Overheating Issue
Thread Starter
Intermediate
Joined: Feb 2011
Posts: 38
Likes: 0
From: Milton, FL
Overheating Issue
Was sitting at Hobby Lobby the other day waiting for the wife to do her thing and decided to let the car just sit there and idle. The ambient temperature was only 55 degrees and the compressor wasn't cycling on and off. After a few minutes I just happened to notice that the temperature guage was not that far from the upper end of the scale. I increased the RPMs a tad and immediately the temperature began to come down. I don't recall the cooling fan(s) coming on, so I'm wondering what the problem is. I haven't had the chance to check the fuse(s) yet, but besides the fan(s) itself/themselves, what else could be the problem if the fuse(s) is/are okay? It's the first time I have let it sit at idle for any period of time, but when driving around town the temperature remains around mid scale and doesn't fluctuate. Thanks.
Le Mans Master
Joined: Jan 2006
Posts: 6,564
Likes: 6
From: Woodstock Georgia
I guess you know your fans don't come on until 227*F and 236*F. Increasing the RPM would have no affect on the fans, just coolant flow. Guess you might want to check for debris in front of the radiator and if the fans are coming on (watch the difgital gauge, not the analog for this check).
Burning Brakes
Joined: Apr 2006
Posts: 805
Likes: 3
From: Okeechobee FL
I replaced Both Fan Motors on my 1990 a couple years ago. I figured that they were 17 years old ( in 1997) and that they were probably getting tired. They were around $80 each from my local Chevy Dealer, and I haven't had a problem out of them (I was before). I replaced them myself in less that an hour. Just the Piece of Mind was worth the expense. I would definitely suggest it. Along with checking the front of the radiator for debris and it wouldn't hurt to flush the radiator. Maintenance is A LOT Cheaper than Repairs. And A LOT Less of a Pain In The Behind when done on your own time than on a trip!
Last edited by trulytex; Mar 10, 2011 at 11:42 PM.
Race Director
Joined: Dec 2000
Posts: 17,551
Likes: 26
From: El Paso Texas
I guess you know your fans don't come on until 227*F and 236*F. Increasing the RPM would have no affect on the fans, just coolant flow. Guess you might want to check for debris in front of the radiator and if the fans are coming on (watch the difgital gauge, not the analog for this check).
What he said. Switch over to the digital. My gauge is almost pegged when the digital reads 227. And of course, C4's are road vacuums, and the debris becomes firmly implanted in the front of the radiator. Check yours.
Thread Starter
Intermediate
Joined: Feb 2011
Posts: 38
Likes: 0
From: Milton, FL
I guess you know your fans don't come on until 227*F and 236*F. Increasing the RPM would have no affect on the fans, just coolant flow. Guess you might want to check for debris in front of the radiator and if the fans are coming on (watch the difgital gauge, not the analog for this check).
Jim aka #1weatherman
