I have a 95 maxima gxe. I have 2 problems. The first one is that the fan for heat only works at 4 or high position. 1-3 don't work. Second the temp gauge barly makes it to the c on the temp. gauge. Of course there is vaer little heat comming from the fans. I was told that the heat problem will be fixed with a new thermostat. Any ideas would be great thanks

mike

 

Considering you have cool air coming out of your heater, that would be my guess. Since the heater core is basically a miniature radiator with antifreeze flowing through, the thermostat is probably sticking open not allowing the engine to get up to operating temperature therefor messing up everything. As far as your switch is concerned do you have Automatic climate control or is it a manual control? Does it happen also with the A/C position? Let us know.

 

The control is a manual control and only seems to work in the hi position. any advice is great

 

According to my Factory Service Manual it is one of two things. It,s either the blower resistor (the more likely culprit) or it,s your fan selector switch. WAIT HOLD ON! I just did some more checking into your problem and one possible cause for your blower not working properly is that your engine coolant temperature is below 122degrees F. I don,t have a clue why this would cause this BUTT fix your thermostat first and then see what happens next.

 

Ok, I'll help. You spell it "T-E-C-H-N-I-C-A-L",hehe.

Now that we got that out of the way, the fan motor has TWO relays (1 for HI ONLY)(and 1 for 1,2,3). I'm gonna go out on a limb and say thats your problem for the fan motor.

The coolant? Related? Maybe...

1. Check your fluid level/mixture.
2. Temperature sending unit?
3. Blocked/clogged heater core?
4. Thermostat?

If it was me, I would check in that order.



Hope that does it.

Don

[Edited by Don in Texas on 12-18-2000 at 12:21 AM]

 

Yeah, do exactly what dch95 said. Check/replace your thermostat first, then see if the fan works. If not, replace the blower resistor. I tried to say the same thing yesterday but I had trouble posting.

DW

 

There is a resistor assembly mounted on the air duct close to the blower
motor. That part has failed. It is used to control fan speeds 1, 2, and
3. Speed 4 is the maximum blower motor speed, so no resistors are
involved. Replacing the resistor assembly is something the home mechanic
can do. The only tool needed is a Phillips head screwdriver.
The Haynes manual has a good photo of this part on page 3-8.

 

Verify that your cooling system is full. If it is, the next step is to replace the thermostat.

 

I had the same problem and it took a bit of fiddling (and the service manual) to figure it out. The blower motor resistor is under $20 and it is located in the lower right hand corner of the dashboard (on the passenger side, almost directly above your passengers feet). It's held in place by two hex-head/Phillips screws, and it takes every bit of 30 seconds to replace, no exaggeration.
That resistor controls the current that flows to the fan motor. If the resistor fails, then the fan will only work on the higher speeds (in my case in the 3 or 4 position only)