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94 Fleetwood Brougham
7,602 Posts
Re: Replacing Heater Core 91 DeVille—Any advice?

Out of curiosity, I flushed my core in my 91 (couldn't get my arms into get to the hoses to replace, which was my original plan) and got it opened up (see my thread on how I did it in the tech forum) and was measuring 160-165F out of the floor heater duct with a candy thermometer (don't let the wife see!).

I am curious what a new one pumps out. I ran it on 90 to max it, it was 20 degrees or so out, maybe 30 (was fighting freezing point early on, then it froze)
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