Cold feet and fast idle problems?

[SimplyDaniel]

Hi everyone, I am having a problem with air circulation next to my feet. Even after my truck has reached normal operating temp. , my feet still freeze. Air flow seems minimal while the heater control knob is on floor only, and on floor/dash position. I seem to have ample air flow through the dash, just not down on the floor. While my feet are freezing, up next to my head/shoulders I am roasting. I have heard that this is possibly caused by faulty heater door and you have to tear out the whole dash to fix it. Has anyone else had this problem? Is tearing out the dash something I should do? Any ideas what parts are needed to fix this?



I also seem to have problems with my fast idle. It will begin fast idle sometimes when I come to a stop, even after reaching normal operating temp. I thought that when you apply the brake, it should kick the fast idle off. It doesnt do this. I have an 03, 2500, 4x4, manual 6spd. The only thing I have added to it is I cut a hole in the bottom of the air box and ran a tube down next to the front bumper for some cooler/more air flow, and now use an afe filter. Thanks for any help/ideas.



Daniel

Kansas City, MO

 

[rbattelle]

Well, I'd agree that the problem you're having with airflow is the classic broken blend door problem. There are no "special" tools required to repair it, but indeed the dash does need to come out. Actually, it can be done without removing the entire dash from the vehicle; the dash may instead be pulled back far enough from the windshield to get in there if you're a good contortionist. If warranty remains on the vehicle, you might just have the dealer do it to save yourself some headaches. Otherwise, it's a job you should be able to tackle with basic hand tools and lots of time.



As for the fast idle, someone around here had exactly the same problem - failure to disengage on brake application. Here's one thread about it. I'm not sure what else to tell you... I have no personal experience with the problem.



-Ryan

 

[Gypsyman]

I also seem to have problems with my fast idle. It will begin fast idle sometimes when I come to a stop, even after reaching normal operating temp. I thought that when you apply the brake, it should kick the fast idle off. It doesnt do this. I have an 03, 2500, 4x4, manual 6spd. The only thing I have added to it is I cut a hole in the bottom of the air box and ran a tube down next to the front bumper for some cooler/more air flow, and now use an afe filter. Thanks for any help/ideas.



Daniel

Kansas City, MO

Your high idle will engage depending on the intake temps it is seeing. Actually, it takes into account a handfull of various factors. This is regardless of the engine temp. I have tons of experience with this having just come back down from Alaska.



Your high idle with a 6 speed works just like a manual choke on a vehicle with a carb. It won't kick down by touching the brakes. Just tap the throttle and it will kick down just like the older gassers do.



Richard

 

[macdaddy]

Oh my god!!!!!!!!

I had to replace the blend door's on my wife's Jeep Grand Cherokee. The car has never been the same since. The heater works great but can you say RATTLE #@$%!.



My wife says she doesn't notice it thank god . That was one time I wished I purchased the extended warranty. It cost just under a grand.



And get this, it turned out that DC had used a plastic linkage for the blend doors.



Mac