How big a job, how many hours?

[Toploader]

On my '86 Tudor GM (5.0)........replaced the blower motor resistor.........same problem, blower motor starts and stops, then slows down then runs.........this while a/c is on........also when blower stops for 60 seconds or so I smell prestone.........if I have to pull the blower motor........what is involved, and should I also pull the heater core as that seems to be on its last legs?

[VicCrownVic]

When I replaced the blower motor on my '89 it was just pop the hood, undo electrical connection(s) and a few bolts and that was it. Heater core on the other hand... 4+ hours seems to be what I usually hear. Even tough I have never replaced the heater core I have had the dash apart enough to do so on plenty of parts cars.

[fmansfield444]

Pulling the blower motor is not hard at all. There are a couple of bolts (4-5 maybe) on the outside of the blower under the hood. It's been awhile since I removed one but then it should just pull out after connectors are removed.

The heater core is a pretty intensive job but not that hard as long as you take your time and don't crack any brittle plastic.

There is a write up somewhere on the forum in a sticky that is prefect and if you follow it, you will not have any problems.

Also when you order a heater core make sure they give you the right one, in my experience most parts stores have the part number messed up on it, but maybe because I have a CV.

[fmansfield444]

http://www.grandmarq.net/vb/showthre...-Core-Write-Up

Here is the write up. Just follow it and you'll be fine.

[Toploader]

My car is an '86.............so no 4 bolts on the outside:-(.........which means I have a feeling the dash has to be f-ed with:-(

[Toploader]

No 4 bolts on an '86!

[gadget73]

There are 4 bolts on an 86, and its accessed from under the hood. I've had the blower motor out of my own 86 at least once now. That basic heater box design dates to at least 1980. '79 had some different stuff but I wouldn't be too surprised if the blower came out the same way on those too.

[87gtVIC]

Yeah 4 bolts from the outside visible underneath teh p aside hood hinge.

[Toploader]

The 4 position blower switch with ACC.....can I get to it without pulling the entire slide control assembly?
I will take an additional look for those four bolts, I gave a fast glance this afternoon...........you know if I ever win Lotto (keep dreaming) I would put some Ford big block in there and put in a HD Tremack(sp) 6sp tranny.........I love these Tudor rides.............direct line back to the families 500 XL's and Galaxie coupes.

[Toploader]

Why do I smell Prestone when the blower motor stops?? light smoke comes out of the panel registers when the blower slows down and or stops???

[gadget73]

What are you trying to replace exactly, the blower or the switch? The switch is in the slide control assembly and you have to pull that out to get at the switch.

The heater core is shot, thats what the smoke and the smell is. Only fix is to replace the heater core or bypass it so you have no heat.

[Toploader]

Why is it that when the blower motor is working, there is no smoke, and no Prestone smell?
I am in the NYC area...........any suggestions as to someone who specializes in heater cores??

[sly]

coolant smell is probably a small leak in the hose to the heater core or the heater core. blower issue could be the resistor pack and harness having contact issues. If it works when you manually switch it to high... it's the resistor pack.

the resistor is accessible on the engine side of the heater core... it's the only wire harness plugged into the plastic heater plenum on the firewall there. If it's totally baked, you'll need to replace it (I had to do that with my 88 - see pics)

[Toploader]

Sly, replaced the ACC blower resister last week. Still have blower motor issues.

[87gtVIC]

Best bet on the heater core is to do it yourself. A big job like that you will get screwed on prices and end up with countless broken things and excuses by a shop.....