Hi

Almost 1 year ago my oem relay for the blower was burned. I replaced it with an non oem relay as I couldn't find the oem one in the market. Now again my blower sometimes works and sometimes not. So I checked the relay I put and it is also burning up. Even the relay housing is burning. Why is that?

 

I hope you put something similar and not something that 'just fits'.

 

The problem is oem relay also got burned. The same leg you can see melted on the female side. Means something bad is happening. Maybe blower taking more power than it should?

 

melted or burned in this way means too much heat is being produced at the connection point.
Either too much power is being pulled through it, or the connection itself is too restive.
Make sure that the contacts are clean and tight in both sides (relay and fusebox)
you may need to replace the blower motor or take it apart and clean it out and lube the bearings.

 

my blower motor power connector shorted out due to cheap factory design.
inspect for exposed copper at the connector.
taped mine up and all good.

 

I always wonder from where I can access the back of the under the hood dashboard

 

under the hood theres a dashboard?

 

Fuse box. Give the guy a chance, he's from Pakistan.

 

I guess, Fridays.

 

Sorry I want to say under the hood fuse box. I can't see from where the fuse box connectors are connected.

 

Thanks for understanding me.

 

Just removed the blower motor. Inspect the connection, they were good. Only a small section of wire is replaced upto the motor connection. No sign of burning there.

Blower motors looks jammed by tring to rotate it by hand. Not totally jammed but got some resistance.

Are these 2 screws for the lubrication?




Also tried to remove fuse box to access the back connections But couldn't:



I inspected the wiring till here. From here onward I cannot access the wiring:




You can see a new connector is tapped into the wiring and the connector and wires look good:

 

Now please suggest me what to do? I want to lubricate the motor so it moves freely with no resistance.

@tony_2018
@Relic1
@tamboo
@DaX

 

I have taken a motor apart before and cleaned/re-lubricated the bushings. but it's not for the inexperienced.
You have to disconnect the connector housing, then remove those two screws to get the motor out of the housing.
I honestly do not remember exactly how I did it, it's been many years, I remember a few steps that felt like I was going to brake it.
FAR easier for me to simply get a replacement motor.

 

I am thinking of getting an oem relay
The blower motor doesn't look to me to much jammed. Only a little bit.

 

I agree, it's not for the faint of heart to disassemble the motor. I've taken one apart about 15 years ago but can't remember the exact steps. The brushes in the one I had were so far worn down that one of them came out of the slot that holds the brushes and wedged against the commutator, damaging it. I tried turning the commutator on a lathe to clean up the surface but that didn't work either, so I just bought a new motor.

 

Just replace. I had to replace one recently. just quicker to do it that way.

 

guessing since he is in Pakistan that replacement parts are not as easy to get as they are for us in the US.

 

He can attempt to clean it

 

My relay again get burnt to the extent that the blower is not working. I tested how much amps blower is drawing at full speed and it was 7.5 amps with engine running. Is the amps good?
But I will measure them again using clamp multimeter UNI-T

 

@tony_2018 @Relic1

My blower is DENSO 194000-043

 

 

based on what you're seeing it's either time for a replacement fan motor or to dive into taking yours apart and cleaning/lubing it.

 

replace blower motor and relay

 

Today I replaced the blower motor and blower relay. But the blower relay gets hot if I kept fan speed at full speed.
Is it normal?