GM or Ford TPS conversion?
09-16-05, 09:38 AM
#1
Rotary Enthusiast
Thread Starter
GM or Ford TPS conversion?
We're all aware that the throttle position sensors in our 2nd Gens are notorious for being finicky and failing. Mine is on its last leg, and with the price of a new OEM one, I'm considering an alternative sensor that's cheaper and more reliable.
I've heard that a few owners have successfully used a Ford TPS sensor (one post said one from a Mustang can be used), but it's vague, and I haven't found anything specifically for the 2nd Gen.
Does anyone have specific information? Part numbers, make/model/year of cars that have a specific sensor, how to wire it up and adjust it?
It would be for a 1988 Non-Turbo with factory ECU.
I've heard that a few owners have successfully used a Ford TPS sensor (one post said one from a Mustang can be used), but it's vague, and I haven't found anything specifically for the 2nd Gen.
Does anyone have specific information? Part numbers, make/model/year of cars that have a specific sensor, how to wire it up and adjust it?
It would be for a 1988 Non-Turbo with factory ECU.
09-16-05, 09:49 AM
#2
Lives on the Forum
Not something straight-forward, especially for your '88...
Your TPS goes 100% at around 1/3rd travel - it's not a true full-range TPS.
Whoever claimed to have done it...I'd like to see proof of their claims.
We're talking stock ECU, right?
-Ted
Your TPS goes 100% at around 1/3rd travel - it's not a true full-range TPS.
Whoever claimed to have done it...I'd like to see proof of their claims.
We're talking stock ECU, right?
-Ted
09-16-05, 09:53 AM
#3
Engine, Not Motor
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Originally Posted by cluosborne
We're all aware that the throttle position sensors in our 2nd Gens are notorious for being finicky and failing. Mine is on its last leg, and with the price of a new OEM one, I'm considering an alternative sensor that's cheaper and more reliable.
I've heard that a few owners have successfully used a Ford TPS sensor (one post said one from a Mustang can be used), but it's vague, and I haven't found anything specifically for the 2nd Gen.
Edit...Of course, with a standalone ECU, you can run any sensor you want. Haltechs primarily use the GM TPS, which is where you may have seen this conversion.
09-16-05, 01:18 PM
#4
Rotary Enthusiast
Thread Starter
Originally Posted by Aaron Cake
They're just old. After 20 years, they start to wear out. There's nothing really "bad" about them.
Originally Posted by Aaron Cake
There's no reason that these sensors could ne be retrofitted. HOWEVER, the stock TPS is only a quarter range unit. After 1/4 throttle, it's reading as high as it ever will. So with this in mind, you would have to mount your new sensor so it functions the same. Also, you need to keep in mind that the different TPSs have different resistance ranges. If I remember correctly, the S4 TPS is a 5K unit. You need to make sure that any TPS you retrofit has the same resistance.
Edit...Of course, with a standalone ECU, you can run any sensor you want. Haltechs primarily use the GM TPS, which is where you may have seen this conversion.
Edit...Of course, with a standalone ECU, you can run any sensor you want. Haltechs primarily use the GM TPS, which is where you may have seen this conversion.
Thanks
That still leaves the question: is there a cheaper (not necessarily better but as good) alternative to the OEM sensor?
Last edited by cluosborne; 09-16-05 at 01:20 PM. Reason: Question
09-16-05, 04:15 PM
#5
Engine, Not Motor
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If you are willing to do some fab work, any electronics store can get you a sealed 5K pot. You can then mounted it in a sealed box (think epoxy filled) and mount it.
