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Climate Control problems help please...

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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utvol1984
Posts: 40
Joined: 10 January 2006
Year and Model:
Location: Salisbury NC

Climate Control problems help please...

Post by utvol1984 »

I have a 93 850 GLT and the climate control unit has begun flashing the AC and Recirc lights whenever I start the car and turn the fan control slide control on. Also the fan does not come on at all on any setting. Here's what I've done:

Pulled codes 211, 414, and 418. Haynes manual says 211 means "Drivers side damper motor position sensor open circuit or shorted to 12 volts." It says 414 is drivers side interior temp sensor inlet fan seized. Last, it says 418 is "no control signal to blower fan power stage." Easiest thing to tackle was the driver's side inlet fan so I pulled it, took it apart, cleaned it and it spins freely - also plugged it back in and it spun up immediately.

Everything I've read on here indicates fan motor and/or fan motor resistor could be bad. I have both off of another 93 GLT and am thinking I should probably try them but here are my questions. The donor car has 177,000 miles - is there any way I can test the resistor and fan before going to all that work to put them in? Should I just buy new ones? Should I replace the damper position motor too? (That looks REALLY unpleasant to do)Thanks for any help at all!

Kris in NC

95autoturbo
Posts: 73
Joined: 15 May 2005
Year and Model:
Location: ST Charles MO

Post by 95autoturbo »

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Last edited by 95autoturbo on 13 Mar 2006, 16:33, edited 1 time in total.
yes......It is an 850!

95autoturbo
Posts: 73
Joined: 15 May 2005
Year and Model:
Location: ST Charles MO

Post by 95autoturbo »

I'm guessing all the codes are comming from one of them......I say, just replace them both, my damper has broken too.....so I just rigged it to get fresh air and I have no problems.......
yes......It is an 850!

utvol1984
Posts: 40
Joined: 10 January 2006
Year and Model:
Location: Salisbury NC

Post by utvol1984 »

Thanks for the input - I think that's what I'm going to do. Although as these wierd things tend to go - it's working again! Arrgghhh!! these things drive me nuts. Anyway thanks again - I think I'll just leave it alone as long as it works then replace at least the resistor if it messes up again.

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