I just installed a A/C kit in my girlfriends 94 cx hatch.
With the car off there are no check engine lights on. When i turn the A/C on, the check engine light comes on.

What could be causing this? Has anyone experienced this??

Thanks

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bump

 

u sure its the ac or did u disconnect somthing and forgot to put it back in such as a sensor?

 

Well, what code is it?

 

you can run the code when the car is on! try it!!

 

everything is plugged back in, double checked everything.

The light only comes on when the a/c is turned on. Does anyone know if the coolant temp sensor is different for vehicles with a/c??

i havent had a chance to scan the code yet as the gf is currently driving the car

 

where did u find the info to install the ac, by the looks of it their is a ton of elec connections.

 

the kit came with everything needed to do the install (minus freon). even came with instructions.

 

before you type anything else...Check what the code is and go from there.