Check the blower for blockage. They blow just like any other car for the most part, there is noticeable differences between the speeds.

You can try resoldering the compressor control unit to fix it. Alternatively, I sell a bypass harness to get rid of it: AC Compressor Control Unit Bypass Plug and Play Kit

 

Also, if your blowmotor resistor is going bad, that will take our your fan speeds on the switch. Usually only 3-4 work and 1-2 are dead.

 

Sean's right, It's the blower motor resistor for sure. I can't help with the A/C compressor issue.

 

Yeah my blower motors in my preludes all blow super good. You might have a blockage like others said. Does the motor sound like it is changing speeds?

 

A blockage is a slight possibility, like if it sat in a field and mice made a nest inside the heater box. But it's more likely that it's the blower motor resistor. They are almost impossible to find. Here's one solution...

https://www.preludepower.com/threads/heater-blower-resistor.462230/

At least one member claims to have successfully replaced the individual resistors.

 

Where would I find the compressor control unit?

I think it does spin at setting 1 and 2, and at 4 it doesn't sound like it is changing speeds, so may try a new fan motor to see if that helps. Thanks guys!

 

To find the CCU, remove the glove box and look to the right side. I think 2 bolts mount the CCU assembly to the frame. Don't drop the bolts!

You will probably have to resolder the contact points on the CCU. Also blower motors are cheap on Rockauto if you need to replace it.

 

So 1 and 2 actually don’t work, but I don’t really care as I would probably always have it on 3 and 4, unless a bad 1 and 2 affect 3 and 4?

 

If you do not replace the resistor, then it will burn out.

 

It might become clearer if you look at the wiring for the blower resistor. The blower motor resistor consists of three separate resistors. The highlighted resistors on yours are blown, giving you only fan switch settings 3 and 4. The worst that will happen if you keep using it is that the other resistor will blow and you will lose setting 3. Setting 4 is directly wired (no resistor) so it can't blow. You will have setting 4 even if all resistors are blown.

 

Ah gotcha, so it is either a blockage or a worn out fan motor.

 

No, I don't think you got me lol. It's the blower resistor. I was answering your question in post #10. The lower speed resistors do not affect the higher fan speeds. In fact it's the opposite. The higher speed resistors will affect the lower speeds. If you number the resistors from 1 thru 3, with 1 being the bottom resister that I highlighted in the circuit above. If resistor 3 burns out you will lose speeds 1 thru 3. But if only resistor 1 blows you will only lose speed 1. It's likely that on yours, resistor 2 is blown and it took out speeds 1 and 2.

 

yep but all i really care about it 4 blowing much harder than it does, it seems weak, but in recirculate it’s maybe normal, but on the weak
side…

 

Oh I gotcha. You weren't really clear in saying that it's blowing weak even on setting 4. You could have more than one issue going on here. If the blower motor doesn't run at all on 1 and 2 the blower resistor needs to be replaced. If it also blows weakly on 4 you could be right about also having a worn out motor or a blockage. But if the blower motor spins at all on setting 1 your blower resistor is still good. I'd pull the motor and jump it to 12v and see if it's spinning slower than you would expect.

 

Its here:

 

Thanks very much everyone, by resoldering the contact points, do you mean the connector pins?

 

Looking inside the center of the dash I see no sign of blockages, looks like 2 different type of filters? There is no cabin filters back then correct?

 

Id take the whole blower motor out like Luzer suggested. Mine had a bunch of debris in it when I got the car. It has a mesh fabric over the top to keep debris out. But mice often get into it.

 

About the CCU, need to reflow on the main connector?

 

Just reflow anything that looks suspicious.