02 EB 4.6 - Blower stuck on High

[tking08]

Hello,

First off thanks to everyone for posting the information we have on this site. It's a great resource.

My problem in the wifes explorer is that the fan/blower is stuck on high. We have the digital automatic temp controls in the truck and I am not sure where to start.

Any help would be appreciated.

Thanks in advance!

 

[tking08]

Nobody?

 

[japracer4]

does it blow on high no matter what speed you select or does it blow on high only. if its the first i bet the controller is bad. if its the latter you need a blower motor resistor. hope that helps

 

[Curtis]

does it blow on high no matter what speed you select or does it blow on high only. if its the first i bet the controller is bad. if its the latter you need a blower motor resistor. hope that helps

x2

 

[tking08]

On the datc you can select off but the blower stays on high. The only time it turns off is when you turn the vehicle off.

 

[tking08]

Is the the control you recommend I replace?

http://cgi.ebay.com/ebaymotors/2002...r_Truck_Parts_Accessories?hash=item4a9c2d2eec

 

[RickM]

Is the the control you recommend I replace?

http://cgi.ebay.com/ebaymotors/2002...r_Truck_Parts_Accessories?hash=item4a9c2d2eec

The Ebay auction shows the entire unit. I believe the advice was that the control unit behind the glove box is likely the culprit. On my XLT the system is less sophisticated and the replacement of the Blower Control Resistor solved my speed issue. Your system has a control unit as opposed to the resistor.

Control unit described on this post: http://www.explorerforum.com/forums/showpost.php?p=2082311&postcount=12

As mentioned the module is behind the glove box. Merely push the two sides of the glovebox compartment towards the center and it will swing down and out of the way.

This thread will explain with a bit more detail: http://www.explorerforum.com/forums/showthread.php?p=2082311#post2082311

 

[jbwilli]

I purchased a 50K miles 2009 Explorer Eddie Bauer with dual climate control recently. All was normal on the test drive, but on the trip home the a/c blower motor went to HI and stayed there. Only turning the key OFF would stop it and no combination of a/c settings would get it out of HIGH blower. The next day, the battery (it was the original Motorcraft) labored to crank the engine, so I took it to SEARS and had a new DieHard installed. After the battery was replaced, the a/c blower motor returned to functioning normal. All blower speed control was restored. It remained that way until now, 2 months later. The a/c blower is once again stuck on HIGH. I disconnected the battery for 1 minute and reconnected. NO HELP! I next disconnected the battery for 30 minutes.
NO HELP! I installed a new motor blower control (the one just behind the glove box) FORD PN YH-1822 6LZ-19E624-A (Now $95.27 including tax!). ALL IS BACK TO NORMAL and ALL IS WELL FOR NOW!

 

[BigRondo]

I purchased a 50K miles 2009 Explorer Eddie Bauer with dual climate control recently. All was normal on the test drive, but on the trip home the a/c blower motor went to HI and stayed there. Only turning the key OFF would stop it and no combination of a/c settings would get it out of HIGH blower. The next day, the battery (it was the original Motorcraft) labored to crank the engine, so I took it to SEARS and had a new DieHard installed. After the battery was replaced, the a/c blower motor returned to functioning normal. All blower speed control was restored. It remained that way until now, 2 months later. The a/c blower is once again stuck on HIGH. I disconnected the battery for 1 minute and reconnected. NO HELP! I next disconnected the battery for 30 minutes.
NO HELP! I installed a new motor blower control (the one just behind the glove box) FORD PN YH-1822 6LZ-19E624-A (Now $95.27 including tax!). ALL IS BACK TO NORMAL and ALL IS WELL FOR NOW!

Welcome aboard!!

Nice job on the fix!! :biggthump

Typically a blower stuck on high with the manual controls indicates a bad Blower Motor Resistor and with the dual auto controls it indicates a bad Blower Motor Speed Control, as you found out!

Thanks for posting this info. Feedback helps others looking for the same or similar issue.

 

[jbwilli]

FYI...I read where the fault of a failed Ford 19E624-A blower motor control is a failed transistor (mounted on the unit via pop rivets and 3 soldered connections). I do not have a transistor checker, but I am going to replace the transistor in my failed control unit and see if it repairs the problem.

I went on line and typed in the pn off the transistor (MJ11028G) and found Mouser Electronics and other suppliers sell it for $7-10! Your local electrical supply houses may also stock this transistor. You gain access by simply removing the plastic cover off of your control.

First, carefully remove the foam gasket and then remove the 2 Phillips screws that secure the cover onto the unit. Remove the unit from the cover. Using standard soldering practices, remove the solder from the 3 terminal post of the transistor and drill out the 2 aluminum pop rivets with a properly sized drill bit. The transistor can now be removed! Installation is the reverse of above. If the transistor is the problem, then for $10 or less you can repair the expensive Ford 19E624-A control ($90-100)!

 

[mbruffey]

If the transistor is the problem, then for $10 or less you can repair the expensive Ford 19E624-A control ($90-100)!

In your case, was the transistor actually the problem? Thx! M

 

[jbwilli]

In your case, was the transistor actually the problem? Thx! M

See my post on 11/12. I had already replaced my unit with a new one. That is when I discovered the transistor. I saved my removed unit and plan to replace the transistor and have a back up unit. I never got around to ordering the transistor, but I do feel it is the problem.

 

[mbruffey]

jbwilli: Thanks! M