Throttle position switch (TPS) repair, Contact surfaces are worn |
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Throttle position switch (TPS) repair, Contact surfaces are worn |
Cevan |
May 11 2009, 11:47 AM
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#1
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Senior Member Group: Members Posts: 1,079 Joined: 11-December 06 From: Western Massachusetts Member No.: 7,351 |
I've completed my 1.8 to 2.0 motor swap and have my car running really good, except the TPS is worn right around the partially open throttle position.
I've cleaned the surface and the contacts with 2000 grit sandpaper and then used Deoxit electrial contact cleaner. This helped as it only hesitates/bucks at the barely open throttle position and cleared up the issue at positions further along the path of travel. I imagine that it's worn right at the spot where you're most often running at. I searched but couldn't find any threads on repairing this. What I want to do is move the circuit board to the right or left, so that the contacts run on a fresh part of the board. Any ideas on how to separate the circuit board from the metal body and how best to reattach it? It looks like it may be soldered at the bottom right corner. |
Cevan |
Jun 15 2009, 02:31 PM
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#2
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Senior Member Group: Members Posts: 1,079 Joined: 11-December 06 From: Western Massachusetts Member No.: 7,351 |
I fixed mine in about 10 minutes, from start to finish. It should be good for another 50,000 miles or so. That fix might kill the market for this part.
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Derek Seymour |
Jun 15 2009, 03:29 PM
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#3
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Member Group: Members Posts: 394 Joined: 10-March 09 From: Yucaipa Member No.: 10,151 Region Association: Southern California |
It may kill it for some but for others I suspect that cleaning won't be enough. I just noticed a hestitation or two while driving at lunch 5 minutes ago. Not nearly as drastic as it was before, but still noticeable. It may have something to do with the deceleration fuel cut-off since mine is a '76 (IMG:style_emoticons/default/confused24.gif). But I'm guessing my TPS is just a little to worn in some spots.
Does anyone know what Otto was selling his units for? If it was somewhere between $150-$200 then it getting these made would be doable depending on the number produced at intial manufacture. SRP any less than that and it would be a loss. |
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