barillms
NAXJA Forum User
- Location
- Eastern Ohio baby!
My 88 MJ 4.0 is running hot.
Its been a constant battle since day one.
It's been converted to an OPEN SYSTEM
and the Heater Core is bypassed.
The Details:
New OPEN STYLE OEM Autozone replcement radiator. No leaks. Not plugged with mud or anything else.
Good hoses, no leaks or crimps.
New 180 Thermostat. Not Clogged.
New OEM replacement Water Pump. Working in the Proper Direction.
New Belt, routed correctly.
Twin electric fans - 16" and 10".. no clutch fan.
Both pull TONS of air, and are both wired correctly.
When driving around town, moving faster than a crawl.. it runs at
a constant 210... even with only 1 fan running.
Immediately, when stopped... temp will start to rise.
Put the vehicle in Low Range... and start through the trail
at slow speeds the TEMP IMMEDIATELY starts to creep up.
Move up to 230, 240 in a matter of minutes.
Both fans cranking full blast.
After about 10-15 mintues of slow speed it will be up to 260-70
and ready to boil over.
The engine gets so hot the two electric fans stop working.
Im at my wits end with this problem.
I will be getting a 3 Row radiator from Advance Auto
today, and trying this. Its my last resort.
Ive seriously tried everything.
Could the block be warped?
Could the head gasket be blown?
Could the head gasket be interfering with the water ports?
Its been a constant battle since day one.
It's been converted to an OPEN SYSTEM
and the Heater Core is bypassed.
The Details:
New OPEN STYLE OEM Autozone replcement radiator. No leaks. Not plugged with mud or anything else.
Good hoses, no leaks or crimps.
New 180 Thermostat. Not Clogged.
New OEM replacement Water Pump. Working in the Proper Direction.
New Belt, routed correctly.
Twin electric fans - 16" and 10".. no clutch fan.
Both pull TONS of air, and are both wired correctly.
When driving around town, moving faster than a crawl.. it runs at
a constant 210... even with only 1 fan running.
Immediately, when stopped... temp will start to rise.
Put the vehicle in Low Range... and start through the trail
at slow speeds the TEMP IMMEDIATELY starts to creep up.
Move up to 230, 240 in a matter of minutes.
Both fans cranking full blast.
After about 10-15 mintues of slow speed it will be up to 260-70
and ready to boil over.
The engine gets so hot the two electric fans stop working.
Im at my wits end with this problem.
I will be getting a 3 Row radiator from Advance Auto
today, and trying this. Its my last resort.
Ive seriously tried everything.
Could the block be warped?
Could the head gasket be blown?
Could the head gasket be interfering with the water ports?