How would that actually work? If the aux water pump pumps more more volume than the stock pump it seems to me that the stock pump would block the extra flow. Doesn't the Mercedes have a bypass to make that work?


Update:

Ok. I burped the cooling system. Again. That helped with the cooling a bit. The gauge settled down a little, too, and so far no more P0125 codes. Dang. I keep forgetting that air in the system will cause that code. Started freaking out when that came up three times in two days. Sigh.

Tried the air conditioning on Saturday. The extra air flow drops the temps to 200 in nothing flat at idle but still can't drive with the air on. The extra load is just a bit too much.

I've REALLY got to work on getting cool air into the intake. This 90-100 heat wave thing sucks.

Took it up wheeling again on Saturday. Blew the line to the air tank. Idiot at the exhaust shop melted it while doing the down pipes from the manifolds. Seriously. Is it THAT HARD to look at what's behind what you welding?!?!!???

Otherwise, all was good. Temps were down in the 70s so the it was hanging around 200-212 with no problems. Mostly it just parked at 206 and stayed there until we started on the long down hill stretches.

Edward