North American Turbocoupe Organization



temp gauge and a/f problems
Huey866 Offline
Posting Freak
#1
Is there anything that comes to anyones mind that would normaly cause our cars to run rich? And this i dont really consider a problem but its a chip on my shoulder, the factory temp gauge quit working. Is there something common that would cause this as well?

I will be back next week when something else breaks or quits working.

Huey866

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87 Turbo coupe, 5spd, full factory options, custom 3 inch exhaust
87 TurboCoupe - silver, 137k, 5-speed, 3.73 w/ superior axles, Maximum Motorsports suspension, 03 Cobra Brakes, 93 GT vacuum assist, Griggs Subframe connectors, RR cam, Essy Adj. Cam Gear, Boblog, Bob Elbow, .63 T-3, ARP headstuds, Stinger 3in Exhaust, Magnaflow Muffler, AEM gauges, Tweecer RT, Godspeed Omega 18x9
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Pete D Offline
Administrator
#2
There is a few things that will make it run rich. The Fuel pressure regulator may be faulty, the ECT may be bad. TPS and VAM can be off. There may be others. Pull the codes.

temp gauge: did the wire come off the sending unit at the block?
Pete Dunham


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sscherin Offline
Junior Member
#3
In my old 87 the temp gauge would go crazy and jump to full hot sometimes.. I could tap the gauge and it would go back down..

My current 87's was working for about 3 days then quit.. For a little while I could tap it to get it working again but now it's just dead.

I figure it's a coroded connector on the back of the gauge cluster but I havn't had the time to pull it out.
Scott Schering
http://www.pontiacs.org
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Huey866 Offline
Posting Freak
#4
I replaced the tps about a week ago. The thing is that I couldnt figure out what you all ment by .92~.98 volts. Me and a friend tried with a volt meter that was about 20 years old but i just cranked it all the way back. It still runs better than it did. I go check the sending unit. I quit working when it jumped timing one me and we had to replace the belt.

Huey

BTW, where is the ECT and the wire for the temp gauge?
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87 Turbo coupe, 5spd, full factory options, custom 3 inch exhaust

[This message has been edited by Huey866 (edited 06-24-2004).]
87 TurboCoupe - silver, 137k, 5-speed, 3.73 w/ superior axles, Maximum Motorsports suspension, 03 Cobra Brakes, 93 GT vacuum assist, Griggs Subframe connectors, RR cam, Essy Adj. Cam Gear, Boblog, Bob Elbow, .63 T-3, ARP headstuds, Stinger 3in Exhaust, Magnaflow Muffler, AEM gauges, Tweecer RT, Godspeed Omega 18x9
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JT Offline
Posting Freak
#5
I think it's important you set the TPS correctly, as it sounds like you was unable to do so. They need to be adjusted, it can't be just bolted on. I would recommend you get a cheap digital voltage meter. You can use this article for TPS adjustment help: http://www.turbotbird.com/techinfo/idlet...tment.html

If you need more clear directions, that can be provided as well.

The ECT is the Engine Coolant Temperature sensor and it tells the EEC the engine temperature. It's located near injectors number 2 and 3. It's under the upper "2.3 Liter EFI" plenum.

As far as the dead temperature gauge, that could either be a bad gauge, a bad temperature sensor (NOT the same as the ECT you asked about above), or perhaps your t-stat is stuck and the engine is not warming up?

If the engine is warming up, you can do a simple test to check the gauge and wiring. Unhook the temperature sending unit wire from the temperature sensor (this sensor is located on the driver's side of the engine and down mid-way, near the oil filter), and ground that wire. Briefly turn the key to ON for a few seconds. If you see the gauge move up and peg past the HOT, then the gauge and wiring is fine and the sensor is bad.

Quote:Originally posted by Huey866:
I replaced the tps about a week ago. The thing is that I couldnt figure out what you all ment by .92~.98 volts. Me and a friend tried with a volt meter that was about 20 years old but i just cranked it all the way back. It still runs better than it did. I go check the sending unit. I quit working when it jumped timing one me and we had to replace the belt.

Huey

BTW, where is the ECT?



[This message has been edited by JT (edited 06-24-2004).]
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Pete D Offline
Administrator
#6
I second JT. You NEED to set the TPS.
Pete Dunham


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