Jeep Engine Heating Issue

[lupinsea]

I think I may have figured out why my engine was running on the warm side this last summer. . .

My water pump recently sprung a leak and in the process of fixing it I figured I'd pull the radiator, too, and give it a good cleaning out side of the rig. Turns out that was a good idea. The lower 1/4 of the vanes on the radiator were packed full of mud to the point I couldn't see any light through the fins. And on the front side was some odd collection of debris. And that was behind the "radiator" element for the A/C system (which I'll also be cleaning out).

The good news is that after 9 years the interior of the radiator, block, and rest of the cooling system is VERY clean. No nasty build-up.

The back side of the TJ's radiator.




Lower corner of the back side of the radiator.




Wad of debris on the front of the radiator (this was behind the A/C "radiator")




Oh, and a shot of the front of the engine, sans radiator and water pump.

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