Hey Everyone,
I have posted about the heat problem on my 90 Sidekick and I think I have figured it out. I reversed the heater hoses and ran the engine for about 2 hours with Zerex Radiator flush. I got a bunch more crap out of the system. I refilled the system with 50/50 antifreeze and left the hoses reversed. This morning, for the first time, my $200.00 police auction Sidekick had enough heat that I actually had to turn the blower down. If you are having the same problem, you might try this. The engine temperature is also running a little above what it was. It's nice to be warm!
Junkman