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How to Replace Heater Blower Motor with Fan Cage 1979-2011 Mercury Grand Marquis
Created on:
Tools used
Socket Extensions
8mm Socket
Ratchet
1. Removing the Blower Motor
Remove the top two 8mm bolts from the blower motor
Disconnect the blower motor wiring lead
Pull the wiring aside
Remove the lower two 8mm bolts from the blower motor
Disconnect the tube that runs from the motor to the firewall
Pull the blower motor up and out
2. Installing the New Blower Motor
Put the gasket on to the blower motor
Line up the hole on the blower motor bracket with the line-up stud
Push the blower motor down into place
Make sure the gasket is lined up correctly
Start one of the top bolts by hand
Start the two lower bolts by hand
Tighten the lower two bolts
Remove the top bolt
Put the wiring harnesses into place
Insert the two top bolts
Reconnect the blower motor wiring lead
Reinstall the tube that runs from the motor to the firewall
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video we're going to show you how to replace the air conditioning and heater blower motor. If your blower motor is going bad you'll usually hear kind of a moaning or groaning noise that changes pitch with the fan speed. It's a pretty easy operation; the only thing you'll need is an 8mm socket with a ratchet and an extension.
The fan motor is located right here in the engine compartment on the passenger side. It's held in by four bolts: one there, one further down, one right over here, and then another one further down. Use an 8mm socket and I'm going to use an extension for the top two. I'm going to remove the top two, which also moves this bracket and wiring out of my way. Fast forward as I remove those two bolts. Also, here's where your lead attaches in. You just pull this clip up and I'll pull the lead off and then move this wiring up and out of your way. Then I take my extension off for these two lower ones. Right down in and remove the two lower bolts. Once all those bolts are out, pull your wiring out of the way. You'll need to pull the tube way down low, pull that tube off the firewall. Lift the fan motor up and pull it right out.
Here's a new motor from 1A Auto. We'll put the gasket on. There's a little hole here and there's a line up stud here, so put the motor down in just like you took it out. Then line up the line-up stud and put it through the gasket. Now put the motor in; drop it down and you can get that on there. The gasket may get a little bit out of shape here, so you have to push it in a little bit. Let's see here. I've got my gasket lined up. I'm just going to start this one in first because it's easy to see; now I'll start putting my lower ones in. Start my other lower one in. Okay, I put the gasket and the motor on that line up stud and then pushed the gasket around to line it up. I started the top one first just to hold things in place. Then I started the lower ones and now I'm tightening the lower ones up. I'll fast forward through the rest of it as I tighten up the two upper screws. Make sure you re-plug in your lead and reinstall the tube that goes from the motor to the firewall.
We hope this helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
HMA88796
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★★★★★March 6, 2025
Fan Literally exploded
Worked great for 2 weeks with no weird noises, then the fan blade exploded sending pieces all in the housing (found out the next day when I took it apart) heard a loud bang from inside the dash as I was driving then lost all air flow. Happened when I was 4 hours from home during bad weather when I needed heat and defrost. Had to take my sweater off to have something wipe the windshield every few minutes, and froze my rear off, hours of sketchy driving. Very unhappy with this product...hours of wasted time and frustration. Currently trying to vacuum all the pieces out from the housing. Dented the evaporator coils too.
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WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
