Engine temperature
#1
Engine temperature
I recently bought a 2002 Blazer that seems to have an issue with engine cooling. I had a 2000 Tahoe that ran at 190 consistently. But this Blazer runs up to 225-230 regularly in traffic, drops right down and sticks at 190 if I am moving. Is this normal or should I flush and fill the coolant and maybe replace the thermostat?
#2
If the thermostat was sticking closed it would most likely only get hot on the initial warm up and wouldn't overheat after the stat opened. Its a definite possibility that it could be having poor circulation issues or if it has a clutch fan on it the clutch might be bad on it, had the same problem on my truck. Went to a flex fan and it works great even in traffic now.
#3
I recently bought a 2002 Blazer that seems to have an issue with engine cooling. I had a 2000 Tahoe that ran at 190 consistently. But this Blazer runs up to 225-230 regularly in traffic, drops right down and sticks at 190 if I am moving. Is this normal or should I flush and fill the coolant and maybe replace the thermostat?
#4
Where exactally is the thermostat located? Is it under the black metal hose comeing from the middle top of the motor going to the upper radiator hose?
#5
yup, thats where it is on a 2nd gen atleast, idk about the 1st gens.
#6
Im looking to get my truck running a little bit cooler also. Ive done a 180 to my Jeep and it ran great, and same with my moms Suburban and everythings always ran a little bit cooler but when I did it to my Jeep my heat went after that, It sucked anyway but maybe a freak accident im not sure. The suburban never did that just ran cooler and better. Would a 180 thermostat be fine for my 99 4.3 and would it affect my heat at all?
#7
use the search function and see what you come up with i know this has been discussed a number of times.
#8
Oh alright sorry
#9
Im looking to get my truck running a little bit cooler also. Ive done a 180 to my Jeep and it ran great, and same with my moms Suburban and everythings always ran a little bit cooler but when I did it to my Jeep my heat went after that, It sucked anyway but maybe a freak accident im not sure. The suburban never did that just ran cooler and better. Would a 180 thermostat be fine for my 99 4.3 and would it affect my heat at all?
If you have further questions, please start a new thread so we don't hijack this one.
Last edited by rriddle3; 05-31-2009 at 09:52 PM.
#10
Sounds like a defective fan clutch. Also, check to make sure that your fan shroud is in place.
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ve3nsv
2nd Generation S-series (1995-2005) Tech
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11-11-2009 10:00 PM