Getting hot when running A/C

[pontiacgp]

But, but, my local Autozoner said that my Bonneville doesn't have a 350. If you can't believe the guy at the parts counter, who can you believe?

 

[Wageslave]

How accurate is your temp gauge? I know it sounds like a stupid question but think about it.
When you shut the engine off did it boil over?
I good tool is a laser pointed temp gauge. Hit tstat housing and see what the temp is

It should be accurate enough to be believable. When I had the Megasquirt installed I ran dual coolant sensors, one in the head for the Megasquirt and one where the intake feeds the water pump for the gauge cluster. They always matched well, so I am guessing that nothing has changed there to effect it.

 

[pontiacgp]

I don't think your rad can handle the 350

 

[oldsmobile joe]

Look down between the condenser and radiator and check for dirt, fuzz, lint, leaves, etc on the radiator fins. If so, wash off with a garden hose spraying from inside towards the front of the car.

 

[airboatgreg]

Remember that automatic cooling fans do not come on until about 230 degrees

 

[Wageslave]

Remember that automatic cooling fans do not come on until about 230 degrees

I have a PWM fan controller that kicks on a out 190 or so. It has an A/C wire that kicks it on 100% speed at any temperature when enabled. It seems to be working as it should.

 

[Wageslave]

I don't think your rad can handle the 350

It is possible, as I wasn't too impressed with the radiator. I am also wondering if the fans can't move enough air to handle the load of the radiator and condenser both. The cloud car fans leave a 6-8 inch gap at the top of the radiator that isn't covered.

 

[pontiacgp]

what size and the cfm rating of those fans?

 

[Ribbedroof]

Fans rotating in the correct direction? I only ask because I've seen it wrong more than once.

 

[Wageslave]

what size and the cfm rating of those fans?

Supposedly about 3000-3500 cfm but there are no real hard numbers on that. I think they are roughly 15"x25", but I'm not near the car to measure at the moment. It is a good fit for the radiator, just a little bit short.