Code 51 - Page 2

Jay633 · 02-24-2012, 07:37 PM

I have a question on this too. I have the original sensor and the car has 186xxx milea on chassis so most likely i should replace it? I checked the ohms and i was getting 1500-1600 i couldnt get it anywhere near 1 or OL

pandrade · 02-24-2012, 08:48 PM

i just changed the origonal one which is at 135k miles and it was crap. the spring dident really have much force it wasent performing properly, yours being more miladge is probably worse off. I would replace it, for 70$ its not a bad investment

cre · 02-24-2012, 11:52 PM

The thing with the TPS is that it's a potentiometer with resistance material laid down on a wafer in a steadily increasing density. A bad TPS may read fine as far as the resistance measure at the top and bottom but as the material wears down it wears down in between those extremes the most. The most effective way to measure it is to bench test it and test that the voltage output at pin VTA is linear and consistent from .48v to ~4.85v.

The TPS like the N/A's VAFM is a wear component which sees a lot of action. Replacing it every 75,000 to 100,000 miles is not excessive... if you don't want to, or are unable to, test it thoroughly.

02-24-2012, 11:52 PM	#13
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The thing with the TPS is that it's a potentiometer with resistance material laid down on a wafer in a steadily increasing density. A bad TPS may read fine as far as the resistance measure at the top and bottom but as the material wears down it wears down in between those extremes the most. The most effective way to measure it is to bench test it and test that the voltage output at pin VTA is linear and consistent from .48v to ~4.85v. The TPS like the N/A's VAFM is a wear component which sees a lot of action. Replacing it every 75,000 to 100,000 miles is not excessive... if you don't want to, or are unable to, test it thoroughly. __________________ 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 --->

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How to check diagnostic codes	suprra_girl	MKIII FAQ	10	12-27-2011 08:30 PM
TPS code 41...	Cyberguy1992	MKIII Supra	0	04-26-2011 08:14 PM
Damn code 51/31	Supra Saiyan	MKIII Supra	10	02-15-2011 10:57 AM
KS code, and no KS connector?	Scionguy	MKIII Supra	5	08-28-2008 08:15 PM
getting wierd error code and need general advice please	noredline	MKIII Supra	7	10-01-2006 05:23 AM

02-24-2012, 07:37 PM	#11
Jay633 3" Exhaust Join Date: Mar 2010 Location: Oxnard Posts: 109	I have a question on this too. I have the original sensor and the car has 186xxx milea on chassis so most likely i should replace it? I checked the ohms and i was getting 1500-1600 i couldnt get it anywhere near 1 or OL

02-24-2012, 08:48 PM	#12
pandrade 12psi boost Join Date: Mar 2011 Location: fort myers florida Posts: 345	i just changed the origonal one which is at 135k miles and it was crap. the spring dident really have much force it wasent performing properly, yours being more miladge is probably worse off. I would replace it, for 70$ its not a bad investment