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

Thread Tools
 
Search this Thread
 
  #1  
Old 09-26-2006, 04:27 PM
Dads850's Avatar
Senior Member
Thread Starter
Join Date: Aug 2006
Location:
Posts: 178
Likes: 0
Received 0 Likes on 0 Posts
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.
 
  #2  
Old 09-26-2006, 05:27 PM
MikeySq's Avatar
Senior Member
Join Date: Sep 2006
Location: Mississauga, Ontario Canada
Posts: 265
Likes: 0
Received 1 Like on 1 Post
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
 
  #3  
Old 09-26-2006, 09:12 PM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
Default RE: Replacing balast resistor

Those are classic signs of a bad Blower motor.
 
  #4  
Old 09-27-2006, 04:42 PM
Dads850's Avatar
Senior Member
Thread Starter
Join Date: Aug 2006
Location:
Posts: 178
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Replacing balast resistor

Damn. I was hoping I didn't need to replace the blower itself.
 
  #5  
Old 09-27-2006, 09:05 PM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
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.
 
  #6  
Old 09-29-2006, 12:56 AM
Dads850's Avatar
Senior Member
Thread Starter
Join Date: Aug 2006
Location:
Posts: 178
Likes: 0
Received 0 Likes on 0 Posts
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?
 
  #7  
Old 09-29-2006, 09:38 PM
tech's Avatar
Administrator
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351
Likes: 0
Received 40 Likes on 38 Posts
Default RE: Replacing balast resistor

It will do it anytime you try to use the Blower motor.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Evo 850
Volvo 850
6
11-24-2007 05:25 PM
robsons
Volvo S40
2
11-16-2007 01:05 AM
85 760Turbo
New Members Area
2
02-16-2006 10:13 PM
85 760Turbo
Volvo 240, 740 & 940
1
02-13-2006 09:52 PM



Quick Reply: Replacing balast resistor



All times are GMT -5. The time now is 02:34 PM.