i have had overheating problems with this car since switching to carburated system. it has a new waterpump, new radiator, new hoses. have tried removing the thermostat, putting a new one in, at the moment it has a thermostat "shell" in it. it does seem to run a little cooler this way. I have the fans wired on all of the time. When I made the switch to carb, I had to put an aftermarket module on it to tell the fan when to come on (the obc is gone). It is hot outside (mid 90's), but still should cool a little. It also does not start well after it warms up. It "clicks" like it would when battery is low.
any ideas would be greatly appreciated.

 

Make sure your timing is set correctly.

 

Carb could be running to lean. Clicking noise check connections at the starter.

 

i have the same problem with my 89 firebird and replaced just about everything around its overheat. no cracks or blown head...but still overheats. havent tired the timing. plus the stadard radiators dont fit in my car. looking to for help/advise from anyone

 

i did find that my temp guage was off some, i put a mechanical guage in. it still wants to heat up to 200. even goes a bit higher in traffic. seems like i have tried about everything. is there any water pumps available that could move more water? maybe even a 3 or 4 core radiator?
the clicking does sound like it comes from the starter - i just put a new cable from battery to starter and no help. i even added another ground strap from engine to frame.

 

i went online and ordered an after market water pump...spent $200 on it and still doesnt help with overheating issues. what do u spark plugs look like? it may be cause by fuel isses too. when i changed my fuel pump it lowered the heat by 20 degrees. u can also add an additvie to help reduce it another 20 degrees...and u may need a new starter if its making clicking sounds that what they do when there going out

 

Ok try cleaning your radiator fins, take a garden hose and wash em good. Check for radiator hose collapsing when it gets hot.

 

radiator is new , maybe a month old, hoses are new, i did look for collapsing, found nothing there. i flushed the one for the air, it didnt seem blocked.
motor was just rebuilt in february. plugs were new then, as was the starter.

 

and...it only clicks like that when warmed up good, not necessarily hot, just warmed up.

 

Check your wind deflector under the car.