Topic: Hot Runner

[WhiteRhino]

My son has a 85Runner & on the last run started overheating. Took out thermostat, didn't help.
Any choices besides, head gasket .... water pump ....... or fan clutch
If its the fan clutch, can it be repaired ?

[Duffil]

if it is the fan clutch, you just replace it Check under the oil cap for a milkshake, check to see if you are losing coolant(not leaking).

to check the fan clutch, spin it by hand, it should NOT go 1 full turn.  If you're not sure after that, get the thing up to temp, (use a rag and be VERY careful here) try to stop the fan.  If it stops, it's junk.  If it chews on your fingers, its ok.

[WhiteRhino [OP]]

if it is the fan clutch, you just replace it Check under the oil cap for a milkshake, check to see if you are losing coolant(not leaking).

I was told the dealer sold the silicone gel & it could be repaired (I thought it sounded stupid)

[FIREBALL]

Also check for cool spots on the radiator. It's old enough that your radiator could be gettin plugged up.

[WhiteRhino [OP]]

Also check for cool spots on the radiator. It's old enough that your radiator could be gettin plugged up.

New Radiator with extra cores

[rick80]

to check the fan clutch, spin it by hand, it should NOT go 1 full turn.  If you're not sure after that, get the thing up to temp, (use a rag and be VERY careful here) try to stop the fan.  If it stops, it's junk.  If it chews on your fingers, its ok.

this might be the stupidest thing ive heard today

[Duffil]

is that right?  whatever...

[Trunkz]

Duffil is your nickname stumpy?

[Duffil]

this might be the stupidest thing ive heard today

if you are dumb enough to hurt yourself doing this, TAKE THE TRUCK TO A MECHANIC. 

[wa4x4]

Or just try and catch it with the rag. Don't put your fingers directly in the spinning blade, come from up top.

[BLACKDOG]

Or just try and catch it with the rag. Don't put your fingers directly in the spinning blade, come from up top.

I think thats what he meant

[Brandon]

I wouldn't attempt that, if the thing spins.. it spins..  While you are driving the fan is not really doing anything anyway.

If you really want to test the thing take it off and test it right, check your manual - I believe you can "water" test them but don't hold me to it.

[N.S.Runner]

How long ago did you put the new rad in? I it possible that the system became air locked during the instillation.

[BLACKDOG]

I wouldn't attempt that, if the thing spins.. it spins..  While you are driving the fan is not really doing anything anyway.

If you really want to test the thing take it off and test it right, check your manual - I believe you can "water" test them but don't hold me to it.

Doing things right?  thats not any fun  

[Duffil]

you guys can say what you want.  Like I stated earlier, if you are dumb enough to get hurt by doing that, go to a mechanic.  I am done here.

[WhiteRhino [OP]]

Thanks for the advice
seems to me, my sons Runner isn't the only thing with overheating problems
Looks like a new fan clutch did the trick for him