TJ overheating with AC on
12-29-2005, 08:43 PM
#1
Guest
Posts: n/a
TJ overheating with AC on
I have an 03 TJ 4.0L engine. on the trail sometimes even in traffic
when i have the AC on the my temp starts to go up. it does not do this
without the AC on. any ideas on where to start at? usually i just
kill the AC and temp goes back to 210. but i live in hawaii and i like
to wheel with the AC on :)
when i have the AC on the my temp starts to go up. it does not do this
without the AC on. any ideas on where to start at? usually i just
kill the AC and temp goes back to 210. but i live in hawaii and i like
to wheel with the AC on :)
12-29-2005, 08:58 PM
#2
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Posts: n/a
Re: TJ overheating with AC on
kodiakid did pass the time by typing:
> I have an 03 TJ 4.0L engine. on the trail sometimes even in traffic
> when i have the AC on the my temp starts to go up. it does not do this
> without the AC on. any ideas on where to start at? usually i just
> kill the AC and temp goes back to 210. but i live in hawaii and i like
> to wheel with the AC on :)
I would suspect your radiator passages might be blocked or do you have
a large winch or lights blocking flow? Could also be a fan clutch failing
--
DougW
> I have an 03 TJ 4.0L engine. on the trail sometimes even in traffic
> when i have the AC on the my temp starts to go up. it does not do this
> without the AC on. any ideas on where to start at? usually i just
> kill the AC and temp goes back to 210. but i live in hawaii and i like
> to wheel with the AC on :)
I would suspect your radiator passages might be blocked or do you have
a large winch or lights blocking flow? Could also be a fan clutch failing
--
DougW
12-29-2005, 08:58 PM
#3
Guest
Posts: n/a
Re: TJ overheating with AC on
kodiakid did pass the time by typing:
> I have an 03 TJ 4.0L engine. on the trail sometimes even in traffic
> when i have the AC on the my temp starts to go up. it does not do this
> without the AC on. any ideas on where to start at? usually i just
> kill the AC and temp goes back to 210. but i live in hawaii and i like
> to wheel with the AC on :)
I would suspect your radiator passages might be blocked or do you have
a large winch or lights blocking flow? Could also be a fan clutch failing
--
DougW
> I have an 03 TJ 4.0L engine. on the trail sometimes even in traffic
> when i have the AC on the my temp starts to go up. it does not do this
> without the AC on. any ideas on where to start at? usually i just
> kill the AC and temp goes back to 210. but i live in hawaii and i like
> to wheel with the AC on :)
I would suspect your radiator passages might be blocked or do you have
a large winch or lights blocking flow? Could also be a fan clutch failing
--
DougW
12-29-2005, 08:58 PM
#4
Guest
Posts: n/a
Re: TJ overheating with AC on
kodiakid did pass the time by typing:
> I have an 03 TJ 4.0L engine. on the trail sometimes even in traffic
> when i have the AC on the my temp starts to go up. it does not do this
> without the AC on. any ideas on where to start at? usually i just
> kill the AC and temp goes back to 210. but i live in hawaii and i like
> to wheel with the AC on :)
I would suspect your radiator passages might be blocked or do you have
a large winch or lights blocking flow? Could also be a fan clutch failing
--
DougW
> I have an 03 TJ 4.0L engine. on the trail sometimes even in traffic
> when i have the AC on the my temp starts to go up. it does not do this
> without the AC on. any ideas on where to start at? usually i just
> kill the AC and temp goes back to 210. but i live in hawaii and i like
> to wheel with the AC on :)
I would suspect your radiator passages might be blocked or do you have
a large winch or lights blocking flow? Could also be a fan clutch failing
--
DougW
12-29-2005, 10:14 PM
#8
Guest
Posts: n/a
Re: TJ overheating with AC on
kodiakid did pass the time by typing:
> i do have a winch on the front but it did this before the winch went
> on.
Next up, check the fan clutch.
To check a viscous fan, turn off the engine after it
has reached operating temperature and rotate the fan
manually, and you should feel resistance. If it spins
freely then the clutch is dead and needs to be replaced.
Another possibility is a sticking thermostat but usually
that causes overheat all the time.
--
DougW
> i do have a winch on the front but it did this before the winch went
> on.
Next up, check the fan clutch.
To check a viscous fan, turn off the engine after it
has reached operating temperature and rotate the fan
manually, and you should feel resistance. If it spins
freely then the clutch is dead and needs to be replaced.
Another possibility is a sticking thermostat but usually
that causes overheat all the time.
--
DougW
12-29-2005, 10:14 PM
#9
Guest
Posts: n/a
Re: TJ overheating with AC on
kodiakid did pass the time by typing:
> i do have a winch on the front but it did this before the winch went
> on.
Next up, check the fan clutch.
To check a viscous fan, turn off the engine after it
has reached operating temperature and rotate the fan
manually, and you should feel resistance. If it spins
freely then the clutch is dead and needs to be replaced.
Another possibility is a sticking thermostat but usually
that causes overheat all the time.
--
DougW
> i do have a winch on the front but it did this before the winch went
> on.
Next up, check the fan clutch.
To check a viscous fan, turn off the engine after it
has reached operating temperature and rotate the fan
manually, and you should feel resistance. If it spins
freely then the clutch is dead and needs to be replaced.
Another possibility is a sticking thermostat but usually
that causes overheat all the time.
--
DougW
12-29-2005, 10:14 PM
#10
Guest
Posts: n/a
Re: TJ overheating with AC on
kodiakid did pass the time by typing:
> i do have a winch on the front but it did this before the winch went
> on.
Next up, check the fan clutch.
To check a viscous fan, turn off the engine after it
has reached operating temperature and rotate the fan
manually, and you should feel resistance. If it spins
freely then the clutch is dead and needs to be replaced.
Another possibility is a sticking thermostat but usually
that causes overheat all the time.
--
DougW
> i do have a winch on the front but it did this before the winch went
> on.
Next up, check the fan clutch.
To check a viscous fan, turn off the engine after it
has reached operating temperature and rotate the fan
manually, and you should feel resistance. If it spins
freely then the clutch is dead and needs to be replaced.
Another possibility is a sticking thermostat but usually
that causes overheat all the time.
--
DougW