72 SIII RUNNING VERY HOT!!!

[xrover]

I think I found the issue... I back flushed the cooling system and refilled the radiator with anti-freeze.

As it heats up, the top hose to the thermostat heats up. Then, the hose from the back of the engine going to the inlet of the SMITH heater heats up.

The outlet hose from the SMITH heater does not heat up at all and, the air isn't heating up either.

I THINK IT MIGHT BE THE HEATER CORE IN THE SMITH HEATER!!!!

Anyone want to throw a monkeywrench in my theory???

Additionally, I was thinking of bypassing the SMITH heater all together. Anyone see a problem with connecting the inlet hose to the outlet hose directly?

[xrover]

I pulled the inlet and outlet hoses to the heater core and hooked up a hose to just the heater core. A large amount of sludge came out.

I think that solved that issue.

I still have a high temp. Just below the red on the gauge.

I am thinking that the gauge isnt working properly. I tested the anti-freeze and it registered 210 degrees. I think the thermostat was rated for 195 degrees.

No anti-freeze leaking out and I let it run for 1 hour after it came to full temp.

Any other suggestions?

[LaneRover]

There is no problem in bypassing the heater. In fact I have a Rover where the heater hose 'mounts' on the engine were just blanked off.

I had some twit at a parts store tell me that there is ALWAYS coolant flowing through the heater and that you cannot shut that off. Of course it is places like that that are constantly asking the year my Rover was made so that they can punch it into their computer, no matter how often I tell them that my truck is not in their system!

Brent

[xrover]

Any ideas on what might be keeping the engine running hot...

Lots of heated up engine noise but, no anti-freeze in the oil.

I am thinking of running it without a thermostat to see how that works.

Should I be concerned about the waterpump at this point?

[badvibes]

no earth-shaking information here,,,

Should I be concerned about the waterpump at this point?

XROVER-

It seems like the waterpump is all you haven't messed with. You could run without a thermostat and that may get the temp down a bit but like someone mentioned earlier that really only addresses a symptom not the problem. If it was my truck I probably would run without a t-stat while I got ready to pull the waterpump and at least check it and probably go ahead and replace it. Out here in NM I have to plan repairs in advance as everything has to be shipped via pony express. When your truck is currently your daily driver one can't afford too much down time.

J

[xrover]

Good deal... I was just about to go and take the bloody thing out.

Thanks to all...

[xrover]

Running at a good temp now that the thermostat is out.

Just ordered a water pump kit and I have another radiator.

Plan on installing them by tomorrow. Thanks for the help...

[xrover]

reset the timing and installed a new thermostat. No issues now. Thanks...