Overheating
09-11-2017, 09:27 PM
#1
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Car: 1991 rs, 1985 z28
Engine: 3.1 v6, 305 tpi
Transmission: 700r4, 700r4
Axle/Gears: 3.23, 3.23
Overheating
91 camaro 3.1. The gauge shows its overheating but the coolant in the radiator is staying just a bit warm and the thermostat is opening. Any help would be appreciated thanks
09-12-2017, 07:09 AM
#3
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Re: Overheating
The factory gauges do interesting things, if you dont think it is actually overheating grab a new temp sensor and maybe an IR temp gun from harbor freight
09-12-2017, 10:15 AM
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Car: 1991 rs, 1985 z28
Engine: 3.1 v6, 305 tpi
Transmission: 700r4, 700r4
Axle/Gears: 3.23, 3.23
Re: Overheating
Its the factory analog gauges and the gauge wasn't working before so I replaced the temp sensor already and that's when it at least started working
09-12-2017, 04:20 PM
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Car: 1988 Camaro Sport Coupe
Engine: The All-Powerful 2.8l!! :P
Re: Overheating
How hot is "overheating "? These gauges can be a bit off, a cheap temp gun wouldn't hurt to double check
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09-12-2017, 11:20 PM
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Car: 1988 Camaro Sport Coupe
Engine: The All-Powerful 2.8l!! :P
Re: Overheating
Well something isn't working right 
look at your fan relay on the firewall near the brake booster, it has rounded edges and 4 wires running to it. One is black with a red stripe, another is green with a white stripe, and I can't remember what color the other 2 are the point is run a wire from that green wire to a ground and turn the key ON. Your fan should come on now, and your problem is likely something with the temp switch....
best of luck
look at your fan relay on the firewall near the brake booster, it has rounded edges and 4 wires running to it. One is black with a red stripe, another is green with a white stripe, and I can't remember what color the other 2 are
the point is run a wire from that green wire to a ground and turn the key ON. Your fan should come on now, and your problem is likely something with the temp switch....best of luck
09-12-2017, 11:42 PM
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Car: 1991 rs, 1985 z28
Engine: 3.1 v6, 305 tpi
Transmission: 700r4, 700r4
Axle/Gears: 3.23, 3.23
Re: Overheating
It was wired to a toggle switch when I got it but when I pulled the old engine and installed the new one I ripped that out. Might just wire it back up that way. Thanks
09-13-2017, 10:18 AM
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Car: 1988 Camaro Sport Coupe
Engine: The All-Powerful 2.8l!! :P
Re: Overheating
I've seen some members wire their car with a switch and another generic relay, so that your fan system will still work stock, or you. can force it on with a switch
09-13-2017, 10:57 AM
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Car: 1991 rs, 1985 z28
Engine: 3.1 v6, 305 tpi
Transmission: 700r4, 700r4
Axle/Gears: 3.23, 3.23
Re: Overheating
Yeah I've seen that too, it was wired with a switch so I'll probably do that again
I like having my car that way, runs half as hot as it should lol
09-13-2017, 10:56 PM
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Car: 1991 rs, 1985 z28
Engine: 3.1 v6, 305 tpi
Transmission: 700r4, 700r4
Axle/Gears: 3.23, 3.23
Re: Overheating
True lol, I'm still wondering why the coolant in the radiator is staying cool enough for me to put my finger in it after the thermostat has opened tho
09-14-2017, 03:20 PM
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Car: 1988 Camaro Sport Coupe
Engine: The All-Powerful 2.8l!! :P
Re: Overheating
I never tried touching it hot, I'm just happy enough not seeing smoke billowing out the hood 
09-14-2017, 04:25 PM
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Car: 1991 rs, 1985 z28
Engine: 3.1 v6, 305 tpi
Transmission: 700r4, 700r4
Axle/Gears: 3.23, 3.23
Re: Overheating
Lol I had that too as I've slowly been bringing her back to life
09-15-2017, 01:44 AM
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Car: 1988 Camaro Sport Coupe
Engine: The All-Powerful 2.8l!! :P
Re: Overheating
Haha that was me when I first got my car, it was so much fun bringing her back to life! When she wanted to die on the side of the road, not so much
09-15-2017, 09:30 AM
#18
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Car: 1991 rs, 1985 z28
Engine: 3.1 v6, 305 tpi
Transmission: 700r4, 700r4
Axle/Gears: 3.23, 3.23
Re: Overheating
Lol she's still got awhile before she's road ready, but it at least runs now. It sat for like 12 years before I bought it