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05-07-2012
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#1 |
  
Join Date: Feb 2010
Location: Pendleton, IN
Posts: 3,899
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TPS Connector Replacement
Learned something this weekend about the TPS (throttle positin sensor).
My car had one with a broken snap tab for holding the connector to the TPS. Evidently, the voltage would not stay consistent due to the broken snap tab. The car ran "ok" but had developed a small "burbble", I call it. You could feel it and hear it in the exhaust. It started last Friday. It had ran 100% after the engine work and it really dis-appointed me to have what felt like a "miss". After discussing it with Pete, we determined that the connector with the missing snap tab may be the issue. I ordered a new pigtail from O'Reiley's and spliced it into the harness today. Walah! Runs like a champ. The cams sound amazing and the exhaust tone is smooth, although pretty loud. I have pretty good neighbors and hope to keep it that way. The B&B with X pipe eliminates me from sneaking into or out of anywhere. LOL With the age of our cars, and plenum pulls, disconnecting and re-connecting, it's really no surprise that this happened on my car. Plastic gets brittle, sepecially in a heated environment.
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1988 KOH Prototype EX5023 sold 1990 ZR-1 #444 Convertible 1990 ZR-1 Black #966 1991 ZR-1 Quazar Blue #296 1957 Duntov SS Project |
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05-07-2012
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#2 |
 Join Date: Feb 2010
Location: Arvada Colorado
Posts: 192
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Re: TPS Connector Replacement
Great information, I need to replace mine as well.
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05-07-2012
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#3 |
 
Join Date: Jan 2009
Location: Portland Oregon metro area (Washington side)
Posts: 3,193
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Re: TPS Connector Replacement
Do you recall the O'Riley part # ?
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Scott  Vett owner since 1979._It's about the car and the people |
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05-07-2012
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#4 |
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Join Date: Mar 2009
Location: Orlando, FL
Posts: 1,816
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Re: TPS Connector Replacement
Better option than cut and splice, is to get a pin release tool, to allow you to reuse the stock wires and pins in a new connector housing. These tools are sold as a 3-pack, I think I paid about 9 or 10 bucks from jeg's a while back.
Tool and bare wire with pin:  pin inserted into tool, almost to the point where locking tabs are depressed.  Obviously you can't see this when the connector is assembled -- but the process is the same. Last edited by VetteMed; 05-07-2012 at 10:21 AM. |
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05-07-2012
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#5 |
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Join Date: Mar 2009
Location: Orlando, FL
Posts: 1,816
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Re: TPS Connector Replacement
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05-07-2012
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#6 |
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Join Date: Mar 2009
Location: Orlando, FL
Posts: 1,816
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Re: TPS Connector Replacement
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05-07-2012
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#7 |
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Join Date: Oct 2011
Location: STAFFORD VA,
Posts: 576
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Re: TPS Connector Replacement
YEP me too..!
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05-07-2012
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#8 | |
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Join Date: Feb 2010
Location: Pendleton, IN
Posts: 3,899
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Re: TPS Connector Replacement
Quote:
PT300 If I had known about the tool, I would have refrained from splicing the wires and heat shrinkng them.
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1988 KOH Prototype EX5023 sold 1990 ZR-1 #444 Convertible 1990 ZR-1 Black #966 1991 ZR-1 Quazar Blue #296 1957 Duntov SS Project |
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05-07-2012
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#9 |
 
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,667
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Re: TPS Connector Replacement
The OE pins go weak/break.
The 2 i had were broken/weak pins. It's not the plastic plug that makes contact it's the pins and if they're weak or broken you can change the plug and still have the issue. Pete
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'91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage |
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05-07-2012
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#10 |
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Join Date: Mar 2009
Location: Orlando, FL
Posts: 1,816
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Re: TPS Connector Replacement
Good point. I had many connectors with brittle, cracked plastic, but no problems with any broken pins.
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