90 running hot
Thread Starter
Instructor
Joined: May 2003
Posts: 198
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From: Elkton MD
90 running hot
put in new water pump hoses and flushed but still running hot. It seems like fans kick on but after about 220 & 240 and dosen't cool down as long as I'm sitting still. I got an infered therometer and it reads 240 when gauge reads 250-260. I'm looking into a new radiator and lower fan temp switches. Any input?
Instructor
Joined: Dec 2006
Posts: 195
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From: Savannah Georgia
I see you changed out a few things, but no mention of changing your thermostat. If you haven't a stuck thermostat could easily be the problem.
Last edited by PurtyLilC4; Jun 20, 2007 at 09:18 PM.
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
put in new water pump hoses and flushed but still running hot. It seems like fans kick on but after about 220 & 240 and dosen't cool down as long as I'm sitting still. I got an infered therometer and it reads 240 when gauge reads 250-260. I'm looking into a new radiator and lower fan temp switches. Any input?
Have you removed the shroud to get rid of the debris that gets caught between the rad and condensor, then spray out the rad itself, (quite a bit of crap gets caught up in there). Aside from that the radiator might be trashed I believe stock are relatively inexpensive. I would either re-set fan enable/disable temps in the "chip" or a fan switch. With everything right in the system and after I have re-set temps in the chip, on a 98* day mine will only get as high as 194*, driving 184-189*.
Last edited by mseven; Jun 21, 2007 at 07:24 AM.
Thread Starter
Instructor
Joined: May 2003
Posts: 198
Likes: 0
From: Elkton MD
I did put in a 160 thermostat works great as long as temp dosen't get above 70-75 after that is when it starts running hot. I did clean out between the rad & ac coils but didn,t spray the rad. I'll give it a try.
Burning Brakes
Joined: Apr 2006
Posts: 805
Likes: 3
From: Okeechobee FL
New cooling fans
I replaced the Cooling Fans on my 1990 several months ago and it really made a difference. The ones that were on it were the originals and they were 17 years old. The bearings were worn out and sloppy which keeps them from turning as fast as they were designed for. Since replacing them, mine has not offered to overheat since. I purchsed both fans from my local dealer and they were around $80 each and pretty simple to replace. In the whole scheme of things, 2 fans are alot cheaper than an engine!
