My 5.0 c-n-p project test engine is running well and reliable. The "Godzilla" coils work really well with the ~21-year older pcm technology.
However, I'm having a bit of an annoying issue not related to that. I'm having a recurring PO1409 related to me deleting the EGR vacuum regulator solenoid. I have searched and searched through the bin file and can't quite seem to switch it off entirely. I came across an internet post whereas
someone else did a similar deletion and it was suggested to them to install an appropriate value 10-watt resistor across the two wires for the solenoid to make the pcm think that everything is there and functioning properly. I don't have a problem with doing such if it will keep the check engine light off. Has anyone here had a similar issue and what did you do?
I have an engine swap coming up installing a 1999 Explorer powertrain into an antique Mustang and would like to get this small annoying situation cured on the 5.0 #1 test engine before I move forward with 5.0 #2.
I'm aware that the pcm and engine will function fine with the check engine light on with this PO1409 however I would rather the light only come on if there is a real issue or problem.
Thanks in advance for any input or suggestions.
Recurring PO1409 using CRAI8
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- Posts: 277
- Joined: 2023 Feb 18, 22:25
- Location: Hazel Green Alabama USA
- Vehicle Information: 1997 Mountaineer 5.0 that originally had a wasted spark ignition system. I'm converting to coil-near-plug. I will use a 4.6 Luxury Sedan PCM & modified powertrain harness. It will be reprogrammed to operate the Windsor 5.0.
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- Posts: 6297
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'25 F-150 5L
Re: Recurring PO1409 using CRAI8
just simply disable the egr
pfehp
pfehp
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- Posts: 277
- Joined: 2023 Feb 18, 22:25
- Location: Hazel Green Alabama USA
- Vehicle Information: 1997 Mountaineer 5.0 that originally had a wasted spark ignition system. I'm converting to coil-near-plug. I will use a 4.6 Luxury Sedan PCM & modified powertrain harness. It will be reprogrammed to operate the Windsor 5.0.
Re: Recurring PO1409 using CRAI8
I currently have it set this way:
And this flag is set this way:
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- Posts: 6297
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'25 F-150 5L
Re: Recurring PO1409 using CRAI8
dont forget obdii_mil set it the same as obdii tst
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- Posts: 277
- Joined: 2023 Feb 18, 22:25
- Location: Hazel Green Alabama USA
- Vehicle Information: 1997 Mountaineer 5.0 that originally had a wasted spark ignition system. I'm converting to coil-near-plug. I will use a 4.6 Luxury Sedan PCM & modified powertrain harness. It will be reprogrammed to operate the Windsor 5.0.
Re: Recurring PO1409 using CRAI8
Well, I found 3 here kind of related. Do I set them all to 1 0r 0?
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- Posts: 6297
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'25 F-150 5L
Re: Recurring PO1409 using CRAI8
No, change it from 247 to 183 as it says.
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- Posts: 277
- Joined: 2023 Feb 18, 22:25
- Location: Hazel Green Alabama USA
- Vehicle Information: 1997 Mountaineer 5.0 that originally had a wasted spark ignition system. I'm converting to coil-near-plug. I will use a 4.6 Luxury Sedan PCM & modified powertrain harness. It will be reprogrammed to operate the Windsor 5.0.
Re: Recurring PO1409 using CRAI8
Thanks Michael, that fixed it!
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- Posts: 277
- Joined: 2023 Feb 18, 22:25
- Location: Hazel Green Alabama USA
- Vehicle Information: 1997 Mountaineer 5.0 that originally had a wasted spark ignition system. I'm converting to coil-near-plug. I will use a 4.6 Luxury Sedan PCM & modified powertrain harness. It will be reprogrammed to operate the Windsor 5.0.
Re: Recurring PO1409 using CRAI8
@Michael OBDII_MIL_SW is something that we'll need in READ0...