Cooling System Bliss
Thread Starter
Melting Slicks
Joined: Jul 2000
Posts: 2,107
Likes: 14
From: Lancaster PA
Cooling System Bliss
I've had my 94 for about 2 months and the temps it was running kept me nervous. It would not be below 210 or so even cruising down the highway and when sitting still it would quickly rise to 240 and the fans would not bring it down very fast. After reading many threads on this here on the forum I flushed the system and then pulled the rad. It was packed full of sand and debris as was the AC condesor. I blew it out with compressed air for about 2 hours until I was satisfied. I also installed the GMP fan switch from Ecklers at the same time. Today I autocrossed and the temp never rose above 200 all day and it cruises at 185. I am much happier now. Craig 
Melting Slicks
Joined: Jun 2004
Posts: 2,453
Likes: 81
From: Fishin' Pole FL
I have a '94 and i made a device with a brush on it that attaches to the smaller hose on the shop vac. It fits thru the hole on the passenger side between the condenser and the radiator. brushes the stuff off and sucks it up. Doesn't work as good as compressed air but i don't have to take anything apart.
Racer
Joined: Jun 2004
Posts: 260
Likes: 0
St. Jude Donor '05
My 90 is pretty much in the same shape. I check the front of the radiator through the pass-side opening and it looks like a varmit got vaporized on the front.
Symptoms: Runs steady mid-guage down the freeway at 70mph, then once I drop down to the city streets temp begins a slow steady climb towards the danger zone that the fans just can't bring down. Fans work, hoses good, unknown t-stat probably stock.
Currently in process of pulling the radiator for a full cleaning per Lars G.
https://www.corvetteforum.com/techti...D=53&TopicID=2
But one thing escapes me. Does anyone have a pic of the temp sensing unit that is near the throttle body, that needs to be pulled when flushing the system? For some reason I can't seem to find it. OK, OK,
smack me now. Then help me out 
Or... then it might just be a bad T-Stat
Symptoms: Runs steady mid-guage down the freeway at 70mph, then once I drop down to the city streets temp begins a slow steady climb towards the danger zone that the fans just can't bring down. Fans work, hoses good, unknown t-stat probably stock.
Currently in process of pulling the radiator for a full cleaning per Lars G.
https://www.corvetteforum.com/techti...D=53&TopicID=2
But one thing escapes me. Does anyone have a pic of the temp sensing unit that is near the throttle body, that needs to be pulled when flushing the system? For some reason I can't seem to find it. OK, OK,
smack me now. Then help me out Or... then it might just be a bad T-Stat
Last edited by ~SlvrFox~; Jul 26, 2004 at 12:16 PM.
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
Heat
Originally Posted by dndrsn
I have a '94 and i made a device with a brush on it that attaches to the smaller hose on the shop vac. It fits thru the hole on the passenger side between the condenser and the radiator. brushes the stuff off and sucks it up. Doesn't work as good as compressed air but i don't have to take anything apart.
on the cleaning end. I clean the radiator monthly now.
