C5 Overheating in AZ
Thread Starter
Cruising
Joined: May 2019
Posts: 13
Likes: 2
I'm running 6 spd and testing the car in city driving with a/c on and in the heat of the day. It seems to be ok while you're moving but seems to slightly climb at idle, then doesn't go back down while moving. Fans will come on but I don't know if they are on high or low. Just drove it briefly and stayed below 230.
Melting Slicks
Joined: Nov 1999
Posts: 2,348
Likes: 859
From: MI
Cruise-In VI Veteran
Specialk70: Do your temps climb to 235-240F during highway driving, street driving, or idling?
STRMLNE: Same question, since you're in the same area. You don't see above 228F. Highway, street, idle?
At 110F ambient, I would not be totally surprised at 240F hot idle, but I'd consider 240F too high if you're doing 75mph in 6th gear.
(Actually, are both of you running 6-speeds? The automatic will likely run hotter due to the trans cooler portion of the radiator, if I understand correctly.)
STRMLNE: Same question, since you're in the same area. You don't see above 228F. Highway, street, idle?
At 110F ambient, I would not be totally surprised at 240F hot idle, but I'd consider 240F too high if you're doing 75mph in 6th gear.
(Actually, are both of you running 6-speeds? The automatic will likely run hotter due to the trans cooler portion of the radiator, if I understand correctly.)
Additional as to the OP states the Rad and AC HX were replaced, need to understand the condition of the Rad and AC HX foam seals to make sure the cooling air is NOT taking the path of least resistance and going around these heat exchangers,, for clarity check this link and OP, post up your results of your visual inspection.
https://www.corvetteforum.com/forums...t-cooling.html
The OP states the cooling fans are running but we need to understand that as temp rises, do the fans go in to "HIGH SPEED" mode are not stuck in low speed mode and as there are two (2) fans, it will be helpful if the OP can confirm that both fans are operating correctly in LOW speed and HIGH speed mode.
For better understanding, link here https://www.corvetteforum.com/forums...fan-speed.html
Hope this gets you pointed in the right direction,
Cheers,
Goose
