Hello everyone, I have a 92 rs w/305tbi
my question why does my temp gauge go way up
when i am sitting at a traffic light or in a drive thru for a while then rapidly fall as i begin going again????

 

well basically when you sittin theses no air flow going through the raditor colling it as well as up the air damn, thats why when your sittin your engine gets hot and when your driving it cools off. Also the stock cooling system really sucks but thats another topic..

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91 camaro RS
- 305 TBI
Mods: Performer TBI intake, 1" TBI spacer, K+N, jet fan switch ,160 thermo,Accel control module, Jet Stage 2 chip, edelbrock TES headers, Compleate 3" Flowmaster exhaust, Edelbrock springs, KYB struts and shocks, 700R4 built by TSI, SLP tq converter, b+m trans cooler, white guage faces, megashifter..
next month: spohn LCA's and panhard rod, BMR relocation brackets,posi 323 , lt1 cam and new valve springs

 

does it rapidly go up and down, as if it was a bad guage or something, my oil pressure does that, i dont know why

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Trent
---Car---
89 Firebird/305 L03 TBI A4/t-tops
Open Element Edelbrock Aircleaner w/ K&N air filter/Summit Chrome Valve Covers
Edelbrock TES headers 3" out/flowmaster American thunder 3" exaust/Catco cat
---Stero---
Pioneer DEH-P730 Premium
Infinity 2way 4652 4x6's/Pioneer 4way ts-a6985 6x9's
profile cl640 110x4

 

Check your wires, make sure they haven't grounded out on the exhaust. Easy way to do that is an impedance test with a multimeter. Simply disconnect the wire from the sending unit, put one probe on a good chassis ground and another on the tip of the wire, if it buzzes you've shorted out your wire and need to replace it. You might want to clean up the sending unit and the wire connector, that was my problem. I wedged a small metal screw imbetween and gave it a few turns, now I don't have any false temp readings.

 

thanks guys i will try your suggestions. Trent it will go all the way up then drop back down below 200 in like no time.

 

Hey Trent my oil pressure gauge does the same thing. Been doing it for around 3 years. I hope its just a broke gauge.