little heat?

Now that we are getting cooler weather I am noticing it more... Inside my car I have a heat dial 1-5 and 1-2 blow out nothing 3,4,5 blow very little and not to hot either, does anyone know what is causing this, my car is a 2000 Malibu, is this a common thing that happens? Temps are gonna get pretty cold this week and need to get this fixed. Thanks guys :)

I called around and found out it is my fan switch relay so I am gonna go get it fixed, thanks anyway. :rolleyes:

Same car, same problem today, but the heat kicked in a few hours later, so ill just keep my fingers crossed

one other possibility is a clogged heater core, usually caused from gunk in the coolant system building up. luckily it can usually be corrected by doing a "coolant system flush" (not just the radiator) remembering to leave the heater in the on position.

With my 99 Malibu, the fan speed problem was the female plug on the blower motor. I lucked onto that by wiggling the wiring harness in the area of the connector. I replaced the motor and everything is fine. It was definitely not a resistor card problem.

With my 99 Malibu, the fan speed problem was the female plug on the blower motor. I lucked onto that by wiggling the wiring harness in the area of the connector. I replaced the motor and everything is fine. It was definitely not a resistor card problem.

Johnny,

In the past couple of days I had a problem with my blower motor cutting out and/or sputtering. It would go from blowing full force to limited/no output.

I wiggled the harness and got some response from the motor.
I observed that if I pulled back or pushed forward on the connector the motor would run normally.

BUT - the problem wasn't the female plug.
There was a fault somewhere within the motor unit, between the motor and connector for the 12v feed. I temp. fixed this by pulling the connector back and shimming it up with a piece of popsicle stick.
It's too bad you can't service these units.

I'll get a new motor soon. One more thing to add to the junkyard shopping list.

-Mark T.

Yeah, I used the popsicle stick too. That worked for 2 days then quit. So I pulled the connector towards the motor and held the tension with a cable tie. That lasted a couple of days, then quit too. There was too much blood rushing to my head when I'm laying upside down under the dash fiddling with this :) so I broke down and installed a new motor. No further problems.

I'll say again, 'It's too bad you can't service these parts.'
My popsicle stick fix is holding up two days so far with the motor on high all the time [~5*F and I'm missing a rear quarter window]. My numb fingers and twisted back were cursing me for a few minutes today as I replaced the resistor [getting the screw back in on the firewall side is a major PITA!]. I used ACD# 15-8966; Hopefully the new Delco part outlives the car. The motor is now powered 1,2, and 3.

If the popsicle stick fix fails then I think I'm going to try neatly cutting the connector off and repairing that connection if it's accessible. If that fails I'll be able to justify buying a new motor.

-Mark T.