Hi,

I am really having a frustrating time with this and could really use a favor from someone to do a simple test. If you have a 1996 Bronco, F150 or F250, and you have a code reader, could you please connect it up and tell me how may "tests" you see? These usually show up as black circles near the tip and have tiny letters in them. I am running into a frustrating problem where, even after having replaced the PCM, my system only displays 5 tests and the local emmision gestapo says I should have 8 showing. The ones not showing are Misfire, Fuel System and Comprehensive Component. I need some verification (other than their word) that these are really supposed to be there.

Anyway, I would REALLY appreciate it.

Thanks,
BB

 

Not sure off the top of my head what the test are or how many there should be, but I've got a 96 f150 and a craftsman obd2 reader so I can check it out for you tomorrow when Im home if someone hasnt got you an answer by then.

 

Thanks! Would be much appreciated.

BB

 

My Service CD shows 8 tests:

Monitor (the OBD II Drive Cycle) Requirements

The following conditions must occur to complete all OBD II monitors and components.

-- The Misfire, Comprehensive Component, and Fuel Monitors are checked continuously from engine warm-up and can complete any time.

-- The Misfire Monitor on applications with fuel deceleration shut-off requires a deceleration at closed throttle for 10 seconds following the acceleration to 55 mph at one quarter to one half throttle. Decelerations following an acceleration must be performed twice consecutively (or three consecutively on some truck applications) to satisfy this misfire requirement.

-- A transmission component functional verification in the Comprehensive Component Monitor requires at least 6 complete stops in the normal city portion of the drive cycle.

-- The EGR and Secondary Air Injection Monitors require a series of idles and accelerations.

-- The HO2S Monitor requires a steady speed drive for approximately 1 minute at 30 to 40 mph.

-- The Secondary Air Injection Monitor requires almost 12 minutes of vehicle operating time from initial start-up.

-- The Catalyst Efficiency Monitor requires a steady speed drive for 5 minutes at 40 to 60 mph, followed by a normal city drive between 25 and 40 mph for 10 minutes.

-- The Evaporative Emission Monitor requires at least 3 minutes of the steady throttle part of the drive cycle (10 minutes) between 45 to 60 mph to test the evaporative system.

 

I think what everyone is getting at is that the tests aren't just "there" all the time. If the battery has been disconnected or the tests have been reset, it can take several days of driving for all the self tests to show passed status. This is what your test center is looking for.

This is, of course, what prevents us from erasing any codes immediately before emissions testing.

The tests are in there, it sounds like they are not passed yet. It probably just needs some varied driving to complete the self tests.