Hello all you fine Ford truck owners out there! I am brand new here and looking for an answer. I can't believe it took me this long too think too look for a resourceful place like this one.

I have a 2013 F 250 Super Duty crew cab long bed with the 379 CI engine. This truck is also equipped with Roush propane conversion kit and was said cost $8500 back when it was installed in 2013.

As I understand it Roush has been doing propane systems since 2009 and works with Ford to get everything to work properly with these conversions. This truck was owned by the company named Amerigas, so, it is a fleet truck.

The truck runs great, however, I need to get it smog tested here in California.

The issue is the ECM is not seeing either bank with the brand new FOMOCO 02 sensors performing a heat cycle. My code reader and the smog shops smog machine says the heated 02

sensors are not cycling. That non action triggers and reads as an "incomplete"on the scan tool. Therefor the smog shop won't test it until the ECM sees the 02 sensor heat cycling. I have driven it about 800 miles and have

tried the suggested methods to get the 02 sensors into action. The suggestions from smog shop operators is to drive at a steady speed for a period of 10 minutes or more and then do it again at a higher speed.

That really isn't a practical way to drive in California unless you have access to a closed track. A chassis dyno would also work well but I don't have access to one of those either.

One other method I tried was to disconnect the battery and put the positive cable to ground on the frame to dissipate any stored energy that might be stored in a module or the ECM that might be the issue.

I am also being told to have the ECM rebooted. Does anybody know what it takes to reboot the ECM? Is this even the issue anyway? I also replaced the catalytic converters and the truck should pass a smog test with no problems.

Anybody that has answers will be greatly appreciated.

 

Was the PCM flashed or replaced? The heated O2 sensors should be set to ignore on a gaseous prep truck. Do you by chance have forscan?

 

I don't know if anything was ever replaced. I just bought it this year and no service records came with it.

Forescan? I don't think so. What I have is a Actron CP 9180 Auto Scanner plus that shows me the INC status with the 02 sensors.

 

it took my 2014 a little over 3,600 miles to show 02 sensor readiness for emissions inspection after a battery change. .
and since i only drive around 1,200 miles a year, it took me a little over 3 years to read readiness.
i just drove without an inspection sticker for the past three year, and have the scanner ready to show the truck has driven many many miles and still not ready.
luckily, i was never stopped.

 

In my opinion that is a ridiculously long period of time to wait for the ECM (computer ) to see the 02 sensors heat cycle. I was suppose to transfer the title to my name 5 months ago. I was also suppose to get a smog check 5 months ago.

Nothing moves forward in California until the truck passes a smog check. I cannot pass a smog check until the ECM sees the 02 sensors heat cycle and at the same time approves of how the 02 sensor performed as a function.

Well... My tags are paid up through next January 2022 . if I get stopped for expired tags ( because the new registration sticker does not go out until the DMV computer systems sees you passed a smog test )

I will explain it to the officer... He will run my plate and see the fees are paid up... I will then plug in my code reader and show him the "incomplete" that prevents me from getting a

smog check passed certificate.

If I fail a smog check... and I will with an "incomplete".... then I am prevented from passing until the incomplete status is corrected. To fail a smog check is to become a GROSS POLLUTER in the eyes of CARB.

Once you enter that status now you get to spend lots of money in a vain attempt to fix something that isn't broken.

I even went to a CARB Referee last week and we talked at length... he assured me that I wouldn't be labeled a gross polluter with this truck because of an "incomplete" on the 02 sensor section.

Not sure if I can trust the Referee because over a few decades I have seen so many friends financially tortured by the rules CARB has implemented when attempting to get a clean smog certificate.

They take it to one shop and spend hundreds... then to another shop and hundreds more and still the check engine light persist with nothing getting resolved.

Today is the day... I am simply going to drive from one shop to the next and explain the situation until somebody test this truck. The cats are fresh and so are the 02 sensors. I recent oil change has been taken care of... the air filter is new.

What could go wrong? lol !

 

i tried explaining to the emissions tester until i turned blue. they are idiots and only know what the law says.
this seems to be a very big problem with the 10,000 lb class trucks like ours.
it simply takes forever for the heated o2 sensors to reach readiness.
i know one guy that took close to 1800 miles to read complete after changing cats and 02 sensors. he had the paperwork to show they were just changed, and the truck passed the sniffer test. but since 02 heaters were not ready, it failed.
he too has been driving it 7 years now with no inspection sticker.
he got stopped once for it. and the cop had a 6.2 powered F350, went through the same crap, and let him go.

 

thats a crazy amount of time. i have had my truck reset numerous times due to tuning and its never taken more then 40 miles to have the o2 sensors in ready status. The most common ways to reset the computer is pulling the battery cables touching them together and letting it sit like that for 15+ mins. You can also pull the ecm fuse. Need to be sure that power is completely drained in the system. Your trans may seem a little weird at first cause it will reset the learned habits as well.