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Chevrolet Malibu: Problems & Solutions - READ ONLY

3823 messages,  Last post on Oct 12, 2006 at 2:31 PM

You are in the Chevrolet Malibu Forum. Your Hosts are pat & karens

What is this discussion about? Chevrolet Malibu, Chevrolet Malibu Maxx, Electrical, Engine, Sedan


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#3764 of 3823
99 malibu wont start by gloplug
Sep 30, 2006 (8:08 pm)
i have this malibu all of a sudden i drove it to work got off 8hrs later wont start,,went in the next day starts.took it to the shop. they put in a new fuel filter.crank sensor took it to work again drove back home got in to it later went up town just a couple block dont start it turns over but dont want to start... they are stumped.if anybody have any suggestion please help need to get my car running.it seem like it is pumping air but no gas.help me please
#3765 of 3823
paging e2helper, paging e2helper. by 3745
Oct 02, 2006 (7:41 am)
Hi there, a year ago almost to the day I had a problem with the heating on my 04 Malibu. You told me to remove and replace fuse HVAC CTRL(BAT) on the passenger side fuse box. It worked for a while and then died and then on its own started working again the whole of last winter. I thought I had found the problem in a loose plug.
 
I have the same problem again. No heat. I notice that the heater core on this model always has hot water flowing through it. Heat seems to be controlled by the heater door only. There are no water valves.
 
The problem seems to be that the heater door remains in the closed position cutting off hot air to the cabin. When I remove fuses HVAC CTRL (BATT) and HVC CTRL(IGN) and then replace after 10sec and then switch on ignition, I can hear the door and feel the motor running (flapped down glove box and put hand on motor). The door runs to what I assume is the open position for hot air but then returns to the closed position. Does not matter where the temperature control knob is set.
 
In running to the open position for heat, the motor runs slower and slower before returning back to the closed position. When returning to the closed position there is a positive stop as if a limit switch has cut in. Thereafter there is no more action from the door unless I pull the fuses again. Turning the heat control knob has no effect.
 
My feeling is that the limit switch (if there is one) is not working in the open door position and is confusing the BCM. It's such a schlepp to take the car to the dealer. Do you perhaps know what I could do? Could you tell me if there are limit switches and, could I possibly get access to them without tearing everything to pieces? Sorry for the long post.
#3766 of 3823
Annoying Signal Light by poznanman
Oct 02, 2006 (8:12 am)
I have a 2000 Malibu and the noise the comes on when I activate the signal light stays on even after the signal light has been turned off. I'm not sure what to do as the noise has lasted for up to 20 minutes continuously. If anyone has any suggestions it would be most appreciated. I'm not exactly sure how this happened but it is fairly annoying. My "Check Engine Light" came on today, but reading through these posts I now have a good idea on what I need to to about that. Thanks guys.
#3767 of 3823
Re: HVAC problems. [3745] by e2helper
Oct 02, 2006 (2:30 pm)

Replying to: 3745 (Oct 02, 2006 7:41 am)

BCM doesn't have anything to do with this. The HVAC control head itself has the electronics which control the actuators. In this vehicle the controller uses a "pulse count" method for knowing the position of the actuator. I really don't know exactly how it works, sorry. I do know there are only 2 wires going to each actuator and so if the actuator is moving then the wires to it are both connected.
 
There isn't any limit switch.
 
By pulling the HVAC CTRL (BATT) fuse you force the system to lose its memory of motor position so when you reinstall fuse the system goes thru a relearn cycle.
 
There are 3 motors in system. There are 2 on right side of vehicle around glovebox for recirc door and mode control. The temperature door actuator is on left side by the pedals.
 
I don't have suggestions at this point. Sounds like dealer is going to have to look at it and I would suspect they end up replacing the temp door actutor or HVAC control head.
#3768 of 3823
Re: HVAC problems. [e2helper] by 3745
Oct 02, 2006 (3:20 pm)

Replying to: e2helper (Oct 02, 2006 2:30 pm)

Thanks for that. The only motor that runs after fuse is pulled and replaced is the one by the glove box. If you squeeze the glove box and then let it hang down you can see it. I can feel it running by putting my hand on it. Yes, there are only 2 wires going to it. I don't hear any other motors running but will look again tomorrow. They must be using stepping motors for the actuators.
#3769 of 3823
Smell of Burn Oil after Oil Change by sean74
Oct 02, 2006 (7:19 pm)
I had my engine oil changed at jiffylube yesterday. After I drove home I smelt burn oil, and I also found a small amount of smoke after I opened hood. So what happened? Does anybody have such kind of experience. Thanks a lot.
#3770 of 3823
Re: Smell of Burn Oil after Oil Change [sean74] by maxx4me
Oct 03, 2006 (12:58 am)

Replying to: sean74 (Oct 02, 2006 7:19 pm)

Yep, just happened to me yesterday after I changed my own. As the filter is removed, the oil gushes out, splashing on to the exhaust pipe. There should be no problem, and the odor will go away in a day or two.
#3771 of 3823
Re: HVAC problems. [3745] by e2helper
Oct 03, 2006 (5:14 am)

Replying to: 3745 (Oct 02, 2006 3:20 pm)

Actually stepper motors I have seen use 4 wires. Pulse count motors are different and only use 2 wires - although I really can't explain the differences in how they are controlled
#3772 of 3823
Re: Smell of Burn Oil after Oil Change [sean74] by mr_bots
Oct 03, 2006 (7:02 am)

Replying to: sean74 (Oct 02, 2006 7:19 pm)

Oil just spilt on something either on the exhaust from letting the oil out, or somewhere on top of the engine from filling it back up. It'll all burn away. If you don't want to drive with it, just start it and let it idle in the driveway.
#3773 of 3823
Re: HVAC problems. [e2helper] by 3745
Oct 03, 2006 (7:31 am)

Replying to: e2helper (Oct 03, 2006 5:14 am)

Looks like these might be what you are talking about. They are new to me as well. Most probably Delphi supplied them for the new Malibu. More electronics...........sigh......
 
http://www.delphi.com/manufacturers/other/micro/cmos/qpcd/

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