Hi All,
Wondering if I can get some help please. The temperature light on my 1969 350 started coming on recently. I don’t have a gauge. So I did the following:
1. Checked hoses,
2. Put in a new 160 degree thermostat
3. Checked water pump is pumping
4. Clutch fan doesn’t spin freely and only about an 1/6 (maybe up to a 1/4) of a turn with a harsh flick
5. Pulled out checked cleaned, radiator
6. The timing has been done. I don’t think it’s a problem, but could be I suppose.
7. The carby seems to be bolted fine.

None of this helped; the light would still come on even on a cool day. (ie, 70 to 80 degrees F). Typically if idling at traffic lights or intermittently when driving. So I then replaced the sender. I put in a Wells TU46 - listed for heaps of GM cars including first gen Camero, but not specifically for firebird (?) I’m not sure.

Today I ran the car a few miles. (about 70 degrees F outside today) Then let it idle for about 30 minutes in my driveway. For the first time the warning light did not come on.... but! When I checked under the hood, it seemed to be cooking! I turned off the engine and could hear it all bubbling and gurgling. Sounded like it was boiling. The top radiator hose was quite firm too. There was no leaking or steam.

I put my infra-red heat gun on the hoses and they measured about 240 degrees F, which is actually cool, right? So may be it wasn’t boiling ? But it sounded like it. BTW, the car is completely standard.

So I’m hoping someone can please help me, cos I don’t know what to do next....other than to go and buy a new Mustang and have a beer.