Question about 1998 Jeep Wrangler
My 98 jeep wranglers heater will not work. all it does is blow cold air even after the engine heates up. what do i do?
Try this disconnect the heater hoses from the heater core use a hose to backflush the core. Then reconnect and try again.
Posted on Oct 18, 2008
Had the same problem with my 98 Wrangler. I flushed the heater core several times with no results. Air coming from the heater is warm but not hot like it should be. So I removed the heater hoses and filled the core with PB Blaster, let it soak for 2 hours and then blew it into a gallon jug with 40 PSI of air pressure. I filtered the fluid thru a rag and then poured the liquid back into the core and blew it out in reverse a couple of times. A lot of rust and junk came out in the gallon jug. It was easy to tell when the core was clear because the hoses stopped expanding when I applied the air pressure. I put it back together and now the heat is very hot, like it was when it was new.
Posted on Mar 04, 2015
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Posted on Jan 02, 2017
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