 and 52. So then I timed it again now it's moving on the 15 and alittle above 15. The motor was just rebuild and I also had them glass beed the throttle body and intake so I sure they took off the tps during this and now it's off mess up I think