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1990 Jeep Wrangler Overheating on hot days

Tiny
SPRINTER31
  • MEMBER
  • 1990 JEEP WRANGLER
  • 6 CYL
  • 4WD
  • MANUAL
  • 500 MILES
Just got this vehicle and it is overheating on hot days. It seems to be worst when at higher rpms for a period of time(EX. Driving on hwy)
The motor was rebuilt and carburetor was converted to howell efi kit. Everything is new and working, (water pump, radiator, thermostat 2nd one, good water flow at various points in system, no leaks,
new radiator cap,
I am wondering if efi is making it run hotter, plus being new rebuilt and everything is tighter, if thats helping it. The new radiator is a 2 row and seems small and has a shroud, also replaced fan clutch and can here it engage when hot, what else is there? Please help, thanks steve
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Monday, October 12th, 2009 AT 3:52 PM

2 Replies

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
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Wednesday, October 14th, 2009 AT 3:11 PM
Tiny
SPRINTER31
  • MEMBER
  • 2 POSTS
It is overheating to 250 and I will try the thermostat thing although when it first overheated I took the thermostat out on the side of the road thinking that vwas it but still got hot, have been thinking about upgrading to 3 row radiator, thanks for your response
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Thursday, October 15th, 2009 AT 9:19 PM

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