09 prostar a/c replaced everything still not working

Wondering if anyone can give me some insight to the problem i'm having with my 2009 Prostar. the front blower motor stays on ALL the time unless you pull the 30 amp fuse in the front. I have pulled the dash apart and checked the wiring and there are no cut-ins or frayed wires gaining power elsewhere. My blower speed selector switch does not change it at all, it just blows on high 24/7/365. I can change the temp and the direction just not the speed, the rear has not been affected at all. Any insight would be helpful, thanks in advance!

 

You need a linear power module. Kinda common for those to go bad, and when they do this is what happens. It is located on the side of the blower housing. Remove the kick panel near the floor in front of the passenger door. This is what it looks like. "1" is pointing to the two connectors that plug into it.

 

What he said. LPM.

 

That was exactly the problem, thanks a bunch folks, now that International finally got me the right one im back to having onl a blower when I want it. Again thanks a bunch!

 

hi heavyd....i hope you can help me...i´m diagnosing a prostar and ther is no signal in the fan clutch high pressure sendor ither in the compresor. allready check with the logic dimond software and do not show signal on those signals. the inlet and outlet thermistors do show signal 86 and 95. but the compresor dont start. i use the conectors section an actívate ths ac cluth manually but when the pressure arrise the fan clutch do not work. i even chenge the sensor..

 

What engine do you have?

 

Where is the blower motor at? Mine quit blowing this week. A/C is still cold and compressor is coming on. Thanks

 

Blower is below the fuse/breakers in the blower box.

 

Ok. Thanks heavyd. I'm gonna take it out and check if it has power to it tomorrow.

 

it´s a cummins ISX