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TPS adjustment question

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Old Dec 20, 2009 | 10:50 PM
  #1  
Camaro Man 02's Avatar
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From: Indiana
Car: 1987 Camaro IROC-Z
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: Idk
TPS adjustment question

I have an 87 camaro with the adjustable tps. can you move the tps up or down to adjust it with out having any meters hooked up to it. cuz i want to do trial and error to try to adjust and i dont have the tools.
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Old Dec 20, 2009 | 11:09 PM
  #2  
vetteoz's Avatar
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: TPS adjustment question

Originally Posted by Camaro Man 02
cuz i want to do trial and error to try to adjust .
How are you going to know what voltage it is reading if you don't have a meter connected?
Set the idle voltage too high and it won't even start
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Old Dec 21, 2009 | 12:15 AM
  #3  
transam85dudeman's Avatar
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From: CALI
Car: 85' Trans Am !best car ever!
Engine: 305tpi 215hp LB9 two bolt,
Transmission: th-700r4
Axle/Gears: stock (3.27)
Re: TPS adjustment question

borrow a meter from somebody. set it to dc volts. .54volts at idle with engine off.. TIP: anything over .64volts sets off check engine light.
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Old Dec 21, 2009 | 12:19 AM
  #4  
vetteoz's Avatar
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: TPS adjustment question

Originally Posted by transam85dudeman
anything over .64volts sets off check engine light.
Over 25% TPS(? ) while cranking shuts off the injectors.
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Old Dec 21, 2009 | 11:23 AM
  #5  
doc's Avatar
doc
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Joined: Jul 1999
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From: Mims, Florida
Car: '87 IROCZ
Engine: 395 ZZ4
Transmission: ProBuilt 700R4
Axle/Gears: 9 bolt 3.70s
Re: TPS adjustment question

If you are going to do some basic tuning yourself, you have to buy the right tools for the job. For a minimum, I would say: timing light, volt meter for autos, noid light for injectors, special distributor wrench, fuel pressure gauge, and basic hand tools.
On these TPI cars, you want to be able (for yourself) to do: change out spark plugs, set the timing, set the TPS voltage, measure the fuel pressure, adjust the idle RPM,,,,,
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Old Dec 22, 2009 | 02:47 AM
  #6  
transam85dudeman's Avatar
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Joined: Mar 2006
Posts: 926
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From: CALI
Car: 85' Trans Am !best car ever!
Engine: 305tpi 215hp LB9 two bolt,
Transmission: th-700r4
Axle/Gears: stock (3.27)
Re: TPS adjustment question

Originally Posted by doc
If you are going to do some basic tuning yourself, you have to buy the right tools for the job. For a minimum, I would say: timing light, volt meter for autos, noid light for injectors, special distributor wrench, fuel pressure gauge, and basic hand tools.
On these TPI cars, you want to be able (for yourself) to do: change out spark plugs, set the timing, set the TPS voltage, measure the fuel pressure, adjust the idle RPM,,,,,
a haynes manual has everything you need to forever keep your car running.
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Old Dec 22, 2009 | 10:06 AM
  #7  
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doc
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Joined: Jul 1999
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From: Mims, Florida
Car: '87 IROCZ
Engine: 395 ZZ4
Transmission: ProBuilt 700R4
Axle/Gears: 9 bolt 3.70s
Re: TPS adjustment question

Good advice. I purchased the factory service manual when I bought my '87,,, I have referred to that manual about a 1,000 times. The Haynes manual is good but not as good as the factory service manual.
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Old Dec 22, 2009 | 04:24 PM
  #8  
vetteoz's Avatar
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: TPS adjustment question

Originally Posted by doc
The Haynes manual is good but not as good as the factory service manual.

Better than nothing but too generic and does not have the detailed diagnostics for working through engine problems ; especially engine electrical
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