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Switched from 30 psi Cap to 20 psi Cap (archive)

[ Follow Ups ] [ 7-series (E32) Message Board ] [ Msg. Board FAQ ]

Posted by Thomas Meacham on October 14, 2001 at 07:55:54:

Since my 1988 735 still has the Original Radiator $ Original Heater Core and Plumbing, I am always waiting for the day when one of them is going to BLOW. You know, your sitting here on teh board and you see the HELP MESSAGE Coolant on floor. What should I do. Then thier is the defective radiator cap recall. Am I creating a picture in your mins that this cooling system can Ruin Your Day. Well, I decided to Change the Coolant Tank Cap from 30psi (200) to a 20psi (140). The first thing that I noticed is that the Radiator Hose isn't as hard as a rock anymore. Maybe the old cap was not venting. Well, I decided to make this move as the weather is cooling down, I am keeping the old cap in the trunk and will test it for relief pressure as soon as I get a chance.

I just thought I would share this with all my Forum Friends as I know we are always looking for more trouble to get into. I guess my car is running too good now and I am looking for something to do????

Hey, if you read this far, I finally found out what the three digit number ( XX.X ) stamped on the AFM next to the idle bypass screw stands for.

Tom Meacham 1988 735i 107,800 miles

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