Your heater core is pluged
Take heater hoses off and flush heater core these vehicles are known for this problem might have to do this every year
Flush the radiator/heater core. I had the same problem, flushed it two weeks ago, and now i have heat like ive had in all my previous vehicles. Couldn't believe it took me a year to narrow down what i hadnt done, did it, and i cant stop the hot air now its awesome on cool mornings of late
Les, it sounds like your blend door actuator has failed, it is a small vacuum operated diaphram up under the dash that controls a flapper that switches between the cool air and heated air. Good news is that it is an inexpensive part, bad news is pulling the dash out to get to it.
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a/c works great, only cool air comes out when heater is on, will not heat up at all. , how much does this blend actuator run?
Hi all I have the same problem 2000 jimmy flushed rad twice replaced a bunch of parts except the accuator its gotta be blows warm on lowest fan option then nothing but luke warm air if you turn up the fan
my 2001 Jimmy does the same thing, warm heat if blower is on low, barely luke warm heat if its on high.....help please
What does it cost to replace the actuator?
The heat in my Jimmy stopped working a few months ago out of the blue. Literally worked one morning and not the next. Blows out only cold air whether on low or high. I haven't taken it in yet for a diagnosis because I haven't really needed the heat (live in AZ).
I have the same problem. I pulled apart my whole dash and replaced the heater core and still no heat! I am convinced that it is the actuator. I have fixed everything else. I have had nothing but problems with this car and ready to give in the towel..!!!!
Just got through the winter with No Heat in a 2008 grand marquis. Both the heat and A/c died at the same exact time and the cigarette fuse was the only thing I found that was blown of the fuses I can check. A/c when on seems warmer then the heater supposed to be. at start of the heat you can fell Hot air for a sec and then it goes cool. any ideals?
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