I have a couple of issues I'm trying to work through.

I'd like to check the Keep Active Memory fuse I've seen referenced in other posts. My 96 2.3 5spd ranger won't complete a drive cycle test. Battery has not been disconnected since I replaced the starter months ago.

The AC compressor gave out on me last week so I've ordered a new one along with a drier and orifice tube, etc.. Going to tackle this myself. A friend does HVAC so he's going to evac the system for me but I'm doing the rest. Any tips or suggestions to help me save time/problems with this task?

Thanks,

JimA

 

When the monitors wouldn't reset on my 97 Explorer a quick look at the FACTORY wiring diagrams told me I needed to see if the horn worked. It didn't

Replaced the horn fuse, drove it a couple days & then passed Calif smog test.

Is your horn working?

 

Yep, horn works. I read your thread on the horn and saw your fix. I just tried to run a drive cycle test. The only test that doesn't get completed is the catalyst test.

Any ideas?

JimA

 

So it's only one of the after cat 02 sensors that has the PCM upset. Seems like you should have a check engine light if a sensor was bad.

The fuse for the 02 sensor heaters is probably under the hood in the power dist box. Flip the lid over-should be a diagram-& see if the "Hego system" fuse is blown.