ataw10
Member
- Joined
- October 22, 2020
- Messages
- 11
- Reaction score
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- City, State
- HOLT
- Year, Model & Trim Level
- 2003,4.0 sohc , explorer
I guess ill start here i have never in my life been so stumped for words on finding this issues this will be a long post so i have a 2003 mount , 4.0 sohc . stock engine nothing modified.i have been having terrible over heating issues.
Things i have checked an confirmed 100% working
radiator- flow rate tested 95% flow , tested with cold an hot as well as checked with my thermstat gun. no cold spots front or back.
water pump - checked flow rate is bassicly 100% , it was changed cuz i was runing out of ideas. so thats fine.
heater core -no clog it cant i just put a new one in anit even been able to use it cuz over heating
exhuaste flow- checked as well as ran open exhuast as a last resort no go still over heating!
the plastic thermostat housing on these things (god whos idea was that really???) - no clogs check inside an out seal is proper
engine coolant tempture sensor on thermastat housing - ohemed out an check , confirmed with tempture gun its accurate , as well as the boiling water coming out yea it works
unable or sure how to check coolant ports on the block , or how to clean them no idea proper name for them. so if you guys dont have ideas next guess
checked system for gasses from the headgasket possible leaking no gasses coming in
pressured tested system no leaks or loss even when overheaitng pressure remains steady it gets way to high so i shut off car to provent damage !
resovore cap has been replaced to rule that possible leaking pressure it was only $3 for a new one so i did it why not
made sure on every test to make sure air was removed so dont think its that.
the thermstat in the thermastat housing removed from it place in boiling water it opens an closes
my only solution that has worked for me an i have zero idea why ! is dont keep the thermostat in the , thermostat housing. I leave it out after 10mins its gets up to normal operating tempture . (im worried about this because this isnt normal !) i am trying to find the culprut because running it without a thermostat is just avoiding the main issue however with it getting up to temp blowing hot air from heater perfectly an no running issues should i be concerned? or just say screw it no thermostat an keep on going.
i almost forgot i have drained oil 3 times as doing my test to figure out what wrong an checking for coolant in it nope , clean as a whistle.
Things i have checked an confirmed 100% working
radiator- flow rate tested 95% flow , tested with cold an hot as well as checked with my thermstat gun. no cold spots front or back.
water pump - checked flow rate is bassicly 100% , it was changed cuz i was runing out of ideas. so thats fine.
heater core -no clog it cant i just put a new one in anit even been able to use it cuz over heating
exhuaste flow- checked as well as ran open exhuast as a last resort no go still over heating!
the plastic thermostat housing on these things (god whos idea was that really???) - no clogs check inside an out seal is proper
engine coolant tempture sensor on thermastat housing - ohemed out an check , confirmed with tempture gun its accurate , as well as the boiling water coming out yea it works
unable or sure how to check coolant ports on the block , or how to clean them no idea proper name for them. so if you guys dont have ideas next guess
checked system for gasses from the headgasket possible leaking no gasses coming in
pressured tested system no leaks or loss even when overheaitng pressure remains steady it gets way to high so i shut off car to provent damage !
resovore cap has been replaced to rule that possible leaking pressure it was only $3 for a new one so i did it why not
made sure on every test to make sure air was removed so dont think its that.
the thermstat in the thermastat housing removed from it place in boiling water it opens an closes
my only solution that has worked for me an i have zero idea why ! is dont keep the thermostat in the , thermostat housing. I leave it out after 10mins its gets up to normal operating tempture . (im worried about this because this isnt normal !) i am trying to find the culprut because running it without a thermostat is just avoiding the main issue however with it getting up to temp blowing hot air from heater perfectly an no running issues should i be concerned? or just say screw it no thermostat an keep on going.
i almost forgot i have drained oil 3 times as doing my test to figure out what wrong an checking for coolant in it nope , clean as a whistle.