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View Full Version : Ck. Your Crossover Pipe for leaking !!!



warren
06-06-2007, 02:02 PM
Just a heads up.

I have 72K on my 03MM.

Just noticed a coolent leak coming out from around where the crossover goes into block on the passenger side. Glad I was not out of town on vacation. It was leaving some air in system and with all acc's off I could hear water churing thru the heater core as bubbles went past. Leak was dripping down following top of engine back over side of bell housing to driveway 12+oz. Heat would build up fast at WOT. Nice thing about the elec. wtr. pump is it kept things cool to get to dealership at lower RPM.
I have a elec. water pump from Dennis Reinhart.

Both of the # 391533S100 rubber O rings were FLAT and coolent was getting past on pass. side.
Took the FORD dealership just 1hr to fix. I picked up the O rings at another
dealership as they were out of stock. $4.21 ea.

CK your crossover or replace O rings.

Warren

warren
06-07-2007, 01:07 PM
Also forgot to mention --- replace the O ring on the crossover plug on the top. It was flat also.

Warren

marauderthis
10-09-2013, 12:01 PM
What did Ford charge to install the O ring?

fastblackmerc
10-09-2013, 12:54 PM
It's an easy fix.

Remember to properly burp the system when you are done.