AC/Heat Blower not work, ideas?

[cyber0ne]

When I first towed the car home I tested the heat and blower worked fine. All 1 thru 4 turned on and no issues.
I did notice the belt for the AC was missing due to the tension pully missing. So I replaced it and put a new belt on.
Over the past few weeks I have replaced 1/2 the engine, exhaust, intake, and I have cleaned everything....

Now with the car running.... the heat/AC blower does nothing. I have replaced the switch thinking it went bad and still nothing.
I have checked the fuses, etc... and everything seems to be fine. I ran a wire off the black/blue wire to a ground and blower turns on. I have traced wires and cannot find anything loose....

Anyone have any ideas what I can try next?

 

[RonJ]

What car? The blower circuit has two fuses -- in dash and hood fuse boxes.
Check both.

Have you checked the relay?

 

[cyber0ne]

95 Civic LX

I have checked and replaced both (just for giggles).....

Not the issue. Like I said both wires going to the blower motor are getting power when the car is running....and I was able to ground the black/blue wire to run the blower at high..... if the fuse was blown none of that would work.

 

[cyber0ne]

Is there some control besides the switch on the dash that I need to look at?

 

[RonJ]

If the Blu/Blk wire in the blower motor plug has voltage, then the blower motor ground wire is bad.

 

[cyber0ne]

Thanks RonJ!

Found the black wire on the back of the switch (ground) was not grounding right. Ran a new wire off it and created a new ground and works great!

Now to wondering if the AC even works........ starting to wonder what I got in to with this car!

 

[RonJ]

Nice job. When you have specific questions about your A/C system, post them.