<E30> Re: Intermittant Fan Speed Problem

[poffen@xxxxxxxxxxxxxxxxxxxx (Russ Poffenberger)]

> Date: 15 Sep 98 09:04:40 PDT
> From: SMILLER@domain.elided
> Subject: <E30> Intermittant Fan Speed Problem
> 
> My wife drove my car over the weekend while I used her Durango to
> tow a trailer and stuff.  Monday on my way to work, I discovered that the
> heater fan only worked on the "high" setting, but not the other settings. 
> My first thought was, I wonder why my wife didn't say anything about
> this?  But maybe it wasn't a problem for her.  Whatever, no problem, I
> figure, it's just the resistor pack, I can replace it, and in the mean time,
> if I
> really need the fan, I'll just put it on "high" and turn the stereo up real
> loud
> to compensate for the noise.
> 
> On the way home I turned on the fan and discovered that all 4 speeds
> work now.
> 
> So what would cause this intermittant fan speed problem?  If a resistor
> was fried, it would either work or not work, right?  Maybe a bad
> connection?  Which connection should I check, at the switch, at the
> resistor pack, or somewhere else?  Has anyone out there had this
> problem before?

Yes, many times it isn't a fried resistor, but poor connections on the resistor
board that make them intermittent. I fixed mine by soldering the loose
connections.


- --
Russ Poffenberger               Engineering Specialist
Schlumberger Technologies ATE   DOMAIN: poffen@domain.elided
1601 Technology Drive		CIS:	72401,276
San Jose, Ca. 95110             Voice: (408)437-5254  FAX: (408)437-5246

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