radiator fans not working

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sunny - 27 Apr 2004 18:13 GMT

Hi all,
I have a 92 maxima GXE. I noticed my AC not blowing cold air. I took a
look and found that neither radiator fans are working. I believe one
cools the radiator and the other is for the ac. I cant imagine both
fans can go bad at the same time.

I tried the following steps suggested in the Chilton's manual.
- shorted the fan relay and measured the volatage to the fan harness.
It didnt show any voltage coming there.
- checked the fusible links. They looked ok.
- I also checked the ECU code and it flashed 55 (no problem)

I have not done a thorough checkup. But I was wondering if there are
there other ideas/causes for the fans to stop working. Is my ac really
dead or is it because the fan is not working. I dont want to take it
to a mechanic if I can at least diagnose the problem.

Thanks for any tips.

Sunny

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Don't Reply to this address - 27 Apr 2004 18:22 GMT

It sounds like you either need a quick course in basic
electricity/electronics or a friend who has some background in
electricity.

It should be a simple circuit tracing exercise if you have a circuit
diagram.

Without a wiring diagram, it's more difficult and some of us have a hard
time tracing out what is going on without that crutch.

Lacking that you'll have to bite the bullet and have a shop work on it.
Your own time is probably worth something isn't it??? How much time do
you want to spend trying to figure it out when you might be doing
something else that is productive and which you have the experience and
background to do?

> Hi all,
> I have a 92 maxima GXE. I noticed my AC not blowing cold air. I took a
[quoted text clipped - 14 lines]
>
> Thanks for any tips.

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ppointer@nospamindspring.com - 27 Apr 2004 22:49 GMT

> Hi all,
> I have a 92 maxima GXE. I noticed my AC not blowing cold air. I took a
> look and found that neither radiator fans are working. I believe one
> cools the radiator and the other is for the ac. I cant imagine both
> fans can go bad at the same time.

I didn't want to make any assumptions here. Are you sure the motor is
warm enough for the fan to run? I believe for that year, the fan only
runs when the motor needs additional cooling. Of course, if you need
air conditioning, then it's probably warm enough for the fan(s) to run.
What does the temp gauge say?

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sunny - 28 Apr 2004 20:22 GMT

> > Hi all,
> > I have a 92 maxima GXE. I noticed my AC not blowing cold air. I took a
[quoted text clipped - 7 lines]
> air conditioning, then it's probably warm enough for the fan(s) to run.
> What does the temp gauge say?

According to Chilton's they say both fans must rotate at a low speed
when the ac is switched on. This isnt happening

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James M. Blaschak - 28 Apr 2004 03:02 GMT

---snip---

> Thanks for any tips.
>
> Sunny

Does the A/C blow cold air at steady speeds above 35 mph? If so, then
your fans have a problem. If not, your A/C system is probably low on
refrigerant, and neither the compressor nor the fans will run.

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sunny - 28 Apr 2004 20:28 GMT

> > Hi all,
> > I have a 92 maxima GXE. I noticed my AC not blowing cold air. I took a
[quoted text clipped - 11 lines]
> your fans have a problem. If not, your A/C system is probably low on
> refrigerant, and neither the compressor nor the fans will run.

The AC is not blowing any cold air at any speed. I guess I will check
the fans after the car is warm.

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E. Meyer - 29 Apr 2004 15:34 GMT

On 4/28/04 2:28 PM, in article
86e788a1.0404281128.10005bdd@posting.google.com, "sunny"
<rusa7car@yahoo.com> wrote:

>>> Hi all,
>>> I have a 92 maxima GXE. I noticed my AC not blowing cold air. I took a
[quoted text clipped - 14 lines]
> The AC is not blowing any cold air at any speed. I guess I will check
> the fans after the car is warm.

It is unlikely that both fans are bad. If they don't come on when you
switch on the AC, then the problem is in the switching. Either they are not
getting power, or the switch is bad. First thing to check is fuses and
breakers, then connections and grounds.

I think it will be easier to solve the problem of the fans not coming on
with the AC before looking into whether they work when the engine is warm.
Switching on the AC should make the fans come on regardless of engine temp.

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sunny - 29 Apr 2004 18:14 GMT

> On 4/28/04 2:28 PM, in article
> 86e788a1.0404281128.10005bdd@posting.google.com, "sunny"
[quoted text clipped - 27 lines]
> with the AC before looking into whether they work when the engine is warm.
> Switching on the AC should make the fans come on regardless of engine temp.

Thanks. I think it is likely a connection problem. I guess I will
trace it. I am only hoping that the ac not blowing cold air is a
symptom of the fans not coming on and not a problem with the ac
itself. Thank to all who responded.

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