How do i check and set the TPS?

avbcon12 · 08-23-2001, 02:42 PM

I was wondering how i go about checking the voltage as well as setting the voltage to the TPS? And also, what is a good voltage that i should be reading? What should i set it to?
thanks for the help.

Adam

89 ATI · 08-23-2001, 03:38 PM

Don't waste your time. It doesn't do anything.

Big Bopper · 08-23-2001, 04:54 PM

Hey Adam, Your T.P.S is very important!!! It lets your motor know how much fuel it needs..You set it with a volt meter.I think that you lossen it off the 2 screws,just a little though! The 2 wires that come out of it will give you your reading,I think you want .95 volts D/C at idle,MAX! I'm no master but I think thats how it's done.You might want to ask one of the Gurus on this site they know their stuff way better than I do! So don't do it until you talk to one of them! Take care Buddy!....

StreetStang37 · 08-23-2001, 07:38 PM

In my book it says to get the lowest voltage possible (.20), not that I have it set at that.

------------------
1993 Mustang GT - March Ram Air & Pullies, K&N, C&L 73mm MAF, Edelbrock 65mm TB & EGR, 3.73 Gears, 1 5/8in. Super Comp Hooker Equal Length Headers, 2 1/2in. High Flow H-Pipe & 2 1/2in. Flowmaster Cat Back, FlowTech Cut-Outs, Pro 5.0 Shifter, 16* Timing Advance, 8.5mm MSD Super Cunductor Plug Wires, Romoved front Sway Bar, Nitto DragRadial, Pro-Shift Lite, LX lights

HiFlow5 0 · 08-24-2001, 07:12 AM

u don't want to go over 1 volt! around .90 and .95 should be safe. you use the green and black wire on the TPS to check the voltage. black is -, and green is +

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89 GT AOD w/ shift kit, B&M rachet shifter, Trickflow intake, Crane (E-type) cam, 70Tb, 75MAF, 1.6 Rockers, Pulleys, MAC headers and H-pipe, Dynomax mufflers, K&N, 3 core radiator, white face gauges, custom interior, cobra R rims
MY89GT

andy669 · 08-24-2001, 09:21 AM

Hey avbcon12, how 'bout some information you can actually use....lol....
The following is something i've copied from of one of PKRWUD's posts (he knows his **** )

The ECM determines whether or not you are at idle right at the 1 volt point, in the TPS circuit. If at idle your reading is 1.04, the ECM thinks you are driving, not idling. This could have something to do with your timing. loosen the screws on the TPS and try to rotate it far enough to get a voltage reading of .95, or close to it. Some might suggest getting it as close to 1 volt as possible for more performance, but they are idiots. There is no noticable difference in performance, but the closer you get to 1 volt, the more likely you are to confuse the ECM. The other test you should do with your TPs, that most people don't, is to unplug the connector, and hook up a DMM with a bar graph across the reference wire and the ground wire and set it to ohms. Then watch the bar graph while slowly turning the throttle. It shouldn't back step once. If it's nice and smooth, you're good, but if it jumps back and forth, the potentiometer has worn spots in it's travel (usually right after idle), and must be replaced. This can be done with a voltmeter with the connector plugged in, and by back probing the wires, and turning the ignition on, but it's much more acurate unplugged and by resistance. Anyway, once you have the TPS set, disconnect the battery, turn on your headlights for 2 seconds, reattach the neg. bat cable, pull the spout connector and start it up. Check your timing. Set it at 10 degrees BTDC. reinstall the spout and go for a drive. Post your results.

Hope this helps
andy

------------------
3 Black 94 GT Vert. AODE/TKO conversion, 3:73's, ported X-305's, GT40 manifolds, 75mm TB, 30lbers, PMS, 300 horse Top Gun wet kit, and all the other little stuff

08-23-2001, 02:42 PM	#1
avbcon12 Registered Member Join Date: Jul 2001 Location: West Bloomfield, MI Posts: 391	How do i check and set the TPS? I was wondering how i go about checking the voltage as well as setting the voltage to the TPS? And also, what is a good voltage that i should be reading? What should i set it to? thanks for the help. Adam

08-23-2001, 03:38 PM	#2
89 ATI Registered Member Join Date: Sep 2000 Location: Lafayette, Indiana Posts: 120	Don't waste your time. It doesn't do anything.

08-23-2001, 04:54 PM	#3
Big Bopper Registered Member Join Date: Jun 2000 Location: Sechelt, B.C., Canada Posts: 200	Hey Adam, Your T.P.S is very important!!! It lets your motor know how much fuel it needs..You set it with a volt meter.I think that you lossen it off the 2 screws,just a little though! The 2 wires that come out of it will give you your reading,I think you want .95 volts D/C at idle,MAX! I'm no master but I think thats how it's done.You might want to ask one of the Gurus on this site they know their stuff way better than I do! So don't do it until you talk to one of them! Take care Buddy!....

08-23-2001, 07:38 PM	#4
StreetStang37 Registered Member Join Date: Dec 2000 Location: San Jose, California USA Posts: 275	In my book it says to get the lowest voltage possible (.20), not that I have it set at that. ------------------ 1993 Mustang GT - March Ram Air & Pullies, K&N, C&L 73mm MAF, Edelbrock 65mm TB & EGR, 3.73 Gears, 1 5/8in. Super Comp Hooker Equal Length Headers, 2 1/2in. High Flow H-Pipe & 2 1/2in. Flowmaster Cat Back, FlowTech Cut-Outs, Pro 5.0 Shifter, 16* Timing Advance, 8.5mm MSD Super Cunductor Plug Wires, Romoved front Sway Bar, Nitto DragRadial, Pro-Shift Lite, LX lights

08-24-2001, 07:12 AM	#5
HiFlow5 0 Registered Member Join Date: Mar 2000 Location: Springfield, Ma, usa Posts: 706	u don't want to go over 1 volt! around .90 and .95 should be safe. you use the green and black wire on the TPS to check the voltage. black is -, and green is + ------------------ 89 GT AOD w/ shift kit, B&M rachet shifter, Trickflow intake, Crane (E-type) cam, 70Tb, 75MAF, 1.6 Rockers, Pulleys, MAC headers and H-pipe, Dynomax mufflers, K&N, 3 core radiator, white face gauges, custom interior, cobra R rims MY89GT

08-24-2001, 09:21 AM	#6
andy669 Registered Member Join Date: Jan 2001 Location: Moline Il Posts: 901	Hey avbcon12, how 'bout some information you can actually use....lol.... The following is something i've copied from of one of PKRWUD's posts (he knows his **** ) The ECM determines whether or not you are at idle right at the 1 volt point, in the TPS circuit. If at idle your reading is 1.04, the ECM thinks you are driving, not idling. This could have something to do with your timing. loosen the screws on the TPS and try to rotate it far enough to get a voltage reading of .95, or close to it. Some might suggest getting it as close to 1 volt as possible for more performance, but they are idiots. There is no noticable difference in performance, but the closer you get to 1 volt, the more likely you are to confuse the ECM. The other test you should do with your TPs, that most people don't, is to unplug the connector, and hook up a DMM with a bar graph across the reference wire and the ground wire and set it to ohms. Then watch the bar graph while slowly turning the throttle. It shouldn't back step once. If it's nice and smooth, you're good, but if it jumps back and forth, the potentiometer has worn spots in it's travel (usually right after idle), and must be replaced. This can be done with a voltmeter with the connector plugged in, and by back probing the wires, and turning the ignition on, but it's much more acurate unplugged and by resistance. Anyway, once you have the TPS set, disconnect the battery, turn on your headlights for 2 seconds, reattach the neg. bat cable, pull the spout connector and start it up. Check your timing. Set it at 10 degrees BTDC. reinstall the spout and go for a drive. Post your results. Hope this helps andy ------------------ 3 Black 94 GT Vert. AODE/TKO conversion, 3:73's, ported X-305's, GT40 manifolds, 75mm TB, 30lbers, PMS, 300 horse Top Gun wet kit, and all the other little stuff