Hey Guys, where is the TPS sensor located on a 89 5.7 GTA? And is it expensive?
Thanks
Mike

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(Gran Turismo Americano) "The Ultimate Firebird"
Smokin 1989 GTA- Bone stock except for exhaust. (no catalytic-stainless pipe into Flowmaster 2 chamber).

 

Its screwed onto the passengers side of the throttle body and has a three wire connector plugged into it. Not sure how much they are. Used to know but I forgot. Just go to the dealer and find out. Shouldn't be more that $15 for a new Delco piece. Don't get a cheapo brand. AC Delco makes the highest quality sensors for our cars. I learned that the hard way.
bsa

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"If they do not run, Then they will die." - Stonewall Jackson
#3
'87 IROC, 355 TPI, Converted to SD, 700R4, B&M Megashifter, 3.42, Trick Flow Twisted Wedge Heads, Edelbrock Intake, Accel Runners, Comp Cam, Crane Gold rockers, Lucas 24# injectors, Edelbrock headers, Flowmaster 3'' exhaust, Mallory Ignition, Transgo Performance Shift Kit, Corvette Servo, 2,000 Stall Torque Converter

 

Thanks Irocbsa. My car just turned 100000 miles on it, and I am changing sensors etc.. just for peace of mind. I don't know if any of these sensors etc... were ever changed. And most of them aren't too expensive. I am going to change the o2 sensor next also.
Thanks again.
Mike

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(Gran Turismo Americano) "The Ultimate Firebird"
Smokin 1989 GTA- Bone stock except for exhaust. (no catalytic-stainless pipe into Flowmaster 2 chamber).

 

make sure when you put the new sensor on you set it back to factory specs(.54Vdc) with a digital voltage meter. 89s had an adjustable tps right??

also i would never buy parts from the dealer, they overcharge, just get the ACDelco part at any parts store.

 

Hi Ron, thanks. But how do I set that TPS Sensor voltage to factory specs with a meter?? And how do i know if mine is adjustable? It just looks like it has two screws and plugs in.
Thanks
Mike

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(Gran Turismo Americano) "The Ultimate Firebird"
Smokin 1989 GTA- Bone stock except for exhaust. (no catalytic-stainless pipe into Flowmaster 2 chamber).

 

The holes are elongated on a radius so you can rotate the TPS.

You adjust the TPS by loosening the screws, and installing jumper wires between the connector's 3 connections. Then you measure the voltage on the A and B wires while you turn the TPS. When the voltage reads 0.54, carefully tighten the screws. Then check the voltage again (tightening the screws may move it a bit).

 

Thanks JZA! I think I can handle that. Do I jump just the two outer wires, will they be marked a & b? I know you said there were three wires, so I was just wondering how to jump three.
Thanks man!
Mike

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(Gran Turismo Americano) "The Ultimate Firebird"
Smokin 1989 GTA- Bone stock except for exhaust. (no catalytic-stainless pipe into Flowmaster 2 chamber).

 

You just have to jumper the upper 2 wires.

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1989 IROC-Z 5.7L
NOS 150HP kit
ProBuilt 700R4, PI Vigilante 2800 stall lockup
Baer Brakes 12" Sport System

[This message has been edited by Omar (edited July 13, 2001).]