95 pick-up tps problem

dejast · 10-23-2009, 11:35 AM

I have a 95 pick-up w/v6 engine and i have a problem w/tps sensor, replaced sensor twice,first w/store part, then nissan part. still not working right, my 5 volt ref. is good and grounds are good, but when i prob signal wire i get no voltage on sweep test, makes no sense to me. any help would be appreciated, because i hate to go to dealer.

bradrhale · 10-23-2009, 11:37 AM

is the connection at the TPS good and uncorroded??

dejast · 10-23-2009, 11:40 AM

yes connections are good and clean

bradrhale · 10-23-2009, 11:46 AM

have you cleaned any carbon buildup or debris out the port in the side of the TB for the TPS?? is your TPS adjustable like some other makes are?? chevy has some that are not but also have ones with eccentric holes so that the TPS can be adjusted.

dejast · 10-23-2009, 11:50 AM

yes everything is spotless, this all started w/ knock sensor code w/ tps code so i removed manifold replaced knock sensor then had every thing cleaned including intake and throttle body and egr pipes, replaced tps. truck runs fine except for check engine light for tps.

bradrhale · 10-23-2009, 11:55 AM

did you clear the codes for the TPS after replacement?? the ECM does have to relearn the new values from the new TPS. when you say that you truck runs good, are you stating that it seems like there is no problem?? measuring values for the TPS can be hard without a good meter. i believe some ones that i have tested had to be more than 0.2 volts and less than 0.4 volts at closed throttle.
if not sure, faulty TPS will cause late shifts and high idle. when i mean late shifts, i mean way late shifting almost like it wont shift. if not doing any of this, i would clear it again and drive it.

dejast · 10-23-2009, 11:58 AM

i have a very good scanner, and a fluke meter, code was cleared and resets in 5 minute test drive. what puzzles me is no voltage sweep from sensor and truck is a manual trans

bradrhale · 10-23-2009, 12:02 PM

you are making this a little more difficult but thanks for the info as not alot of people do any diagnosing first. may have to think about this a little. which wires are you testing out to get your voltage?? and what is your reading at closed voltage??

dejast · 10-23-2009, 01:19 PM

Quote:

Originally Posted by bradrhale

you are making this a little more difficult but thanks for the info as not alot of people do any diagnosing first. may have to think about this a little. which wires are you testing out to get your voltage?? and what is your reading at closed voltage??

there are three wires for tps red 5 volt ref, white signal wire to ecm, and black ground.black and red are good but i get no signal on white signal wire when i sweep the throttle closed throttle voltage is nil.

10-23-2009, 11:35 AM	#1
dejast Junior Member Join Date: Oct 2009 Posts: 6	95 pick-up tps problem I have a 95 pick-up w/v6 engine and i have a problem w/tps sensor, replaced sensor twice,first w/store part, then nissan part. still not working right, my 5 volt ref. is good and grounds are good, but when i prob signal wire i get no voltage on sweep test, makes no sense to me. any help would be appreciated, because i hate to go to dealer.

10-23-2009, 11:40 AM	#3
dejast Junior Member Join Date: Oct 2009 Posts: 6	tps problem yes connections are good and clean

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
GMC 2000 Sierra Pick-up Parking Brake Problem	GMCGriffin	GMC Truck Forum	1	06-23-2008 09:56 PM
Pick your pet wisely...	crabtruck	Off-Topic	5	03-30-2008 02:45 AM
1995 pick up	tcbandit	Nissan Truck Forum	2	05-30-2007 01:39 PM
lifting my toyota pick up, big problem wrong info published.	2fast4u	Toyota Truck Forum	8	01-08-2006 09:47 AM
Pick me up with your Pick-Up (Sun Star)	trucknews	Truck News (headlines)	0	12-05-2004 09:30 PM

10-23-2009, 11:37 AM	#2
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	is the connection at the TPS good and uncorroded??

10-23-2009, 11:46 AM	#4
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	have you cleaned any carbon buildup or debris out the port in the side of the TB for the TPS?? is your TPS adjustable like some other makes are?? chevy has some that are not but also have ones with eccentric holes so that the TPS can be adjusted.

10-23-2009, 11:50 AM	#5
dejast Junior Member Join Date: Oct 2009 Posts: 6	yes everything is spotless, this all started w/ knock sensor code w/ tps code so i removed manifold replaced knock sensor then had every thing cleaned including intake and throttle body and egr pipes, replaced tps. truck runs fine except for check engine light for tps.

10-23-2009, 11:55 AM	#6
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	did you clear the codes for the TPS after replacement?? the ECM does have to relearn the new values from the new TPS. when you say that you truck runs good, are you stating that it seems like there is no problem?? measuring values for the TPS can be hard without a good meter. i believe some ones that i have tested had to be more than 0.2 volts and less than 0.4 volts at closed throttle. if not sure, faulty TPS will cause late shifts and high idle. when i mean late shifts, i mean way late shifting almost like it wont shift. if not doing any of this, i would clear it again and drive it.

10-23-2009, 11:58 AM	#7
dejast Junior Member Join Date: Oct 2009 Posts: 6	i have a very good scanner, and a fluke meter, code was cleared and resets in 5 minute test drive. what puzzles me is no voltage sweep from sensor and truck is a manual trans

10-23-2009, 12:02 PM	#8
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	you are making this a little more difficult but thanks for the info as not alot of people do any diagnosing first. may have to think about this a little. which wires are you testing out to get your voltage?? and what is your reading at closed voltage??