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9 answers

it is normal for the truck to run a little hotter in the summer months (normally 212- 220 depending on region) especially if you are using the a/c but if is over 220 here are some starting points,first check for air trapped in the cooling system, try flushing the radiator, check fan clutch for wear (if fan spins freely it needs replacing) check serpentine belt, check fan shroud, check fore debris in front of radiator hope this may have helped

2007-07-18 14:16:47 · answer #1 · answered by SAM I AM 4 · 1 0

I have a 2002 S-10 with the 2.2 and if I carry a load in the bed and/or run with the air conditioning on for a while, it causes the temperature to rise. If you've been cruising with the A/C on, try turning it off for a trip or two and see if the temperature comes down. Try that first before assuming you have a problem with the truck. Hope this helps.

2007-07-18 13:30:54 · answer #2 · answered by Anonymous · 0 0

If you are at or near 100,000 miles you may want to consider a radiator flush. This will replace 99.9% of your coolant. I am assuming that it is using the Dex-Cool coolant used by GM in all new vehicles. This coolant has a life expectancy of between 100,000-150,000. If it doesn't get flushed with new it breaks down and doesn't act as well as it should. This will also take debris out of the cooling system that may be causing the problem. If you do get it flushed, I would suggest switching to the standard green antifreeze/coolant. It has a life expectancy of 30,000-50,000 miles but doesn't have near as many issues as dex-cool.

2007-07-18 15:49:02 · answer #3 · answered by fastidle101 2 · 1 0

Normal is very near 212 degrees on this truck. I have a 98 S-10 with the 4.3 liter V6 and that's where she's run from the day it was new.

2007-07-18 13:12:07 · answer #4 · answered by Country Boy 7 · 0 0

Two things come to mind. Blocked radiator, needs to be rodded out. Normal corrosion will accumulate. Blocked air flow by debris of bugs, leaves. Second, low fuel flow. Bad fuel pump, dirty filter causing engine to run lean. A bad O2 sensor can cause the system to get wrong mixture.

2007-07-18 13:13:06 · answer #5 · answered by Anonymous · 0 0

I see no reference of the radiator fan comimg on. The fan would desire to come on at idle whilst coolant reaches working temp. if not then there is your situation. it additionally must come again on any time the a/c is tuened on.

2016-10-21 23:39:37 · answer #6 · answered by frasier 4 · 0 0

your cooling fan may be going out. Did you put antifreeze back in your radiator when you changed the thermo?

2007-07-18 13:11:52 · answer #7 · answered by thinkbig 3 · 0 0

timing set is off or , clogged radiator core . radiator fan clutch is out or worse scenario: blown by blown head gasket. elimination process is what i recomend.good luck
also check your radiator cap.

2007-07-18 13:11:09 · answer #8 · answered by santos laguna 3 · 1 0

weak head gaskets
fan not working properly

2007-07-18 13:20:55 · answer #9 · answered by ed 2 · 1 0

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