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TPS Killing me

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Old Aug 24, 2009 | 09:41 PM
  #1  
1970 Buick's Avatar
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From: Eastern Shore, MD
Car: 1989 GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
TPS Killing me

I have read the tech article, searched posts, tried numerous times. I am using a digital multimeter. Can someone tell me where to put the probes(red/black) Hell, I could have the wires plugged into the meter wrong or on the wrong setting. I need to get this done and am not having any luck getting a reading at all. I see how to adjust it, but w/out a reading it would be pointless. Thanks! sorry I am an electrical idiot
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Old Aug 25, 2009 | 09:19 PM
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From: Eastern Shore, MD
Car: 1989 GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPS Killing me

still need help
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Old Aug 26, 2009 | 12:42 AM
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From: La Grange Park, IL
Car: 1987 Iroc Z28/ 1982 Z28
Engine: 355 TPI IP/ 305 CFI
Transmission: T-56/ 300C
Axle/Gears: 3.42 Open/ 3.73 Posi
Re: TPS Killing me

the blue and black wires, black being on the end and is ground (easy to find) and the blue is the signal wire, which is the middle terminal. this assuming you have TPI, please update your profile to include the year, make, and model engine of your car as well as fuel induction type, you will get more responses this way, otherwise as far as we know you could have a crappy ford 302 or something :P
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Old Aug 26, 2009 | 07:25 AM
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From: Eastern Shore, MD
Car: 1989 GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPS Killing me

I assure you, there is no love for Fords over here. I will update the profile. Thanks. Yes it is a 350 TPI GTA. I will go try this morning again using the wires you said. Posting reply soon.
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Old Aug 26, 2009 | 07:33 AM
  #5  
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From: Eastern Shore, MD
Car: 1989 GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPS Killing me

OK, here is what I did. I put the black probe into the top of the plug and the red probe into the middle of the plug. All of this while the TPS is unplugged from it's jack on the TB. I got a reading of .03. I then put the probes onto the battery to make sure I was on the right setting. I got a reading of 11.98 there. I the had jumpers on the TPS plug and opened the throttle to see where the voltage went. Zero change. Does this mean I need a new TPS or am I doing something wrong? Thanks
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Old Aug 26, 2009 | 11:42 AM
  #6  
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From: La Grange Park, IL
Car: 1987 Iroc Z28/ 1982 Z28
Engine: 355 TPI IP/ 305 CFI
Transmission: T-56/ 300C
Axle/Gears: 3.42 Open/ 3.73 Posi
Re: TPS Killing me

i believe the TPS has to be plugged in, you'd have to backprobe the connector.
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Old Aug 26, 2009 | 07:14 PM
  #7  
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From: Eastern Shore, MD
Car: 1989 GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPS Killing me

OK, so that did the trick. TPS was at .58 now at .54 Still idles like sh#t and wants to stall at stop signs, but it seems to take of much faster and with more torque. Guess it is something else..maybe EGR. Alot of air is being sucked when you open the hood...It is loud!
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Old Aug 26, 2009 | 07:25 PM
  #8  
Chevy8588's Avatar
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From: La Grange Park, IL
Car: 1987 Iroc Z28/ 1982 Z28
Engine: 355 TPI IP/ 305 CFI
Transmission: T-56/ 300C
Axle/Gears: 3.42 Open/ 3.73 Posi
Re: TPS Killing me

sounds like a big vacuum leak, grab ye olde can of brake cleaner and start spraying around
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Old Aug 26, 2009 | 07:39 PM
  #9  
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From: Eastern Shore, MD
Car: 1989 GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPS Killing me

If the hose coming from the egr is not plugged into anything, could that cause the leak? All the AIR stuff is gone, so there was nowhere to plug that hose.
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Old Aug 26, 2009 | 07:59 PM
  #10  
Chevy8588's Avatar
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From: La Grange Park, IL
Car: 1987 Iroc Z28/ 1982 Z28
Engine: 355 TPI IP/ 305 CFI
Transmission: T-56/ 300C
Axle/Gears: 3.42 Open/ 3.73 Posi
Re: TPS Killing me

any vacuum hoses disconnected will cause a leak
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Old Aug 26, 2009 | 09:12 PM
  #11  
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From: Eastern Shore, MD
Car: 1989 GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPS Killing me

Is there anyway to block off or adjust the EGR with out removing the plenum? Or plug the hose?
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Old Aug 26, 2009 | 09:42 PM
  #12  
Chevy8588's Avatar
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Joined: Feb 2009
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From: La Grange Park, IL
Car: 1987 Iroc Z28/ 1982 Z28
Engine: 355 TPI IP/ 305 CFI
Transmission: T-56/ 300C
Axle/Gears: 3.42 Open/ 3.73 Posi
Re: TPS Killing me

exactly which hose are we speaing of? can u post a pic?
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Old Aug 27, 2009 | 07:26 AM
  #13  
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From: Eastern Shore, MD
Car: 1989 GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: TPS Killing me

I will try to get a pic, but it is the Smaller rubber hose that comes out of the egr and comes out from under the passenger side of the plenum.
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