when my car was stock it ran very very cold. I did some mods to it and somewhere along the line something went wrong. My guess is that this occured durring the smog pump removal. whenever i drive my car it overheats. it goes to and sometimes past the 220* mark on the gauge. I never had done that before. so i put in a 160* thermostat and changed my coolent. went out to test it last night and it still was running hot(wtf)! Any thoughts on this?
Thanks

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Twells

1992 R.S. 25th Anniversary
* Borla
* Open Element
* Hypertech Chip
* Smog pump delete

Thats all for now!!

 

Fan coming on? Check the fan switch between the #6 and #8 cylinders.

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89 GTA G92
305 TPI WC 5spd w/3.45
Accel Cap & 8mm Taylor's
Custom 4" Cold Air Induction
Jet Airfoil
K&N Airfilter
160 deg stat/fan switch TB Bypass - Steel Rad
Cat back 3" Exhaust w/Terminator Muff.
HiGh FlOw Dynomax Cat
Spohn LCA's - KYB GR-2's
Moroso Crank Bolt and roller pilot bearing.
New Fuel Pump!
Autometer Vac+Oil Temp
2000 Yamaha R1 150hp 385ibs

 

Just putting in a 160 stat is not going to fix your problem. The natural running temp of a third gen is about 220* that is when the primary fan kicks in so with it running at that temp it isnt bad yet but if it runs at 240* then there is a problem. One fix you can do is change the fan switch so that it kicks on at 176* and off at 166* or you can put in a switch that kicks on at 205* and off at 185*. The first one is made by Hypertech and the second one is made by Jet. I have the same problem and am broke right now but I am going to get a fan switch to help mine and if it persists I will do try and fugre other things out to fix it.

 

You didn't remove the air dam from the underside of your radiator did you?

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86 Trans Am WS6 Black with tinted windows, ZZ4, Mini-ram, true duals, LT4 HotCam, AFR 195 heads.
***Too many other mods to mention***

"In the future, cities will become deserts,
roads will become battlefields, and the hope of mankind
will appear as a stranger" The Road Warrior

 

Hypertech sells both heat ranges. I got the Jet Stage 2 Chip, but I got the Hypertech on@200, off @185 with a GM 180 t-stat. I've heard that Hypertech's fan switchs are much more accurate than Jet's. Just what I heard.

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92 RS w/t-tops 305 TBI Auto.
170K miles and don't burn a drop o'oil
-K&N Truck filter #1500 w, open ele.
air cleaner
-Dynomax 2 1/2" cat-back
-B&M TransPak
-Jet Stage2 Chip
-180* T-Stat w/ 185* Fan Switch
-JVC CD--Alpine speakers & 4ch. amp
Rockford 2ch. to 2 MTX 12" subs

 

Does it overheat at idle? city driving? at freeway speeds?

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1989 IROC-Z 5.7L
NOS 150HP kit
ProBuilt 700R4, PI Vigilante 2800 stall lockup
Baer Brakes 12" Sport System