Need Help - F24 Overheating

[normde2001]

What you saw was just what occurs when the tstat opens. Whatever you do, don't blow out the fins, (easiest), or back-flush the system, (2nd easiest),:confused3: which will clean out the block as well as the radiator. Good luck.

 

[winston1]

2 grommets with studs under the radiator. 2 heavy wire brackets that brace at the top on each side.

 

[clemsonfor]

What you saw was just what occurs when the tstat opens. Whatever you do, don't blow out the fins, (easiest), or back-flush the system, (2nd easiest),:confused3: which will clean out the block as well as the radiator. Good luck.

You cant flush a clog out. They need to have the side tanks removed and each tube "rodded" out to remove eveything.

I had a radiator that would run boarder line hot on an S15 i had and each time the thermostat opened it would shoot way up when the motor was first started. Took it to an old school radiator shop and they rodded it out and then repainted it and it was as good as new. The truck ran cooler for the life of it.

 

[normde2001]

"You cant flush a clog out."

I have done it several times over the years with a back-flush. If the system will take the full force of the water pressure it is clear.

 

[clemsonfor]

well you had good luck i guess.

 

[adt2]

Noah's flood v2.0 has finally subsided around here, so I'm headed over there today to try to pull the radiator. I'm still unclear on how to backflush - is that something I should do myself, or do I just need to find a radiator shop?

 

[clemsonfor]

By back flushing it usually means to put the hose in the radiator hose hole on the bottom and let it run over out the top till clear.

I have done similar things by outting the hose in the radiator cap hole and taking the top hose loose and letting it run till clear. THe tractor suck coolent out of the bottom and the crud water that goes thoough the block and radiator is expelled out of the top hose onto the ground. the hose turbulance will sometimes stirr up more crud.

The also make commercial radiator "flushes" that you add to the radiator and run for some time based upon instrctions and then fill again and drain or something. It helps break scale off with chemicals. I have heard it can bust loose and cause leaks in older weaker radiators. i would try all of the above and then pull if if none of that really works.

 

[adt2]

By the time I saw the post above, I'd already pulled the radiator. I just dropped it at a local rebuild shop to be cleaned. Guy said it looked like it was in pretty good shape but you never know until you take it apart.

I guess I'll know for sure tomorrow.

 

[clemsonfor]

Thats fine. No big deal. HOnestly professional cleaning is best.

 

[normde2001]

By back flushing it usually means to put the hose in the radiator hose hole on the bottom and let it run over out the top till clear.

I have done similar things by outting the hose in the radiator cap hole and taking the top hose loose and letting it run till clear. THe tractor suck coolent out of the bottom and the crud water that goes thoough the block and radiator is expelled out of the top hose onto the ground. the hose turbulance will sometimes stirr up more crud.

The also make commercial radiator "flushes" that you add to the radiator and run for some time based upon instrctions and then fill again and drain or something. It helps break scale off with chemicals. I have heard it can bust loose and cause leaks in older weaker radiators. i would try all of the above and then pull if if none of that really works.

That is Not a back-flush. Normally the water and trash flows through the rad, top to bottom, out the bottom hose and up through the block , out the upper hose and back into the radiator. You need to disconnect the upper hose stuff a garden hose into the upper hose and seal with shop rags, turn on the water and let it push the trash back out the open cap inlet, same way it came it. If it will take the full force of water and runs clear, both the block and radiator are clean. A radiator shop won't clean your block.