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1988 Other GMC Models Overheatin?

Tiny
MSULLIVAN8
  • MEMBER
  • 1988 GMC
  • V8
  • 2WD
  • AUTOMATIC
  • 70,000 MILES
I have a 1988 Motorhome with a 454 Chev engine. The mileage is 70,000. I know that in a motorhome these engines have a tendancy to run hot.
The temperature guage ranges between 200 and 220 on a really hot day. I have been told by my mechanic he believes the guages to be off by 20 degrees. I have new coolant, new thermostat (165 degree thermostat) and a new radiator. Do I have a problem running at 200 to 220? Thanks Mike
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Friday, July 4th, 2008 AT 11:48 AM

2 Replies

Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
With correct anti freeze you should not have much of a problem, If you tow a car or any vehicle then it will get hotter. You can have a mechanical temperature guage installed to give you a more accurate reading. Make sure the radiator does not have any thing blocking the air flow through it.
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Thursday, December 18th, 2008 AT 3:10 PM
Tiny
BILLYMAC
  • MECHANIC
  • 2,204 POSTS
I have had to install pusher fans on these units before this fan only comes on about 210 and back off when temp is 185 just a thought billymac
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Monday, January 12th, 2009 AT 2:18 PM

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