Quote:
Originally Posted by FarmBoyBill
HJ How I supposed to keep the rpms at 1200 while Im out putting a cardboard in front and then throwing water into the fan after it heats up?n By the way, AC is shot. People who had it bewfore me messed up the plumbing to the ac for whtever reason. They had had problems with it, and I could see that they had poured a bunch of sealent at the rad mouth
|
Unless yours is a "drive by wire" system with no throttle cable, you just use small block wood or some baling wire to hold throttle open a bit. If you had drive by wire with no mechanical linkage, then you would have to figure some way to put bit constant pressure on the gas pedal in the cab.
And no you dont throw water in the fan. The fan draws air through the radiator. You first block the radiator so engine heats quickly and air around fan clutch gets hot, fan clutch engages so you hear the roar. Then you remove what ever you block radiator with and spray some water on front of radiator. This should quickly cool radiator and air back of radiator enough that the fan clutch disengages and the roar stops. You are just tricking the fan clutch into first engaging at basically fast idle, then disengaging at same fast idle. Nothing complicated.
Driving 5 miles down the road while you are in the cab doesnt let you hear the fan clutch engage and disengage. Now do you understand. Sitting in cab, driving down road, you have no way of knowing if a mechanical fan clutch engages or no. You need to be close to fan without the engine just turning fast enough to quickly heat things up.
Unless things have changed on newer trucks (yes '97 is newer far as I am concerned) the air conditioner is not connected to the radiator. If they put goop in radiator, then they had either radiator leak or they had bad head gasket or cracked head/block. Putting goop in radiator would have no effect on air conditioner.
Most of the "radiator sealer" stuff will PLUG A RADIATOR or at best reduce its cooling capacity. The only additive I've seen that actually works is sodium silicate ("liquid glass") and it is incompatible with anti freeze. You use it and you have to remove all propolene glycol antifreeze, rinse out residue and fill with plain water. then add the sodium silicate. Run it until leak stops and preferrably longer if no danger of water freezing overnight, then drain everything and replace with proper antifreeze mix. Sure you have heard of "glassing an engine", its very old technique. And it works long term. Sodium silicate is also referred to as egg glass or water glass, though havent heard those terms for long time.
Since its obvious the previous owners used radiator sealer in abundance, my theory that you are over heating is from plugged radiator is far more likely. Unless you need to use the sodium silicate treatment, dont put anything in your radiator except antifreeze and water in proper ratio. Anything else WILL PLUG YOUR RADIATOR and probably not provide more than temp fix to any leak. Modern radiators cant be disassembled and cleaned so you would then have to buy another radiator.
Oh if you do have to buy a new radiator, before installing it, rinse out engine water jacket and heater core with plain water. That radiator sealer stuff will still be in there, dont want it to find its way into new radiator.
