Ontario Drive Clean and P0401

Discussion related to the 4G69 powered Lancer Rallairt
cranswick
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Joined: Mon Feb 27, 2012 2:10 am

Ontario Drive Clean and P0401

Post by cranswick » Sat Apr 19, 2014 4:37 pm

Hey, i forgot to ask you when we spoke last night, i noticed the new build has an option to disable P0401, does this affect the monitors? will i pass emissions? it' very important, as i only got a conditional pass last year, so i NEED a full pass this year.

hackish
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Re: Ontario Drive Clean and P0401

Post by hackish » Tue Apr 22, 2014 10:08 am

If you disable EGR the monitor should show up as not applicable. Do you think this would do the trick?

-Michael

cranswick
Posts: 124
Joined: Mon Feb 27, 2012 2:10 am

Re: Ontario Drive Clean and P0401

Post by cranswick » Tue Apr 22, 2014 2:22 pm

I don't know...last year, I reset the ECU, completed all the drive cycles, except EGR, so it wouldn't throw the code (automatic fail), and I got a conditional pass because the EGR monitor was "not ready" if I fail this june, the car will no longer be road legal...I don't know exactly what the requirements are, since they don't do the sniff test anymore, they just interrogate the ECU to check the emission monitors, and if they're all "ready" and no code is thrown, then you're good, I'm not sure what will happen if I disable EGR, I'm pretty sure I only get one shot...have you looked into the EGR system much lately? If you can't fix it in time, will my tune work ok non-turbo? I could just take the UICP and BOV off, and put the AEM intake back on to the throttle body, and complete all the drive cycles, but i'll need to protect the compressor from foreign objects somehow.

hackish
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Re: Ontario Drive Clean and P0401

Post by hackish » Tue Apr 22, 2014 10:09 pm

Running a boosted car without plumbing it in anywhere is actually more risky than that. I think if you switched back to a stock MAP and ran a stock tune with the injector size adjusted it would probably pass but you would need to be oh so careful with the go pedal. I think I just need to have another look at the EGR settings and come up with something for you to try out.

-Michael

cranswick
Posts: 124
Joined: Mon Feb 27, 2012 2:10 am

Re: Ontario Drive Clean and P0401

Post by cranswick » Wed Apr 23, 2014 6:44 am

that would be great Mike...Do you have the FSM? remember under the bridge on the highway, i showed you that section of the manual that had the logic flow chart and everything for that monitor...if you don't have it i can email it to you.

hackish
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Re: Ontario Drive Clean and P0401

Post by hackish » Wed Apr 23, 2014 7:42 am

I have the FSM, yes. Your problem is related to the fact that some of the EGR checks rely on the MAP signal. Since the MAP value is now about 1/3 the original (different sensor) items are no longer in range. So I need to patch the original routines to re-scale the MAP signal in the places where it is not related to boost.

-Michael

cranswick
Posts: 124
Joined: Mon Feb 27, 2012 2:10 am

Re: Ontario Drive Clean and P0401

Post by cranswick » Wed Apr 23, 2014 12:44 pm

ah yes, you mentioned something along those lines before...sounds like a fair bit of work...i don't know what's harder, you figuring that out, or me returning the car to natural aspiration. :D

hackish
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Re: Ontario Drive Clean and P0401

Post by hackish » Thu Apr 24, 2014 8:59 am

The problem has to be fixed properly so I think that's the best strategy. I've put it in my schedule for next week.

-Michael

cranswick
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Joined: Mon Feb 27, 2012 2:10 am

Re: Ontario Drive Clean and P0401

Post by cranswick » Sat Apr 26, 2014 9:02 am

thanks Mike, good luck.

hackish
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Re: Ontario Drive Clean and P0401

Post by hackish » Sun Apr 27, 2014 2:13 pm

Think I found you a solution. How easy is it to get this code to appear? Ie if it's relatively easy then I have a test but if it's really random then it could take a while to figure out if it's gone or not. I think if you're cruising along with the coolant above 75C and the RPM is between 1000-1900 and the intake air temp is above -10c and your foot is off the gas it runs the test. Wow.

-Michael

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