1993 Air Suspension Relay/Compressor

[60ridesagain]

Gentlemen. Good afternoon.

Blowing fuses on the Air ride circuit, compressor never starts. My question is: are the relay and compressor the same for all years, 93 to 98?

I ran across some information that indicated the relays are not the same.

Thanks in advance.

 

[Dominator]

Yes they are 93-98

 

[60ridesagain]

Yes they are 93-98

Thanks much.

 

[60ridesagain]

Yes they are 93-98

I just received another relay, ready to tear into this car and realized that the only blown fuse is # 4 which according to the map that is for the module itself...should I proceed with concentrating om the compressor/relay first? Relying on your Ford experience here...

 

[Dominator]

Does the pump run if you connect the power and ground of of the air compressor motor? Should be red black going to the motor. White blue is usually the air release valve. Possibly your pump is drawing to much power from age/wear? If you install another fuse does it blow right away or does the system attempt to work then it blows? If it blows right away then there is a dead short somewhere in the system possibly a shorted relay or pump motor or wire. The relay is just that a relay. It may look different than a normal one but it does the same thing just in solid state form with no moving parts. Highly doubt it is the module causing the issue unless it is fried and shorted. Hard to tell without alot of info on the issue and not having diagrams in front of me. I only have access to the 1998 manual.

 

[60ridesagain]

Haven't started checking system yet...I wanted to have a spare relay before I opened the wrench drawer. Fuse blows immediately...but the fuse that is blowing (# 4, 15 AMP) specifically shows as the module...the other system fuse (# 20, 30 AMP) shows "Air Compressor". Therein lies the reason for my question...in a proper world the fuse blowing should in conjunction with the labeling give you an initial target to aim at...maybe I'm reading too much into this. I don't have the Gen 1 manuals either, as you, just the 98.

Thanks for the reply...I'll let you know how this plays out

 

[Dominator]

Ok, unplug the relay and pump then try a new fuse to see if it blows. If it does try unplugging the module then reinstalling the fuse. If it blows again you have a shorted power wire to the module and will have to trace it or its a shorted module. Unplugging all items in that circuit and ohming the power wire to ground would be a telltale of a short.

 

[60ridesagain]

Ok, unplug the relay and pump then try a new fuse to see if it blows. If it does try unplugging the module then reinstalling the fuse. If it blows again you have a shorted power wire to the module and will have to trace it or its a shorted module. Unplugging all items in that circuit and ohming the power wire to ground would be a telltale of a short.

Good thinking and thanks for the effort. I called it quits today; I'll get with it in the morning. I'll let you know the results...greatly appreciated.

 

[Dominator]

Just looked at the diagram for fuse 4, you are correct it just goes to the module. Sounds like that wire has a short to ground dark green/yellow or the dark green/violet. These may not be the correct colors for the 93. Or it is a shorted module.
So i think the best bet would be disconnect the module and install a new fuse. if it blows, shorted wire for sure. if it only blows with the module connected then bad module. Having a shorted relay should cause the compressor to run continuously and more than likely fry your compressor and blow the 60amper. I doubt it is your relay. The purpose of a relay is not to allow high amperage to go near the module at all. The module is only a switch to the relay for on and off.

 

[60ridesagain]

Just looked at the diagram for fuse 4, you are correct it just goes to the module. Sounds like that wire has a short to ground dark green/yellow or the dark green/violet. These may not be the correct colors for the 93. Or it is a shorted module.
So i think the best bet would be disconnect the module and install a new fuse. if it blows, shorted wire for sure. if it only blows with the module connected then bad module. Having a shorted relay should cause the compressor to run continuously and more than likely fry your compressor and blow the 60amper. I doubt it is your relay. The purpose of a relay is not to allow high amperage to go near the module at all. The module is only a switch to the relay for on and off.

Again, thanks, for everything. Makes total sense...value your time. Experience really is priceless.