Code reader question?

[rusty ol ranger]

So i broke down and spent the 29.99 (31.78 w/tax ) on a code reader for ford EEC IV systems from autozone.

I was hoping to use it to diagnose some issues with the Ranger and F250.

Now, it says its only for EEC IV systems up to 95. My F250 (97 460) uses EEC IV, is there any reason this thing wont work for that? Or did they just say 95 because it was idiot proof?

 

[fastpakr]

It should be fine for the F250. All passenger vehicles and light trucks switched earlier, but heavier trucks took an extra year or so before getting OBD2.

Sent from my SM-G960U using Tapatalk

 

[adsm08]

Yeah, it should work fine on your 250. Technically all vehicles were supposed to be OBDII for the 96 model year, but Ford cut a deal with EPA. The F250s were getting a major revamp for 98, and they weren't sure what they were doing yet. In exchange for not having to get their HD trucks to OBDII until 98 they had almost all the cars and the Rangers to OBDII in 95.

 

[rusty ol ranger]

Perfect, thanks guys.

 

[Will]

All that aside--it doesn't tell what is wrong. It just tells you that a sensor is reading an unfavorable reading. It doesn't tell you---why.

A common reading would indicate an O2 sensor. And people replace a perfectly good O2 sensor. It just meant that the computer saw an unfavorable voltage return from the O2 sensor. It doesn't mean the sensor failed.

A lot of people kill the messenger when it comes to those devices. Very limited usefulness.

 

[rusty ol ranger]

All that aside--it doesn't tell what is wrong. It just tells you that a sensor is reading an unfavorable reading. It doesn't tell you---why.

A common reading would indicate an O2 sensor. And people replace a perfectly good O2 sensor. It just meant that the computer saw an unfavorable voltage return from the O2 sensor. It doesn't mean the sensor failed.

A lot of people kill the messenger when it comes to those devices. Very limited usefulness.

This is why i havent changed anything yet. This is my first, somewhat futile attempt at properly diagnosing EFI.

I still prefer a good carburator/duraspark combo. But thats not possible on a 2.9...unfourtantly.