are there any differences in the TPS sensor 85-91
Thread Starter
Melting Slicks
Joined: Apr 2002
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From: down that one road next to that big tree
are there any differences in the TPS sensor 85-91
well are there? i've seen a couple different part listings but TPIS for example only lists one part, are they the same for the 95-91? also does the same go for the air idle control valve?
Team Owner
Joined: Dec 2000
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From: SE NY
Cruise-In II Veteran
Re: are there any differences in the TPS sensor 85-91 (gtsyellow)
It looks like the one shown in the TPIS catalog is for a '90-'91 Vette; it's not adjustable. The earlier ones, like mine, are adjustable.
I believe the IAC is the same for all L98s.
I believe the IAC is the same for all L98s.
Drifting
Joined: May 1999
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From: Sacramento, CA Money can't buy happiness - but it's more comfortable to cry in a Corvette than a Yugo.
Re: are there any differences in the TPS sensor 85-91 (gtsyellow)
gtsyellow,
The TPS for 85-91 is the same. SENSOR, THROTTLE POSITION (TPS)
It is adjustable as 65Z01 mentioned. It can be purchased in a kit from GM also GROUP 3.339 SENSOR KIT, THROTTLE POSITION. The kit includes 2 new TPS hold down screws.
The IAC for 85-91 is also the same.
It too can be purchased in a kit from GM as GROUP 3.338 VALVE KIT, IDLE AIR CONTROL. The kit includes a new IAC gasket.
-Mike
The TPS for 85-91 is the same. SENSOR, THROTTLE POSITION (TPS)
It is adjustable as 65Z01 mentioned. It can be purchased in a kit from GM also GROUP 3.339 SENSOR KIT, THROTTLE POSITION. The kit includes 2 new TPS hold down screws.
The IAC for 85-91 is also the same.
It too can be purchased in a kit from GM as GROUP 3.338 VALVE KIT, IDLE AIR CONTROL. The kit includes a new IAC gasket.
-Mike
Original Founding Member!
Joined: Jul 1999
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From: Granby, MA
Cruise-In 1, 3, 9. 10 & 11 Veteran
Re: are there any differences in the TPS sensor 85-91 (Raistlin)
well I have checked into this also...as I too have a 1990....the judgement is really out....and I am still kinda confused....I have seen the kits and even my manual shows how to use it and ADJUST IT....but proofs in the pudding...I looked physically at mine....and there is no way it is adjustable....the screw holes are simply that....just screw holes...there is no curvature to slide the sensor back and forth on...as in the older models.....there is just the holes....so its position is locked.....as for getting one with the adjustability....hmmmm i dont' know if that would work honestly...the older and newer cars came with MAF's....NOT THE 90 OR 91....iam wondering if this has played a part....because the system is speed density and controlled by the computer....therefore TPS is also regulated by the computer....its either on or off.....if I remember correctly....
jeff
jeff
Thread Starter
Melting Slicks
Joined: Apr 2002
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From: down that one road next to that big tree
Re: are there any differences in the TPS sensor 85-91 (TALMADGE)
i have a spare of a 1989 TB, worked just fine, slightly different part number but the car is running great. i was lucky enough to buy a miniram & 52mm with all the rails and sensors for $600 awhile back :D just tried the IAC and TPS from the 1989.....works wonderful on the 1990
Le Mans Master
Joined: Feb 2000
Posts: 9,715
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From: Kempner Texas
Re: are there any differences in the TPS sensor 85-91 (XtremeVette)
well I have checked into this also...as I too have a 1990....the judgement is really out....and I am still kinda confused....I have seen the kits and even my manual shows how to use it and ADJUST IT....but proofs in the pudding...I looked physically at mine....and there is no way it is adjustable....the screw holes are simply that....just screw holes...there is no curvature to slide the sensor back and forth on...as in the older models.....there is just the holes....so its position is locked.....as for getting one with the adjustability....hmmmm i dont' know if that would work honestly...the older and newer cars came with MAF's....NOT THE 90 OR 91....iam wondering if this has played a part....because the system is speed density and controlled by the computer....therefore TPS is also regulated by the computer....its either on or off.....if I remember correctly....
jeff
jeff
If you've got to buy one, though, it would be better to buy the correct one instead of trying to modify one not meant for your year car. Or course, if someone gave you one, etc., well . . .
Hope this helps.
Jake
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Safety Car
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From: Ohio
Re: are there any differences in the TPS sensor 85-91 (gtsyellow)
The 90 & 91's are technically non adjustable. The computer eventually compensates for the change in voltage if you do adjust it. Been there.
