I have a 1999 F150 5.4l that failed emissions, Results are as follows:

Evap: NOT READY
O2 Sens: NOT READY
O2 Htr: NOT READY
EGR Sys: NOT READY

Also received fault codes:
P0430:Catalyst system efficiency below threshold(bank2)
P0420: Catalyst system efficiency below threshold(bank1)

I disconnected my battery last weekend to clean post, and was told the NOT READY was due to that. No check engine light. My question is this, once i have driven a bit more and the NOT READY's clear, will the fault codes clear as well?

Thanks,

 

They may or may not - if your cats are bad they won't.

 

The not ready ones means it hasn't been driven enough. You have to go thru so many drive cycles before those will clear.

The cat ones could have been that your truck wasn't warmed up enough before the test?

Since you say there is no CEL, that would be my guesses.

Drive it around making sure you do some stop and go, some hwy etc. It also needs to go thru a full temp and full cool down cycle or two.

Good luck!

Mitch

 

If you disconnect the battery, you have to drive 300+ miles before the PCM has enough time to be properly set. It prevents people from clearing check engine lights and then getting it inspected immediately after.

Texas has no actual emissions inspections, all they do is check the OBDII for codes like they did, so all you need is to have no codes.

To try and get the cats to clear no codes, drive the absolute **** out of the truck for at least an hour and have it inspected right after while the cats are still nice and hot. If they don't pass then, you'll have to replace them or get a programmer and have custom tunes written to turn off the rear/downstream O2 sensors. I imagine, since you don't have a CEL, you'll pass after romping on it.

 

There is no mileage requirement for OBDII tests to pass. Likewise, "driving the ****" out of the truck isn't going to help (that sometimes worked for pre-OBDII tailpipe/sniffer testing). All of the monitors either run continuously or have specific entry criteria that must be met before the test runs. If the entry criteria are not satisfied, then the test will not run and the monitor flag will remain in the "Not Ready" condition.

You will not pass until you have the requisite number of monitors set to "pass" with no pending fault codes.

Several of the monitors should run within the first several miles of normal driving (O2 sensor and heaters, EGR). Catalyst tests usually take a bit longer. EVAP tests might take days or weeks before running. How much driving was done since the battery was re-connected?

Cat efficiency codes usually crop up after some other problem has been left untreated for too long (misfires, "lean" codes, etc) then finally repaired. What is the recent service history of the truck?

 

You need to drive for a certain period of time until the PCM is ready, and that is usually 150-300 or so miles. No, there's no actual mileage limit, I just gave him a number to shoot for to make sure it's ready. After having already failed for it, I'd do 300 to be safe. Seen it take 80 miles, but also seen it take 500.

 

The evap will probably be the hardest one to get to reset. The way I understand it the evap won't even be tested if the tank is between full and 3/4 or 1/4 and empty.

 

No more guessing, here's the drive cycle reset sequence. But from the looks of your report, you're about to spend some bucks.
http://www.obdii.com/drivecycleford.html

 

Unless he has a scan tool, the Ford OBDII drive cycle procedure won't work.

 

I had the same issue with the "not ready" when I had my engine replaced. I had only driven 20 miles or so when I went to get the inspection.
I did a 60 mile drive (about 10 miles stop and go, 50 on freeway, turned off the truck 2-3 times when I stopped).

Drive it for a bit and stop by auto zone to have the codes checked, and it will also say if the systems are ready.
If you have a code set, have them clear it and drive strait to the inspection and hope it does not set in that time.

 

Wrong. If you do that, you'll have your P1000 back and you'll have to wait for the requisite number monitors to run (and pass).

 

I didn't have an issue when I did mine.

I had the same "Not Ready" issue when I had my inspection and failed, and also had a P0171 code pending (but no MIL).
I went for the drive, hooked up my scan tool, saw the systems were now "Ready" and cleared my pending code. I did this in the parking lot across from the inspection station and passed.

 

There's a difference between a pending code and a hard code.

 

I had to do "e test" in april
it came back not ready

the folder the test guy gave me said let truck run a few min with the a/c on
then drive highway speed for 10 min
then drive city speed for 10 min

I went a little farther as I had to wait 2 days to get the truck retested again but it passed with no issues

my mistake was checking / clearing codes before testing

 

Folks, you cannot defeat the program no matter how you try.
Any cancel, clear, program change, reflash or power down will reinitialize the diagnostic program and set the code 1000 until all systems has completed and passed before the 1000 code will clear.
The drive cycle is so involved for cold off time at the beginning, the varying hot drive conditions for the roads you have to run on that you cannot control all specific sets of conditions all in one shot or even three or four.
An emissions station that tells you to do this and that is blowing smoke at you to get you to leave because they don't have any magic knowledge that we don't have.
About the only system that is commonly left go is the EVAP not complete because of it's huge set of test conditions and huge length of time it takes.
I can assure you that 60 miles is not enough for this one.
The FORD system was designed so it cannot be defeated and slide through emissions inspection by tomfoolerly actions.
The program works the same in your truck as it does in mine and everyone else's and everywhere else.
Don't believe it? Look at Ford's OBDII over view at all that goes on then decide. BTW, it's close to 100 pages long.
Good luck.