TPS Question (Voltage Related)
08-06-03, 05:10 PM
#1
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TPS Question (Voltage Related)
88 SE
I'm trying to adjust my TPS for the first time ever.
I'm going by the directions on this site: http://home.rmci.net/panther/tps.htm
I'm on the second step, where you check the ohms of the TPS. While the car is off, I get around 1.84k ohms.
Whent he car is running, I get the same. (This is testing the prongs on the TPS wire). Do I need to test the other prongs on the other adapter going who knows where? Does the car need to be running for a while for me to test?
Just wondering if this is normal. Any help/links/whatever would be helpful.
Thx
I'm trying to adjust my TPS for the first time ever.
I'm going by the directions on this site: http://home.rmci.net/panther/tps.htm
I'm on the second step, where you check the ohms of the TPS. While the car is off, I get around 1.84k ohms.
Whent he car is running, I get the same. (This is testing the prongs on the TPS wire). Do I need to test the other prongs on the other adapter going who knows where? Does the car need to be running for a while for me to test?
Just wondering if this is normal. Any help/links/whatever would be helpful.
Thx
08-06-03, 11:01 PM
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Yes. At the bottom of that article it mentions making sure the car is hot. Thats due to some mechanical devices called the thermowax that needs to heat up fully so it can max out its travel. You can see this device in a free, online, factory service manual at this site. http://www.iluvmyrx7.com it's the FUEL section that has the pictures/graphics/words concerning the throttle body and its adjustments. Frankly, there are good, better and best ways of setting the tps. Must be at least three or four.
Some people, if they had a 86-88 model, with the single tps plunger, would connect all the electrical plugs up on the engine. Then start the car and drive it til it got good and hot. Then let it idle. Put your digital meters negative lead on the battery ground and the positive lead into the back of the tps plug where there is a green/red wire. Put the meter on DC Volts. The meter should read one (1)volt. If not, turn the tps screw until you get one volt. Done. Turn the engine off and go get a cold one. See the above manual for the 88. Look in the FUEL SECTION. In there you will see the output for each wire on the ECU. It WILL state that on the pin that goes to the TPS, that it shoudl read one volt at idle. That wire at the ECU is the same one as at the tps. Green/red.
But the other methods also work, so do as you please. Making the two light assy is somewhat fun and can be used to interrogate the ECU for codes also, so it's not a complete loss.
Some people, if they had a 86-88 model, with the single tps plunger, would connect all the electrical plugs up on the engine. Then start the car and drive it til it got good and hot. Then let it idle. Put your digital meters negative lead on the battery ground and the positive lead into the back of the tps plug where there is a green/red wire. Put the meter on DC Volts. The meter should read one (1)volt. If not, turn the tps screw until you get one volt. Done. Turn the engine off and go get a cold one. See the above manual for the 88. Look in the FUEL SECTION. In there you will see the output for each wire on the ECU. It WILL state that on the pin that goes to the TPS, that it shoudl read one volt at idle. That wire at the ECU is the same one as at the tps. Green/red.
But the other methods also work, so do as you please. Making the two light assy is somewhat fun and can be used to interrogate the ECU for codes also, so it's not a complete loss.
08-07-03, 11:40 AM
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Thx Hailers. I'll try the one volt thing.
I think my LEDs weren't 12 volt cause they only blinked once and never light up again. Then I tested them on a 12v battery and they didn't light up.
I think my LEDs weren't 12 volt cause they only blinked once and never light up again. Then I tested them on a 12v battery and they didn't light up.
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