Need help troubleshooting no/low heat
#11
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Mike,
That's pretty much my plan, put in a 180 this morning, but haven't had the chance to check out how much difference it made.
Update: I bled the system, it seems to be heating to around 180 according to the dial. It's a little warmer, but not much. I'll have to give a full flush a try, and failing that maybe get a pcm, one for winter and one for the other 3 months.
That's pretty much my plan, put in a 180 this morning, but haven't had the chance to check out how much difference it made.
Update: I bled the system, it seems to be heating to around 180 according to the dial. It's a little warmer, but not much. I'll have to give a full flush a try, and failing that maybe get a pcm, one for winter and one for the other 3 months.
Last edited by saigashooter; 02-03-2012 at 05:51 PM.
#12
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If the coolant system hasn't been serviced within the last couple of years then flushing it is a good idea, but with temps ranging from -10 to +30 I really don't think you're going to see as much heat as you'd like. Since antifreeze does aid in the radiant transfer of heat then (as previously mentioned) a mix closer to 50/50 may help if there is too much antifreeze in the system now. I also don't think a different PCM (with higher fan activation temp) is going to yield a different result. If your gauge is showing 190° (now 180° with lower temp thermostat) and not going any higher then the coolant is circulating. If the thermostat wasn't opening I'd think you'd be seeing an overheat situation with a continual rise in temp on the gauge. An old 'trick' from yesteryear to improve heating during the Winter months is to partialy block half the radiator with a piece of cardboard so there is less surface area exposed to the cold air. It seems to work well, but if you try it keep a close eye on your gauge and remove the cardboard if you see a significant rise in temp on the gauge. Good luck and let us know what you decide to do and if it improves your heating.
#14
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Did a flush today, and it was still cold in the cabin, followed it up with a back flush and now it is piping hot, even with the 180 t-stat in it.
I only wish I had the facilities to have done it all myself. On the bright side, I don't need to replace the heater core.
I only wish I had the facilities to have done it all myself. On the bright side, I don't need to replace the heater core.
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07-19-2012 12:17 PM