4.0 temp.....
#1
4.0 temp.....
alright fella's i got a delima.......i drove my truck to work this morning to get an alignment done on it today at the local dealership......i started it and let it warm up for about 5 minutes before i left for work......the temp was roughly at 150* when i left.....i turned the heater on and the engine wouldn't get any warmer than 150*........i turn the heater off, and it would slowly climb up to 180*....turn the heater on and back down she slowly crept....
any ideas?
any ideas?
#9
Originally Posted by zabeard
where is the sensor located?
but sounds like tstat or air.
maybe a leak?
btw you coming to the meet now. lol
but sounds like tstat or air.
maybe a leak?
btw you coming to the meet now. lol
wont be able to this weekend....if it was another weekend.....
#10
#11
#12
Originally Posted by lifted97ranger
anyone know how to check for air in the system?
run the truck at idle with the following conditions.
before you start make sure the truck is cold.
remove radiator cap
turn temperature on the hvac to hot
turn it to A/C MAX
turn the fan all the way to high
start the truck
let it idle for 20-30 min
add coolant if needed in the radiator.
seems like odd instructions but that works for me and someone posted that on f150online.com that is where i got the instructions from.
#16
Hello there...
Boy I hate to sound like a know it all. Again. Buuut.. I was not only a water pump engineer for six years.. I also just happen to have spent a little time at the Stant factory in Boston.
The *only* thing in a engine that directly controls the coolant temp is the t-stat. The heatercore does have an effect. But it alone won't adequately cool the motor. Even in northern canada.
A stat will fail in only two ways. It'll get stuck open or closed to some measure because of *debris*. Or the "wax" inside the little brass/tin cup (on the motor side of the assembly) is leaking out. This wax expands and contracts with temps. It's sealed very tightly against a cone shaped pin. As the wax heats it pushes on the cone and opens the stats.
Anyway... sounds to me like your stat is stuck open to some measure. It's effectively allowing coolant to flow at a rate that's keeping the temps at 150. If it were colder out it would run colder. If it were warmer out you'd eventually overheat.
Regards,
Rich
Boy I hate to sound like a know it all. Again. Buuut.. I was not only a water pump engineer for six years.. I also just happen to have spent a little time at the Stant factory in Boston.
The *only* thing in a engine that directly controls the coolant temp is the t-stat. The heatercore does have an effect. But it alone won't adequately cool the motor. Even in northern canada.
A stat will fail in only two ways. It'll get stuck open or closed to some measure because of *debris*. Or the "wax" inside the little brass/tin cup (on the motor side of the assembly) is leaking out. This wax expands and contracts with temps. It's sealed very tightly against a cone shaped pin. As the wax heats it pushes on the cone and opens the stats.
Anyway... sounds to me like your stat is stuck open to some measure. It's effectively allowing coolant to flow at a rate that's keeping the temps at 150. If it were colder out it would run colder. If it were warmer out you'd eventually overheat.
Regards,
Rich
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