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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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Old 10-18-2011, 07:50 PM
JStout JStout is offline
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Location: Albuquerque, NM
Join Date: Oct 2011
Posts: 1
Mein Auto: 1999 323Ci
Replacing final stage unit didn't work, now what?

Ok, my heater and AC keeps cutting in and out, pretty much all the time now. I replaced the final stage unit (aka blower motor resistor) and that still didn't fix the problem! Does anyone have any other suggestions? I have a 1999 323i convertible.
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Old 10-20-2011, 06:28 AM
edsmax's Avatar
edsmax edsmax is offline
I shift my own gears!
Location: Johnston, RI
Join Date: Jul 2003
Posts: 299
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Mein Auto: Orient Blue 01 330i Sport
Try the E36 section...
Mods: BMW OE Clear corners, OE aluminum ///M shift knob, GruppeM CAI, UUC Clutch stop
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ac, blower motor resistor, final stage unit, heater

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