Overheating.
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everything has checked out. Pump was fine but I still put the high flow on there. I have replaced everything in the coolant system and ignition systems. checked compression, coolant psi, everything. still overheats on the hills. I have a friend with the same truck that does the same thing and I have read hundreds of threads about others with the similar problem, and still no solution. I am going to put the 195 thermostat back in and see if maybe I just had 3 bad stats in a row [never know....]
Legend
Joined: Jul 2011
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From: Austin, TX
Weep hole on underside of pump will leave green trail to see if it's bad. Air in the cooling system creates turbulance that keeps it from circulating smoothly. Top it off & burp it to be sure. Could also be build up of corrosion so a flush may help too. Any or all of these things can cause overheating, but my money says air in the cooling system. Search sticky for each of these for details galore.
This is only the case if the seal goes bad. If imnpeller is bad and bearing and seal are good, no weeping. Usually bearing goes bad first, which in turn wollers (spelling?) out the seal.
And I agree that if there is air, then burp it. Crud may be the issue also. Doen't take much to clog enough lines in radiator to have significant effect on cooling efficiency...
Putting in a 195 stat will not keep it from overheating, and the possibility of 3 bad tsats is pretty slim. Are you running a tune to allow for the 180?
Last edited by gdstock; May 4, 2012 at 09:59 PM.
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no tune for the 180, they do not make a tuner for the 96 and older. I agree, 3 in a row is slim but never know. 195 is the OEM so I fugue ill just go back to it and see. psi in the system is fine and was professionally flushed. no hydrocarbons in the coolant.
Last edited by etdavenport; May 5, 2012 at 10:38 AM.
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just autozone stats, and yea, just as the manual shows. definalty acting lik e a stat though, runs fine all the time unless going up long stretches of road or in 4x4 going up the hill. gets a little hot with the A/C on too, but only overheats bad 4x4'in
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Could be. It is new and has been flushed also. But the truck did this before the radiator swap.
