My heater A/C blower quit working. I also now have a ABS and a Air bag check light on constant. I checked all fuses and relays, all ok. I'm at a loss as what to do next....Any ideas?

 

Two fuse blocks, one on the drivers side of the dash, one under the hood, right behind the battery. Check fuses in both.

Are you getting power TO the blower motor? Switch provides ground path thru the resistor block to control speed.

What year is your truck?

 

94 Ram 1500. All fuses are ok. All blower speeds worked properly prior to this, not getting power to the blower motor. I'm stumped!

 

Grab the 95 service manual from here. Wiring diagrams are in section 8W. have a look.

 

So, I traced my problem down to a bad ignition Sw. called local parts store got new switch. Very easy replacement, everything works properly except the key in switch buzzer works without the key in the ignition. It goes off when the door is closed. I can't seem to figure it out any ideas?

 

Think that's a sensor (pair of contacts) in the ignition switch..... your lights weren't on, or something silly like that were they?

 

Sorry to change the subject. Haven't been on in a while due to the app crashing but now it won't let me post a new thread. But no longer doing the turbo idea. Heading a new direction. But I need help figuring out how much psi our ac units push. There's the sucnction side. And the other line that pushes(this one). If anyone has any idea. Or a estimate. Would be greatly appreciated. Also if someone could put this in a thread. Thank you!

 

Everything works properly except the key buzzer is on with the door open and no key in switch. I called the Auto parts store where I purchased the switch. They contacted the switch mfg. who thinks it is a defective switch. They ordered a new switch, We will see what happens. I'll keep you updated