Throttle Position Sensor
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Junior User
Joined: Jan 2001
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From: Virginia Beach Good ol' U
Throttle Position Sensor
has anyone ever replaced the TPS on a '93 F-150 with the 302?What is the procedure for dialing in the voltage? Or is this required when replacing with a new one?Thanks in advance for any help.Later,
Cleve
Cleve
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Joined: Mar 2002
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From: Palm Coast USA
Throttle Position Sensor
I got this from a previous post on tps.
First remove the plastic cover over the throttle body. (three 10mm bolts) Remove the two hoses that go to the throttle body. As you face the front of the motor, the TPS sensor is located on the right hand side of the throttle body and is attached by two phillips head screws. Now with the ignition in the on position, but motor not running, use a digital multi-meter to check the voltage going to the sensor. I use a Craftsman #82029. its about $20. Set it register VDC. The negative of the multi-meter connects to any good ground, and the positive probes the middle wire on the TPS. Read the meter and adjust your voltage. Your target range should be in the .995-.999 area. DO NOT go above .999 or you may encounter idle problems. You adjust the voltage by loosening the screws on the sensor just enough to get some play and while watching the screen on your multi-meter. If you cant get it to go above say .956 like mine, you might have to remove the TPS sensor and enlarge the mounting holes slightly to get a little more play. Don't enlarge to much it only takes a little to get some more adjustment. Once you get the setting you want, tighten it down, and while watching the screen on your multi-meter, move the throttle to wide open once or twice to make sure your setting is correct. Re-assemble everything, and start the engine. I know that on the older mustangs, 95 and down it would pick the cars up about a tenth in the quarter mile, all for free. It seems like a lot of work I know, but every little bit counts.
First remove the plastic cover over the throttle body. (three 10mm bolts) Remove the two hoses that go to the throttle body. As you face the front of the motor, the TPS sensor is located on the right hand side of the throttle body and is attached by two phillips head screws. Now with the ignition in the on position, but motor not running, use a digital multi-meter to check the voltage going to the sensor. I use a Craftsman #82029. its about $20. Set it register VDC. The negative of the multi-meter connects to any good ground, and the positive probes the middle wire on the TPS. Read the meter and adjust your voltage. Your target range should be in the .995-.999 area. DO NOT go above .999 or you may encounter idle problems. You adjust the voltage by loosening the screws on the sensor just enough to get some play and while watching the screen on your multi-meter. If you cant get it to go above say .956 like mine, you might have to remove the TPS sensor and enlarge the mounting holes slightly to get a little more play. Don't enlarge to much it only takes a little to get some more adjustment. Once you get the setting you want, tighten it down, and while watching the screen on your multi-meter, move the throttle to wide open once or twice to make sure your setting is correct. Re-assemble everything, and start the engine. I know that on the older mustangs, 95 and down it would pick the cars up about a tenth in the quarter mile, all for free. It seems like a lot of work I know, but every little bit counts.
Thread Starter
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Junior User
Joined: Jan 2001
Posts: 86
Likes: 0
From: Virginia Beach Good ol' U
Throttle Position Sensor
On the F-150, the TPS is mounted on the bottom of the throttlebody.It's gonna be a real pain to adjust this as you said in your post.Is there any other way to adjust or is there any suggestions, short cuts , things to make it easier,etc.,etc. Later,
Cleve
Cleve
Senior User
Joined: Nov 1999
Posts: 205
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Throttle Position Sensor
It only take about 15min total to adjust this thing just right.
I took the throttle body off and kept the TPS in Place, The i turned the Throttle Body to where i could see the TPS facein me, Then Probe the Green Wire and Ground the Black, Then just Loosen one of the screws and Slowly and i mean slowly turn the TPS until you hit the right Voltage.
That should be the best way.
I took the throttle body off and kept the TPS in Place, The i turned the Throttle Body to where i could see the TPS facein me, Then Probe the Green Wire and Ground the Black, Then just Loosen one of the screws and Slowly and i mean slowly turn the TPS until you hit the right Voltage.
That should be the best way.
