Driver's side heat not working.

1475 Views 11 Replies 4 Participants Last post by Ranger, Nov 21, 2005

daddydg

Discussion Starter · Nov 17, 2005

OK, I promise, last question fo rtonight.

It started getting a bit cold here in California so I turned on the heater for the first since I bought the car. It blows cold (outside) temp air out of the driver's side, but the passenger's side gets a little warm.

I'd checked the heat when I bought the car a few months ago and it was fine. I've read all the posts on this site. I can see the passenger side acctuator moving (behind the little panel in the glovebox). I can't find the driver's side acctuator.

When I put the heater to defrost for the windshield hot air blows out of the passenger's side of the vent on top of the dash, but nothing on the driver's.

I should note that when I pulled codes it showed B1340 (Air Mix Door One Movement Fault) and B1341 (Air Mix Door Two Movement Fault). What do they indicate exactly and when should I go looking for the problem.

Also, I saw a post about a guy who's heater core became clogged by BarsLeak Gold. I recently had my radiator flushed and I add the Bars Leak Gold Label powder based on recommendations from this site. Should I flush the heater core? If so, how?

Are there other things I should be checking.

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turbojimmy

· #2 · Nov 17, 2005

daddydg said:
I should note that when I pulled codes it showed B1340 (Air Mix Door One Movement Fault) and B1341 (Air Mix Door Two Movement Fault). What do they indicate exactly and when should I go looking for the problem.

Those could be your problem right there. The doors are not moving as the IPM is commanding them to. The driver's mix actuator should be exactly opposite the passenger mix actuator on the plenum.

Now precisely what's wrong and how to fix it, I dunno. I know that the stealer can use the Tech2 to calibrate the doors but if the actuator motor(s) has gone bad then it (they) will need replaced.

Don't mess with the heater core. If you have any warmth from anywhere it's fine.

Jim

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