TRUCK FROM HELL

[TBaganATX]

I have 94 2 Door Blazer Sport, I have basically have done almost everything to it you can think of, and it never seems to end!

I went to my office today to do so work in our warehouse. I went to start my Blazer and it was almost dead... I was like WTH?? So it finally started and left it running a bit outside. I shut it off and the stupid AC Control stayed on. I start it again, and turned the ac on, and killed it went off.

It had done it before, but not in a while.. This is a new control unit ( 2years old but bought new) any suggestions?

Not to mention when I'm driving and running the AC, it blows harder on med/hi than HI itself... and it will shut off by itself..

Im at a lost! I'm up for any suggestions..

TIA...

Tony

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[twomanymontes]

Did the HVAC head unit remain on or just the blower motor stayed on?

 

[TBaganATX]

The head unit..it was on off but illuminated. But it kept blowing before after turning the truck off in the past.

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[TylerZ281500]

pull up a diagram, you have electricla gremlins. time to learn electrical my friend

 

[TBaganATX]

That's what I was afraid of.. if you only knew everything I have done to this truck...

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[TylerZ281500]

ive been through my whole 2 door as well. doesnt look like a 5 figure truck but its what i have into it. fortunately im selling it to a friend because i dont want it anymore so i totally understand, i really do.

 

[TBaganATX]

I was told that the head units sometimes had issues... so I was hoping that's what someone else would say...

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[TylerZ281500]

88-94 headunits did but it was just that they someitmes just skip from high to low or head to ground but they wouldnt do waht your explaining.

 

[TBaganATX]

I'm tempted to just buy a another new one...Not to mention some dipstick that worked on my ac before broke a tap on my blend door, and my actuator will not work.. tempted to put it on and silicon it in place.

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[jvthundercat]

The problem is most likely ground. Had this same thing on my 92 dually. I ran a direct ground wire to the under dash support and working great ever since. At least I have a spare head unit now....