sprinter10 Posted November 20, 2010 Author Report Share Posted November 20, 2010 Buy an AC Delco cap. According to the FSM for 94 the cap is 15 psi It is not necessary to see how much pressure the system generates, you want to see how much pressure the cooling system HOLDS, maybe you are saying the same thing The cap is the reason why it was not holding pressure. If your radiator is leaking, the new cap will make it worse. There are no leaks anywhere I found one hose that was loose that was leaking when I changed the thermostate and the radiator cap was not holding pressure and leaking after 8 minutes of it running. I just drained the system out and filled with dexcool have it idling now for 11 minutes and sofar so good. It is ideling at 5/8 degrees tho and both fans are on... Was ideling at 1/2 before with no fans with mostly more water in the system. Since I only get just over a gallon out when I drain it I put in strait dexcool to be safe. Link to comment Share on other sites More sharing options...
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