Explain this....

[400exrider]

I was looking under my hood today and I noticed this. The first pic is how I found it laying. It looks like someone used a jumper wire or something. It also looks like it should plug into the white plug. So whats up with this?

[no-tel-in]

hmmmm

That plug does go into that a/c canister

as far as the junper, idk

Does your a/c work?

[Rob]

take out the jumper and plug it in.. let us know what happens!

[7.3Lstroker]

i think that is a low pressure switch for the a/c i just had that class in college and replaced on in a 150 if you jump it, it makes the a/c work im pretty sure...
the switch is that piece there on the accumulator

[400exrider]

It works fine like it is, but someone had to have done that for a reason and I am kind of worried about plugging it back in.

[toyomike]

Thats your low side pressure switch. Cuts the compressor off when the system is low on freon. You need to fix it or risk burning up your compressor.

[03ccf350]

yeah as mike said, it is the low pressure sw. and when the system sees that it is getting low on freon, it stops the compressor from running. someone jumpered it to fool it into running when it should not be. there is lube in the freon that the comp. needs to live. just get it topped up and maybe get the shop to put some die in it cause it must have leaked at some point. the die will show where a leak is.