Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

1993 6.5 cooling problem

Thread Tools
 
Search this Thread
 
  #1  
Old 07-01-2012, 12:49 AM
millertime82's Avatar
Diesel Fan
Thread Starter
Join Date: Jun 2012
Posts: 11
Likes: 0
Received 1 Like on 1 Post
Default 1993 6.5 cooling problem

Hello i have a cooling issue on my 6.5 and i want to find a better radiator for it
its 3500 four door 2wd auto and only going up hill it starts to get hot is there any after market radiator i could put in it
 
  #2  
Old 07-02-2012, 12:21 PM
ebarresi5894's Avatar
Diesel Wrench
Join Date: May 2011
Location: Rehoboth, MA
Posts: 525
Received 12 Likes on 12 Posts
Default

You could see if they sell a dual core or quad core radiator for it. Did you check water pump and t-stat?
 
  #3  
Old 07-04-2012, 10:42 PM
millertime82's Avatar
Diesel Fan
Thread Starter
Join Date: Jun 2012
Posts: 11
Likes: 0
Received 1 Like on 1 Post
Default

yeah it has a new water pump and t-stat its fine when normal driving but the one and only hill i drive it wants to get hot
 
  #4  
Old 07-04-2012, 10:53 PM
ChristianKustomz's Avatar
Diesel Fan
Join Date: Jun 2012
Location: Westminster, MD
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Default

If it were me I would back flush the heater core to make sure there's no clog and it's free flowing and do the same thing for the radiator. Back flush it in both directions. If your having it overheat going up hill or under load then that's when the truck is working its hardest an under the most strain.

If everything is flowing freely with no restriction check the fan clutch. It should not spin freely. When you spin it there should be significant resistance. It will spin but not easily. If it takes little effort to spin it then it's bad and needs replacing. I hope this helps.
 
  #5  
Old 07-04-2012, 11:25 PM
2MuchJunk's Avatar
Diesel Wrench
Join Date: Feb 2010
Location: Wadesville IN
Posts: 831
Received 43 Likes on 40 Posts
Default

How old is the rad? After awhile aluminum radiators will build up a scale in them that reduces there ability to transfer heat.
 
  #6  
Old 07-05-2012, 08:07 AM
ChristianKustomz's Avatar
Diesel Fan
Join Date: Jun 2012
Location: Westminster, MD
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Default

I agree as well. That's why I suggested to flush and back flush the radiator and heater core because of that reason 2MuchJunk gave. It's very important these trucks stay cool and not overheat. It's a pain having to change headgaskets and you don't want to do that.
 
  #7  
Old 07-05-2012, 03:47 PM
millertime82's Avatar
Diesel Fan
Thread Starter
Join Date: Jun 2012
Posts: 11
Likes: 0
Received 1 Like on 1 Post
Default

thanks buddy's i will flush the rad but the fan sort of spins freely i will change anyways thanks for the input
 
  #8  
Old 07-05-2012, 05:07 PM
ChristianKustomz's Avatar
Diesel Fan
Join Date: Jun 2012
Location: Westminster, MD
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Default

keep us posted.
 
  #9  
Old 07-05-2012, 07:13 PM
jgg's Avatar
jgg
jgg is offline
Diesel Fan
Join Date: Jul 2012
Location: Atlanta, Ga.
Posts: 20
Likes: 0
Received 1 Like on 1 Post
Default

how hot is hot need a temp my 95 runs 195degree and if air temps is 95-105(Atlata ,Ga) runs 195-200 and I just put new stats in it tryed to get 180degree stats but parts are hard to get for these beasts. oh yeah my truck has only 68k on it and is in ment condition but still have to work on it daily it is a 6.5 and means work on daily but I love it
 
  #10  
Old 07-05-2012, 09:12 PM
ChristianKustomz's Avatar
Diesel Fan
Join Date: Jun 2012
Location: Westminster, MD
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Default

220* to 240* is hot. Normal is 160* to 180*. 195* isn't bad but it should definitely run cooler then that. I can tell you with it having such low miles it has set a long time and there would most certainly will be corrosion clogging something up. Flush, flush and reflush. Make sure EVERYTHING is flowing correctly with no blockage or slow flowing.
 


Quick Reply: 1993 6.5 cooling problem



All times are GMT -5. The time now is 10:11 AM.