Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

Replacing balast resistor

Old Sep 26, 2006 | 04:27 PM
  #1  
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Default Replacing balast resistor

Okay, I'm pulling a 418 code and on suggestion I purchased a new ecc ballast resistor. After doing some searching, I noticed a lot of threads about the actual blower being a culprit causing a brand new resistor to go bad after installation. Here's my symptoms:

> Rec & A/C lights flashing
> Pulling 418 code (well, along with 417, but that's a different issue)
> The blower not strong at all, but after a non-specific period of time, will work


Question is, do I need to replace the blower too? If I do need one, then so be it, but I'm really very strapped cash wise (stupid electric & gas company) and really can't afford a new blower if I don't need one.
 
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Old Sep 26, 2006 | 05:27 PM
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Default RE: Replacing balast resistor

just a shot in the dark if it spins the windings are probably good, if you take the blower motor apart check the bearings to see if it spins freely(oil it maybe) and inspect the brushes to see if they're OK

-Mike
 
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Old Sep 26, 2006 | 09:12 PM
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Default RE: Replacing balast resistor

Those are classic signs of a bad Blower motor.
 
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Old Sep 27, 2006 | 04:42 PM
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Default RE: Replacing balast resistor

Damn. I was hoping I didn't need to replace the blower itself.
 
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Old Sep 27, 2006 | 09:05 PM
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Default RE: Replacing balast resistor

Usually when the blower motor goes bad it pulls way to many Amps and then the A/C computer turns the motor off.
 
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Old Sep 29, 2006 | 12:56 AM
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Default RE: Replacing balast resistor

The A/C system? It does it if the A/C is on or off - last time was when the heater was on. Does that make a difference?
 
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Old Sep 29, 2006 | 09:38 PM
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Default RE: Replacing balast resistor

It will do it anytime you try to use the Blower motor.
 
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