why is my 1999 chevy s10 blazer overheating

Asked by Jun 14, 2016 at 04:10 PM about the 1999 Chevrolet Blazer 4 Door LS

Question type: Maintenance & Repair

just put new thermostat...replaced hoses....flushed radiator and it is still
running hot....when i turn my ac off temp goes down a little. I am not loosing
water.

2 Answers

25,235

At your truck's age you might need a new water pump. The fins on the impeller may be worn down to nothing (antifreeze also takes its toll). When the truck is running squeeze the radiator hoses and see if they feel like they are under pressure.

97,125

You stated that the temp drops when you turn off the A/C, I would check for a good air flow through the radiator and A/C heat exchanger, bugs, dirt can build up and restrict flow, if it is all clean then the radiator maybe restricted internally so the coolant is not flowing as well as it should, one of those little lazer temp guns could show you how well the radiator is cooling and show any hot spots that it might have, indicating that the radiator needs replacement.

Your Answer

Add photo

Related Questions

  • why is my 1999 chevy s10 blazer overheating 2 answers

    just put new thermostat...replaced hoses....flushed radiator and it is still running hot....when i turn my ac off temp goes down a little. I am not loosing water.

    1999 Chevrolet Blazer 4 Door LS

    -

    Maintenance & Repair

  • why is my chevy 1998 blazer overheating ? and what is a easy and quick solucion 2 answers

    th temperature of my 98 blazer get up to 100 degress . very easily. i checked and replaced the radiator and the transmitions is fine, what am i missing?

    1998 Chevrolet Blazer 4 Door LS

    -

    Maintenance & Repair

  • 1997 Chevy. s10 Blazer LS 23 answers

    I have 1997 chevy s10 blazer LS with a 4.3L vortec it wouldnt start cause it wasn't getting fuel after the fuel pumped was chamged and it died driving at 60. Started when tow truck got there And I...

    1997 Chevrolet Blazer 4 Door LS 4WD

    -

    Maintenance & Repair

  • Why is my 2000 Chevy Blazer losing power when I press the gas? 2 answers

    My 2000 Chevy Blazer which has about 175,000 miles on it loses power, sputters, and tries to die especially on hills, when pressing the gas pedal. It recently kept dying and my father came to the co...

    2000 Chevrolet Blazer 4 Door LS 4WD

    -

    Maintenance & Repair

  • 1999 Chevy blazer. 1 answer

    Won't start Clicks once but won't turn over. I have put 2 different starters in it now and I'm still getting nothing. I've got fuel and the battery is good. I get spark from the starter but blaze...

    1999 Chevrolet Blazer 4 Door LT 4WD

    -

    Maintenance & Repair

Search Chevrolet Blazer Questions

Chevrolet Blazer Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,010
#2 yetilikesbeer
yetilikesbeer
Reputation 1,320
#3 Rowefast
Rowefast
Reputation 1,030
View All

Related Models For Sale

Used Chevrolet Tahoe
591 Great Deals out of 33,009 listings starting at $1,500
Used Chevrolet S-10
8 Great Deals out of 1,340 listings starting at $1,899
Used Chevrolet Silverado 1500
1,935 Great Deals out of 182,334 listings starting at $999
Used GMC Jimmy
287 listings
Used Ford Explorer
913 Great Deals out of 63,684 listings starting at $799
Used Ford F-150
2,091 Great Deals out of 192,324 listings starting at $290
Used Toyota 4Runner
222 Great Deals out of 19,177 listings starting at $2,300
Used Jeep Grand Cherokee
1,064 Great Deals out of 72,540 listings starting at $1,200
Used Chevrolet Suburban
269 Great Deals out of 19,227 listings starting at $1,999
Used Chevrolet Camaro
370 Great Deals out of 31,228 listings starting at $2,500
Used Chevrolet C/K 1500
872 listings starting at $1,950

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.