How to set tps??

SY2767

Member
My truck has had the stock TPS drilled out so it's adjustable. I removed my TB tonight to disassemble it for a good cleaning and noticed it, so how to i (step by step please) set it.
 

SY2767

Member
Re: How to set tps??

I would but i don't have a part# for it and if i go to get one and say i need a TPS for a syclone they will look at me like I'm a :screwy: ( i am in Canada)
 

TYRODD

My ass. Look at it.
Re: How to set tps??

Was the sensor itself drilled out, or was it the TB?...hopefully its not the TB...

If its just the sensor... Id replace it.
 

TYRODD

My ass. Look at it.
Re: How to set tps??

250rtone said:
I would but i don't have a part# for it and if i go to get one and say i need a TPS for a syclone they will look at me like I'm a :screwy: ( i am in Canada)

Id tell them, "I need a Throttle Position Sensor for a 1991 GMC Syclone, 4.3 Vin Z, eh." ;)

or

I need a TPS, part number GM #17112368 :)

(aw crap, Don beat me to it ;) )
 

SY2767

Member
Re: How to set tps??

TYRODD said:
Id tell them, "I need a Throttle Position Sensor for a 1991 GMC Syclone, 4.3 Vin Z, eh." ;)

or

I need a TPS, part number GM #17112368 :)

(aw crap, Don beat me to it ;) )


LOL....thanks guy's!!
 

SY2767

Member
Re: How to set tps??

I noticed today that when i launch my truck hard it pulls hard than dies for a split second and then pulls hard again, it don't feel like a misfire but more like the fuel cuts off or something. Would this have anything to do with my tps not being set up now that i have moved it?
 

Daron

Active member
Re: How to set tps??

There is no "set up " for the TPS. The ecm samples the voltage drop at the sensor just before start up and calls that voltage "0". Then anything 4 volts or so above that initial reading equals WOT. So, as long as the initial voltage at the TPS is less than 1 volt the ecm will be happy (going from memory so the actual numbers may be slightly off). I had a prob with my old TPS giving weird readings at closed throttle, so instead of buying a new one I adjusted it. Worked for a while, ended up just replacing it.
 
Last edited:

James Thomas

"NO CLASS"
Re: How to set tps??

250rtone said:
I noticed today that when i launch my truck hard it pulls hard than dies for a split second and then pulls hard again, it don't feel like a misfire but more like the fuel cuts off or something. Would this have anything to do with my tps not being set up now that i have moved it?


Man that sounds like a fuel slosh problem. How much fuel do you have in the tank and is your truck lowered? If you have less than half to tree quarters, the fuel drains away from the pump pick up and it sucks air and a lowered truck is worse. Do a search, you'll see.

______________
James
 

SY2767

Member
Re: How to set tps??

James Thomas said:
Man that sounds like a fuel slosh problem. How much fuel do you have in the tank and is your truck lowered? If you have less than half to tree quarters, the fuel drains away from the pump pick up and it sucks air and a lowered truck is worse. Do a search, you'll see.

______________
James


When i got the truck the previous owner had regular gas in it(about a half tank) so i threw in some seafoam and a bottle of octane boost and figured i would just use it up before a fresh tank. My truck is lowered about 2" and i had less than a quarter tank yesterday so i thought a few good launches would use some of it up quickly so it makes sense that that's what it could have been. I did notice that under hard acceleration the fuel gauge drops quite a bit.....
 
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