1997 - 2003 F-150

Cat not ready

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Old Oct 6, 2016 | 04:53 AM
  #1  
rrengineer's Avatar
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From: SoCal
Cat not ready

Trying to get my 2000 with the 5.4 Triton engine smogged for Kalifornia. All systems pass on the OBDII that the smog tech uses before hooking into the smog check computer wired to the state of Kalifornia. It took some driving but I got 2 out of three "not ready" read outs cleared, but the cat is the only one that refuses to come off "not ready". I have put over 500 miles on the truck in all kinds of driving conditions including two runs on the freeway for 20 miles at a constant 60 mph twice. I am having fits over this. What the heck am I supposed to do? Should I go to another smog station. This all started because I changed the battery just before the smog check. Every day I think about leaving Kalifornia for a free state.
 
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Old Oct 6, 2016 | 06:41 AM
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Have you tried executing the specific drive cycle that is specific to running that specific monitor test?
 
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Old Oct 6, 2016 | 09:34 PM
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When you took the cables off the battery it powered down the PCM memory and caused a reboot of the computer.
A reboot for 'any reason' causes the computer to go into full diagnostics.
The fuel tank system takes the longest time to pass diagnostics because the tests are quite involved.
If that system is marginal it may take some time to have a set of conditions that will pass all the testing.
Which one of the systems are not reset?
The P1000 code does not say which one.
Only the system that is not reset is the one causing your issue.
I frankly do not have much faith in the drive cycle attempts, not because it doesn't work but because you cannot control all the driving circumstances it requires, much of the time.
Your case in point; at 500 miles even at random, it should have reset that system if you did a number of drive cycles over many days without even paying attention to the specific drive cycles requirements.
You need to get a copy of the specific drive cycle requirements and read them over to be sure you understand before even trying it.
.
Next time anyone is going to remove power from the 12 volt battery., get a 9 volt battery test supply and plug into the cigar lighter so it holds computer memory while the 12 volt battery is disconnected, then you don'y get into this situation.
Good luck.
 
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Old Oct 7, 2016 | 01:38 PM
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Generally speaking, most cars need to see two consecutive cold starts with highway trips


Cold start, drive 15-20 miles
Cold start, drive 15-20 miles
 
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Old Oct 10, 2016 | 05:26 AM
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Originally Posted by projectSHO89
Have you tried executing the specific drive cycle that is specific to running that specific monitor test?
Do you mean the one that says: "Drive in stop and go conditions. Include five different constant cruise speeds, ranging from 25 to 45 MPH over a 10 minute period."

Is that the drive cycle you are talking about?
 
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Old Oct 10, 2016 | 05:27 AM
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Next time anyone is going to remove power from the 12 volt battery., get a 9 volt battery test supply and plug into the cigar lighter so it holds computer memory while the 12 volt battery is disconnected, then you don'y get into this situation.
Good luck.[/QUOTE]

I wish I knew this before I changed out the battery so close to a smog inspection. I certainly will next time.
 
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Old Oct 10, 2016 | 05:29 AM
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From: SoCal
Originally Posted by Patman
Generally speaking, most cars need to see two consecutive cold starts with highway trips


Cold start, drive 15-20 miles
Cold start, drive 15-20 miles
Along with the drive cycle above I will try both methods before going back to test.
 
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Old Oct 10, 2016 | 05:31 AM
  #8  
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Originally Posted by Bluegrass
When you took the cables off the battery it powered down the PCM memory and caused a reboot of the computer.
A reboot for 'any reason' causes the computer to go into full diagnostics.
The fuel tank system takes the longest time to pass diagnostics because the tests are quite involved.
If that system is marginal it may take some time to have a set of conditions that will pass all the testing.
Which one of the systems are not reset?
The P1000 code does not say which one.
Only the system that is not reset is the one causing your issue.
I frankly do not have much faith in the drive cycle attempts, not because it doesn't work but because you cannot control all the driving circumstances it requires, much of the time.
Your case in point; at 500 miles even at random, it should have reset that system if you did a number of drive cycles over many days without even paying attention to the specific drive cycles requirements.
You need to get a copy of the specific drive cycle requirements and read them over to be sure you understand before even trying it.
.
Next time anyone is going to remove power from the 12 volt battery., get a 9 volt battery test supply and plug into the cigar lighter so it holds computer memory while the 12 volt battery is disconnected, then you don'y get into this situation.
Good luck.
The OBDII scanner the tech uses before hooking the truck up the the state smog computer lists out all systems tested by name. When it gets to the catalytic converter, it just says "Cat - Not ready".
 
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