Best Way to Adjust TPS

suprabad

suprabad

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The TSRM seems a little vague on this subject to me. So I'm wondering what is the best way to adjust the TPS? Car running or not? If off...key on? If you read that passage of the TSRM on step 1 it says start the car and when you look on the next page for step 2 it never says turn car off, only disconnect the TPS plug. And what does deflect mean?, as in "turn TPS untill multimeter needle deflects.

Speak slowly and clearly as electrics aren't my forte'. Thanks
 
CPT Furious

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It means on the old school multimeters that didn't have digital displays. On the digital ones, you'll see the resistance jump pretty high.
 
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bluemax

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Toyota told me that the TSRM is not the way they set it.
They short the service connector to get into basic timing mode (I forget which terminals...T1 and something?) and turn the TPS until the timing jumps down from advanced to basic. Then lock down the two screws. So thats how I set mine.
Also they told me that the resistances of the TPS in the TSRM is not correct for my vehicle ('87).
 
Jeff Lange

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bluemax said:
Toyota told me that the TSRM is not the way they set it.
They short the service connector to get into basic timing mode (I forget which terminals...T1 and something?) and turn the TPS until the timing jumps down from advanced to basic. Then lock down the two screws. So thats how I set mine.
Also they told me that the resistances of the TPS in the TSRM is not correct for my vehicle ('87).
Click to expand...

Not sure which Toyota dealer you went to, but they should have the service manual for your specific year on hand, and that should be the way they set it, at least, that's the way dealers here do it.

Turning the TPS and watching the timing, etc, can be done, but it is not as accurate as going by resistances, and sometimes the TPS will not be set correctly.

Also, as far as I know all the 7M-GE and 7M-GTE TPS' are interchangable (although there are 2 part numbers), and are all set to the same specifications.
 
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billspreston01

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I set mine a few days ago (yeah...realllly easy to hold the needles on the connectors of the tps and try rotating it REALLY slowly while watching the gauge...and then trying not to move it when you tighten the screws) and all I found was that while turning it clockwise the numbers would rise and then all of a sudden jump off the scale (digital multimeter) so they would go up and then it would just read 1.0
 
shaeff

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why dont you just get super small female spade connectors, and make jumpers to go from your ohm meters to the TPS? its much easier that way:) you can easily hold the TPS/TB, and watch the ohm meter without anything slipping off ;)

-shaeff
 
RM777

RM777

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Jeff Lange said:
I've found that it's best to have 2 people when adjusting with an ohmmeter than can't clip onto the TPS terminals.
Click to expand...

Do you need to remove the throttle body? If not, how do you get to the bottom screw? Thanks.
 
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suprabad

suprabad

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billspreston01 said:
I set mine a few days ago (yeah...realllly easy to hold the needles on the connectors of the tps and try rotating it REALLY slowly while watching the gauge...and then trying not to move it when you tighten the screws) and all I found was that while turning it clockwise the numbers would rise and then all of a sudden jump off the scale (digital multimeter) so they would go up and then it would just read 1.0
Click to expand...

EXACTLY!!!
This thing is a piece of shit! I need like two more arms. And as far as the TSRM goes "turn TPS untill needle deflects then tighten screws" WTF does that mean? I've asked three different electronics "experts" and got three different answers. As for the guys who said "it's easy" I suspect their lieing or they don't have theirs adjusted right 'cause it's not that easy.

I adjusted my TPS yesterday (per TSRM) and now the car is all jerky when I let off the throttle...it's a nightmare, and the worst part is when I try and do it again tomorrow I don't know what I'll do that will be any different (definition of insanity=do the same thing and expect a different result).

I read all the posts and I'm still confused. :icon_conf :aigo:
 
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shaeff

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suprabad said:
And as far as the TSRM goes "turn TPS untill needle deflects then tighten screws" WTF does that mean?
Click to expand...

CPT Furious said:
It means on the old school multimeters that didn't have digital displays. On the digital ones, you'll see the resistance jump pretty high.
Click to expand...

-shaeff
 
Jeff Lange

Jeff Lange

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The resistance reading will be pretty consistant, going up in small amounts, then all of a sudden it will jump up to infinity on a digital ohmmeter. That's when it deflects. Twist it back and check it a couple times before tightening down the screw.

Also, I'm not lying, that's really not a very nice assertion.
 
Nick M

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bluemax said:
Toyota told me that the TSRM is not the way they set it.
They short the service connector to get into basic timing mode (I forget which terminals...T1 and something?) and turn the TPS until the timing jumps down from advanced to basic. Then lock down the two screws. So thats how I set mine.
Also they told me that the resistances of the TPS in the TSRM is not correct for my vehicle ('87).
Click to expand...
Where do people find these dealers. I worked there. (not that dealer) Nobody ever said dont do what the repair manual says. Just the opposite. Follow it.
 
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billspreston01

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mine was being jerky too because I had it rotated too far counter-clockwise...so I got the ohm meter out and slowly moved it, and checked the resistance, moved it (clockwise) and checked the resistance, when i finally checked and the resistance had spiked, I backed it off just a LITTLE bit and tightened it down....I have a screwdrive that's shaped like an L and I used that for the bottom screw (blind of course)
 
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