another tps adjustment question
12-23-2010, 11:18 AM
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another tps adjustment question
I am having torque converter lockup issues, sometimes it will lockup and sometimes after I test it (brake pedal while cruising) it wont lockup again. I tested my TPS and didn't exactly get what I expected.
Heres a chart of what the Ohm meter read:
No clearance VTA-E2 .75 kO
.50 mm IDL-E2 1 kO
.80 mm IDL-E2 1 kO
Fully open VTA-E2 4.96 kO
No clearance Vc-E2 6.30 kO
These are all on the 20k range.
Everything looks good except IDL-E2, When I have the probes hooked up to IDL and E2 and move the throttle nothing happens, this leads me to suspect that the IDL part of the TPS is messed up.
What do you guys think?
Heres a chart of what the Ohm meter read:
No clearance VTA-E2 .75 kO
.50 mm IDL-E2 1 kO
.80 mm IDL-E2 1 kO
Fully open VTA-E2 4.96 kO
No clearance Vc-E2 6.30 kO
These are all on the 20k range.
Everything looks good except IDL-E2, When I have the probes hooked up to IDL and E2 and move the throttle nothing happens, this leads me to suspect that the IDL part of the TPS is messed up.
What do you guys think?
Last edited by Sansocal; 12-23-2010 at 11:19 AM.
01-13-2011, 08:47 PM
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hey razed, i adjusted the tps based on 4crawlers websites instructions and i still don't notice a change in idle speed or pitch when the jumper is in, cold or hot.
if i were to try what your suggested, would the difference make the motor 'struggle' (like a stuck open egr valve?)
if i were to try what your suggested, would the difference make the motor 'struggle' (like a stuck open egr valve?)
01-14-2011, 05:37 PM
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when i had it off the truck on the bench, it would go from 1 (open circuit) to whatever (less than 2.3k ohms) when I was adjusting it. Or are you talking about the other contacts?
01-15-2011, 07:34 AM
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try this-
put the jumper in like you were going to set the timing.
loosen the tps so that tapping on it with a screwdriver or something light moves it. you don't want a big movement but something you can like "bump" and move just slightly
move the tps counter clockwise, i.e. connector side moves up, until the idle suddenly jumps up
move the tps clockwise, connector end moves down, until the idle suddenly drops
maybe go back and do that 2-3 times so you find a spot where one tap up raises the idle and one tap down lowers it
tighten the tps and go drive
put the jumper in like you were going to set the timing.
loosen the tps so that tapping on it with a screwdriver or something light moves it. you don't want a big movement but something you can like "bump" and move just slightly
move the tps counter clockwise, i.e. connector side moves up, until the idle suddenly jumps up
move the tps clockwise, connector end moves down, until the idle suddenly drops
maybe go back and do that 2-3 times so you find a spot where one tap up raises the idle and one tap down lowers it
tighten the tps and go drive
About a year ago, my truck was doing some weird stuff. Everything pointed to the TPS. I just ended up getting a new OME since it was the original one. I tried adjusting it many times and became frustrated. Then I just resorted to this method above mentioned by raze, and it turned out well.
01-15-2011, 10:01 AM
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Warm up the engine before adjusting. Or at least that's how I did it.
I would replace the screws with allen headed ones, if possible, to make adjustment easier.
Have you seen 4 crawler's TPS write-up? Very informative, and gave me all the info I needed to troubleshoot and ultimately to replace and calibrate mine.
http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml
I would replace the screws with allen headed ones, if possible, to make adjustment easier.
Have you seen 4 crawler's TPS write-up? Very informative, and gave me all the info I needed to troubleshoot and ultimately to replace and calibrate mine.
http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml
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