My 2004 Max doesn't heat up while at idle. Works fine when the car is driving or RPM's are up when revved up. Anyone else have this issue before?

 

Low coolent/air bubble

 

do you hear water rushing underneath the passanger seat? i agree with low coolant/air bubble.

 

I'll have to take a look and get back to ya guys, but thanks for the advice, hopefully its something as simple as that

 

low coolant or restriction in system...

 

Have you ever flushed your cooling system? It could be a blocked heater core. I'd start with a good flush. If you go to NAPA, they have a cleaner that you can add to the radiator prior to doing the flush that will help clean it out, I can't think of the name off of the top of my head.

 

This is a fairly common problem. There is a specific TSB out for this.

CM

 

I'm having the same problem and I also hear water moving. What should I do

 

Check coolant level. Mine was doing the same. It was low I added coolant. Drove it around. Added some more. Problem solved.

 

try checking the thermostat, if it sticks open then u wont have any heating up. EG..upper and lower radiator hose same temp

 

don't forget to burp the radiator... lol