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Climate unit blower replacement

If you hear an unpleasant screeching sound when you turn on your Volvo’s climate control fan, your blower motor is going bad. It is most likely a bad bearing. If you don’t fix it, not only is it annoying, it will eventually ruin the blower resistor on the MCC unit or the power stage on the ECC unit. They are nearly as expensive as the blower, so being proactive and replacing the blower motor will save you time, hassle, and money.


This repair/replacement procedure can take from 1.5 to 3 hours, depending on your level of skill and experience, as well as your model of Volvo.

On Volvo P80 models… 850, S70, XC70 and V70 up to 2000, and some C70s…

If you hear an unpleasant screeching sound when you turn on your Volvo’s climate control fan, your blower motor is going bad. It is most likely a bad bearing. If you don’t fix it, not only is it annoying, it will eventually ruin the blower resistor on the MCC unit or the power stage on the ECC unit. They are nearly as expensive as the blower, so being proactive and replacing the blower motor will save you time, hassle, and money.

Tools

To perform a climate unit blower replacement and replace a blower motor, you will need:

Ozark Lee » 

Problems with the cabin blower seem to be frequent and I am amongst those who had a screeching blower motor. If the blower isn’t repaired or replaced it will ultimately take the blower resistor out on a MCC unit or the power stage on an ECC unit. The blower resistors and the power stage units are nearly as expensive as the blower so preventative maintenance can save some money in the long run.

Procedure

To replace the blower you first need to remove the lower dash panel on the passenger’s side of the car. It is held in place with three T-25 Torx head screws. Once the lower dash panel is removed you will be greeted with the knee bolster which has an SRS sticker on it.
DSC02572.JPGFear not, the knee bolster has nothing to do with the SRS and you can remove it without worry of setting of an air bag. The knee bolster is held on with three nuts. Use a deep 13mm socket and an extension to remove the nuts. You can fight it out now or you can wait until after you remove the glove box.
DSC02573.JPGDSC02574.JPGThe next step is to remove the glove box. You first need to release the retainer arms with a small screwdriver. Next to the glove box door side of each of the arms there is a small hole. Slide the screwdriver into the hole and it will release the arm.
DSC02576.JPGAfter the arms are released you need to remove the 6 T-25 Torx head screws that hold the glove box into the dashboard. Once the screws are removed pull the glove box forward and then press it down on the top so that it can clear the latch brace.

If you have not yet removed the knee bolster that is the next step. It comes off easier with the glove box out since you can smack it from behind to release it from the studs.

At this point you can see the blower and its four T-25 Torx screws that hold it in place.
DSC02577.JPGThere are two screws on the left (high and low) and two screws on the right that are much nearer the center. Before removing the screws you need to remove some of the wiring harness that is anchored on the blower housing. Near the bottom there is a connector that is held in place by the blower itself. That connector needs to be removed from the blower but it doesn’t need to be disconnected. There are a couple of release tabs that need to be pulled back to get it off. I am pointing to it in this picture.
DSC02579.JPGThe wiring harness that mates into the blower from above also needs to be released. It simply pulls out away from the blower. And finally the power connector for the blower itself need to be removed. On the ECC it is the connector with the blue wire and the red wire.
DSC02580.JPGAfter removing the 4 mounting screws the blower slides out for removal. It will take a bit of playing with it to get around the wring harness but once clear it comes right out.
DSC02581.JPGIf you are replacing the entire assembly the replacement would simply slide back in place and – as they say – installation is the opposite of the removal. In my case I tore the blower apart and lubricated it hoping to at least postpone the inevitable replacement for a while.

…Lee

P80 Climate unit blower replacement

For Volvo V70 2001-2007, S60…

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3 Comments

Just finished up taking my Climate Unit Blower out of my 850 GLT (Sweet Roll).

While picking up my gorgeous wife from work, Sweet Roll and I pulled up to the Hospitals’ door. It was just then that a loud and startling noise jolted my senses. At first I thought it was machine gun fire so I ducked and popped my head above and below the dash a couple of times to see if I could locate the direction the reports were coming from. We have had gun play at that location before, hospitals are kind of volatile that way. There was a car pulling from its’ parking space in front of us but that wasn’t the source of the disturbance. The noise intensified and seemed to be coming from within the car. I turned the fan off to the air conditioner to quiet the cabin noise and the noise stopped. It was Sweet Rolls Climate Unit Blower. I might as well been shot in the gut because I knew how much a new one cost $250.00 and that was not installed.

After the initial shock and upon returning to the man cave I went straight to the computer and Matthewsvolvosite.com. I was able to find step by step instructions on how to replace and or lubricate the old blower motor. After reading it several times I felt comfortable enough to attempt the fix on my own.

Now here’s the interesting part. After following the step by step instructions (thank you) I pulled the motor and squirrel cage from underneath the dash (it’s all one unit). Sweet Roll had sucked up a plastic shopping bag into her squirrel cage and that was what accounted for the rat a tat tat of machine gun fire. I removed the bag and the day ended happily ever after. Thank you matthewsvolvosite.com. THE END

I am having a problem with the dashboard ventilation fan on my 1994 Volvo 850 wagon. It will only operate on the highest speed and has recently become even more noisy at the high speed. What do I need to to to fix the fan so it operates quietly at all speeds?
Thanks!
Kevin

looking for directions to troubleshoot and/or replace a Climate Blower in a 1994 volvo 850. It blows a fuse immediately. Thanks, David

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