Overheating 1989 chevy

num30footbll · 01-14-2009, 02:16 PM

I have a 1989 Chevy 1500. It has begun to overheat everytime i drive it on a trip over 2 miles. The temperature climbs rapidly to the top of the gauge where it sits right below the top for a minute or two before (most of the time) dropping down to a regular temperature. I have replaced all the coolant but that didn't change anything. Any ideas on what it is or how to fix this??

bradrhale · 01-14-2009, 02:31 PM

everything you are describing points to a thermostat. change that out and you will be good to go.

silverhairdeere · 01-14-2009, 02:32 PM

probably a sticking thermostat . i alway use motorade , they fail in the open

shd

gmctrucks · 01-14-2009, 06:38 PM

I agree with the other members.

batty1214 · 01-14-2009, 06:39 PM

dubs the rest off them correct

72'CaminoKid · 01-15-2009, 07:52 AM

i'm expierncing a pretty similar problem but with a few other variables thrown in the mix. yours def sounds like t-stat though. quick and easy fix

leolkfrm · 01-15-2009, 10:36 AM

does it creep back or stay normal? it sounds like t-stat as suggested, i like stant cause if there is an issue they stay open

asphaltguy · 01-16-2009, 07:50 PM

first do you have a plow on it? i have the same prob with a plow till i put on a new water pump it stoped the rapid over heating but still climbs a little bit with the plow on,its fine without the plow i put new thermostat on also but never flushed the radiator

01-14-2009, 02:16 PM	#1
num30footbll Full Member Join Date: Dec 2008 Posts: 20	Overheating 1989 chevy I have a 1989 Chevy 1500. It has begun to overheat everytime i drive it on a trip over 2 miles. The temperature climbs rapidly to the top of the gauge where it sits right below the top for a minute or two before (most of the time) dropping down to a regular temperature. I have replaced all the coolant but that didn't change anything. Any ideas on what it is or how to fix this??

01-15-2009, 07:52 AM	#6
72'CaminoKid Senior Member Join Date: Jun 2005 Posts: 2,756	i'm expierncing a pretty similar problem but with a few other variables thrown in the mix. yours def sounds like t-stat though. quick and easy fix __________________ 99 suburban xlt 96 silverado 91 wrangler (my baby ) 08 Honday shadow 750 (my mistress)

01-15-2009, 10:36 AM	#7
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,300	does it creep back or stay normal? it sounds like t-stat as suggested, i like stant cause if there is an issue they stay open __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

01-16-2009, 07:50 PM	#8
asphaltguy Full Member Join Date: Jan 2009 Location: ohio Posts: 20	you have a plow on it? first do you have a plow on it? i have the same prob with a plow till i put on a new water pump it stoped the rapid over heating but still climbs a little bit with the plow on,its fine without the plow i put new thermostat on also but never flushed the radiator

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01-14-2009, 02:31 PM	#2
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	everything you are describing points to a thermostat. change that out and you will be good to go.

01-14-2009, 02:32 PM	#3
silverhairdeere Senior Member Join Date: Feb 2008 Location: land between the lakes tn Posts: 1,184	probably a sticking thermostat . i alway use motorade , they fail in the open shd

01-14-2009, 06:38 PM	#4
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,033	I agree with the other members.

01-14-2009, 06:39 PM	#5
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,135	dubs the rest off them correct

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