Should the Throttle Position Sensor click twice....
as it is turned from full close to full open ? Mine clicks only once i start to open the throttle and i thought it should click once more at the end indicating a full throttle.
Grand Master
Good question. One click is correct. Here's a pic of my old TPS I did a while ago. The click you here in the microswitch that triggers the off-idle setting. You can see how the WOT settting works here - via the cam closing the contacts. No microswitch to click. Bentley's has the procedure to test each setting.
This one failed to trigger WOT correctly and thus became the photo donor...
Bellevue WA
90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
86 Porsche 951 - Track Toy
Auto and manual TPS' are different.
Grand Master
ah! good catch. This is from a manual....
Bellevue WA
90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
86 Porsche 951 - Track Toy
Big Time Poster
Questions???
1) Notice on the TPS mounting brackets on the sides, It looks like the TPS can 'slide' up and down the mounting bolt. So the TPS can have a varied position on the Throttle body. Does this matter?
2) If there is a difference between the TPS for an auto and manual, Do i have any issues since I coverted to a 5 spd? I do not think so since I have disabled all communication to and form the ECU of the auto tranny. Just checkin -
JoeS
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Thank you guyes....Jeff, would it be possible to send me the test procedure ?. I have the Haynes manual and it is the worst i ever seen.
Grand Master
Chad - I'm traveling thisi week, maybe someone else might post it....
Won't be home for a while...
Originally Posted by Chad535
Bellevue WA
90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
86 Porsche 951 - Track Toy
Major Contributor
Test for continuity to the center post, I think.
The initial click is the off idle switch, making contact to the center post & one of the outer posts. The other outer post is for the wide open throttle switch, which didn't work for either Jeff's or my old TPS.
Your TPS may just need to be adjusted to be in the correct range of throttle travel. If it doesn't click when moving the throttle just off idle & back, loosen the 2 bolts & rotate.
erased due to slander
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