no heat in 97 dakota

12-14-2004, 06:48 PM
hey my dad has a 1997 dakota slt 3.9 V6 and when he bought it the guy that owned it before said he had a 180degree thermostat put in to keep it running cooler in the summer int raffic and what not, well heres the winter and theres no heat what so ever. could it be we have to put a 195 or 200 thermastat back in or does it need a new heater core? any ideas would be appreciated, thanks.

12-19-2004, 05:11 PM
Try to reverse flush the heater. I had this problem last year and when I disconnected the heater hoses and hooked them up to a water hose (low pressure only) all kinds of rust and stuff came out. The difference in heat was amazing. Otherwise its to the parts store for a new heater core. That is not an easy job to perform.

12-21-2004, 02:16 PM
What is the temperature on the temp guage? If it is the normal range, the I would flush the heater core. If it is cold, I would think about replacing the thermostat. check out this first before you go & unhook the heater hoses. Flushig is messy but necessary about once a year.

12-22-2004, 07:33 PM
the temp gauge always stays low, less than halfway, about quater, between cold (just started) and the halfwya mark where on any other car it stays onces its warmed up

12-23-2004, 03:38 PM
Heater core bad.

12-29-2004, 12:09 AM
this is a commen problem, a friend of mine ownes a radiator shop and flushed my core with a flush gun (uses water and compressed air) worked great for 20 min. The engin needs to be flushed, I'v tried thoes low pressure water flush systems and had no luck.

I would sugest you consider a radiator shop to flush the engin

12-29-2004, 03:17 AM
Flush it! Flush it!

12-03-2005, 10:56 AM
Did you ever figure out the problem???? If so what fixed it.

12-04-2005, 01:55 PM
My well used 97 3.9L takes a long time to build up any little bit of heat as well. I think I be trying that reverse flushing method I've read on this forum. What exactly is coming out? Rust? Mineral build up?

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