Subject: Re: Hot days of Summer by Scott7 on 2012/7/26 2:49:49
Quote:
Matatk wrote: And I'll be looking forward to hearing your impressions on the fan upgrade.
I normally have zero issues with overheating. I have a newer AC Delco radiator, new water pump, everything flushed when the new motor was put in, 180* stat, fans lowered, etc. On a cool day at cruise I run in the low to mid 180s, sitting at a long light I'll creep up to 210* or so. Start moving and it drops back down. On warmer days, I might run 195* at a cruise, same issue at traffic lights. Now that the a/c is fixed, I'm experiencing the coolant climb up to 230*.
Another thing to note is I know the fan normally turns off over 45 mph...I have to check the FSM to see if that is true if the a/c is on, as well. If that's the case, if we are still experiencing high temps at 45 mph+ with the a/c on, we need to shift our focus away from the fan cfm....and I think back to underhood temps.
Matthew
I should have the fan in by this weekend and I'll be very interest in it's performance also. As I mentioned earlier I've had the cooling system flushed out, replaced the water pump, etc., etc.
Basically your description is what I've been seeing, overheating is being experienced with the a/c on. If its cooler out, say low 80's or cooler the car does much better if I can keep it moving, stop and go or load the engine up and the heat climbs, turn off the a/c and down it goes. The overheating seems to happen whenever the engine is loaded up and has to work harder, a condition not unlike turning on the a/c. Most recently I found I could not keep the engine running with the a/c on when I come to a stop. That may be incidental and more of an idle problem that anything else.
I'm pretty sure that if the a/c is on the fan stays on also. Like you I need to check my FSM.
