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rough idle, ive already used the search

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Old Aug 27, 2011 | 09:51 PM
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Originally Posted by cdf43
alright thanks a lot. i dont have a haynes. but i know i should get one
If you want to test/adjust your TPS, PM me your email address and I'll send you a simple set of instructions to do so. Haynes is not a good source for this info.
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Old Aug 27, 2011 | 09:53 PM
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True. My Hayes says nothing on how to adjust
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Old Aug 27, 2011 | 09:55 PM
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Originally Posted by cruiser54
If you want to test/adjust your TPS, PM me your email address and I'll send you a simple set of instructions to do so. Haynes is not a good source for this info.
You can't adjust the TPS on a '96. It should read > 200 millivolts with the throttle closed and < 4.8 fully open reading off the center and ground terminals with the TPS connected.
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Old Aug 27, 2011 | 09:58 PM
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Originally Posted by CattyXJ
You can't adjust the TPS on a '96. It should read > 200 millivolts with the throttle closed and < 4.8 fully open reading off the center and ground terminals with the TPS connected.
Good thing he's got an '87 then. They are adjustable.
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Old Aug 27, 2011 | 09:59 PM
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Originally Posted by CattyXJ

Get a multimeter and a Haynes manual and start checking sensors if you don't want to throw a lot of money at it...
Free and to the point http://www.lunghd.com/Tech_Articles/...iagnostics.htm
Last edited by Slick761; Aug 27, 2011 at 10:01 PM.
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Old Aug 27, 2011 | 09:59 PM
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Originally Posted by cruiser54

Good thing he's got an '87 then. They are adjustable.
My bad wrong thread
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Old Aug 27, 2011 | 10:01 PM
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Originally Posted by CattyXJ
My bad wrong thread
LOL. I know how that goes being on 4 forums and following threads that are similar.
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Old Aug 27, 2011 | 10:03 PM
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Originally Posted by cruiser54

LOL. I know how that goes being on 4 forums and following threads that are similar.
X2
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Old Aug 27, 2011 | 10:04 PM
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Originally Posted by cruiser54

LOL. I know how that goes being on 4 forums and following threads that are similar.
I'm glad it's the wrong thread bc the one that was for is pissing me off and someone saying adjust the TPS on a '96 almost sent me over the edge. Lol. I need to log off.
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Old Aug 27, 2011 | 10:13 PM
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Originally Posted by cdf43
update

filled the tank with good gas, added fuel system cleaner, checked for vacuum leaks useing carb cleaner. cleaned the throttle body and throttle plate, which wernt to bad. cleaned the IAC.

problem still there.

what steps should i try next
Ok so did you ohm out your tps? Use a mm set to resistance and slowly move the tps through its range. It shows bad spots much more accurately then just using the volt test. Also I have found that adjusting it forward or back just .1 volts makes a big difference. Other then that the map sensor will make it run pretty rough. Check the lunghd link I posted earlier. It will take you through sensor diagnostics.
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Old Aug 27, 2011 | 10:20 PM
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Originally Posted by cruiser54
If you want to test/adjust your TPS, PM me your email address and I'll send you a simple set of instructions to do so. Haynes is not a good source for this info.

pm sent
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Old Aug 27, 2011 | 10:22 PM
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Originally Posted by Slick761
Ok so did you ohm out your tps? Use a mm set to resistance and slowly move the tps through its range. It shows bad spots much more accurately then just using the volt test. Also I have found that adjusting it forward or back just .1 volts makes a big difference. Other then that the map sensor will make it run pretty rough. Check the lunghd link I posted earlier. It will take you through sensor diagnostics.
thanks, tomorrow im goin to poke around with a MM and see what i find. i know how to test a TPS with a graphing MM, but unfortually i dont have access to one anymore
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Old Aug 28, 2011 | 08:27 PM
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So I hooked up a MM to the TPS set the idle to .08. Started her up and it idled at about 3000rpms. I checked it again and noticed it was reading 3.8 at WOT. That seems a little low to me. I'm thinking it might be the TPS.

What should WOT be at? Is 3.8 too low
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Old Aug 28, 2011 | 08:33 PM
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4.8 WOT. I am replacing my TPs tomorrow. Will tell you HOw it goes.
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Old Aug 28, 2011 | 08:56 PM
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Originally Posted by cdf43
So I hooked up a MM to the TPS set the idle to .08. Started her up and it idled at about 3000rpms. I checked it again and noticed it was reading 3.8 at WOT. That seems a little low to me. I'm thinking it might be the TPS.

What should WOT be at? Is 3.8 too low
That shouldn't really affect idle. Move it up .1 and down .1 and see what happens.
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