WHY IS MY 1986 CHEVY SUBURBAN HEATING UP, ESPECIALLY WHEN I TURN IT OFF. AFTER A GOOD DRIVE , WHEN I TURN IT OFF I CAN SEE THE EXTEDRNAL GAGE GOING UP TO 250' + THEN MY STARTER FREEZES AND IM NOT ABL

Asked by Apr 01, 2013 at 12:26 AM about the 1986 Chevrolet Suburban

Question type: Maintenance & Repair

MY 1986 CHEVY SUBURBAN HEATS UP WHILE IM DRIVING=210' BUT IN TRAFFIC 230. WHEN I PARK =250+

5 Answers

8,805

First, change the thermostat, which is an easy job. While you are at it, if the hoses are more than 2 years old, change them. Have the cooling system flushed and refilled. If the water pump is very old, I would put a new one on. Water pumps are not expensive, and with patience, are a fairly easy do it yourself fix. I would also check the timing, and more importantly, the timing chain. The chain could be stretched, effectively putting the valves out of sync with the crank.

3 of 3 people found this helpful.

OK I WILL CHECK ALL OF THE ABOVE, THIS IS THE FIRST TIME I HEAR ANYTHING ABOUT A TIMING CHAIN....THANKS SO MUCH FOR YOUR REPLY.

60

Check thermostat take it out seeif it makes a difference . Spray water on your rad fins see if it all evaporates if no flush it. Mame5 sure you have antifreeze in it and not just water. Make sure no water is coming out the vent hole on the water pump.

3 of 3 people found this helpful.
101,885

As it is an 86 check your radiator fins and make sure they are clean and not plugged up by road dirt, bugs, straw, grass stuff like that as they can stop the air flow through the radiator. If the fins are clear have the radiator flow tested it might be plugged internally and need a "rod out" or a replacement radiator. As far as you starter overheat, make sure your cables are good and you might consider installing a starter heat shield, they are at most parts stores.

3 of 3 people found this helpful.
70,845

If your timing chain is worn your ignition timing will be retarded (late). Check the ignition timing with a timing light. HTH. -Jim

2 of 2 people found this helpful.

Your Answer

Suburban

Looking for a Used Suburban in your area?

CarGurus has 22,604 nationwide Suburban listings starting at $1,999.

ZIP:

Chevrolet Suburban Experts

  • #1
    Andrew Olsen
    Reputation
    1,040
  • #2
    Neal Turner
    Reputation
    930
  • #3
    Eric Fritz
    Reputation
    910
View All

Related Models For Sale

Used Ford F-150
2,487 Great Deals out of 193,508 listings starting at $799
Used GMC Suburban
293 listings starting at $3,860

Used Cars For Sale

2017 Chevrolet Suburban For Sale
79 Great Deals out of 10,233 listings starting at $39,993
2016 Chevrolet Suburban For Sale
46 Great Deals out of 1,452 listings starting at $32,988
2015 Chevrolet Suburban For Sale
39 Great Deals out of 1,463 listings starting at $24,700
2014 Chevrolet Suburban For Sale
13 Great Deals out of 525 listings starting at $18,750
2013 Chevrolet Suburban For Sale
19 Great Deals out of 601 listings starting at $10,495

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.