Holy CEL Batman. You'll never guess what the mechanic did next..

[IKE20VA4]

So had a few CEL's lately. Some MIL on, some MIL off.

012555 - Low Pressure Fuel regulation
P310B - 008 - Fuel Pressure Outside Specification - Intermittent

008851 - Fuel Pressure Regulator Valve (N276)
P2293 - 002 - Mechanical Malfunction - Intermittent

001110 - EVAP System
P0456 - 001 - Very Small Leak Detected

008852 - Fuel Pressure Regulator Valve (N276)
P2294 - 004 - Open Circuit - Intermittent

012425 - Signal Line for Fuel Pump Electronics
P3089 - 002 - Electrical Malfunction – Intermittent

001287 - Idle Control System RPM
P0507 - 001 - Higher than Expected. - Intermittent

008583 - Bank 1; System too Lean at Idle
P2187 - 004 - - MIL ON

After a lot of research on wikivag, etc. I have replaced my fuel filter which at 127,000 miles is probably way overdue. That so far seems to have the fuel pressure issues dialed in. Before changing, the LPFP duty cycle was about 77% on average at idle and gradually it has come down to around 50% at idle. I have also ordered a new thrust sensor as I came across that, too. Then on the lean idle and EVAP leak, I replaced the PCV and breather hose and have a new N80 valve on the way.

Not sure on the N276 code though as it refers to the HPFP. I just changed the cam follower like 2k miles ago. Checked it again the other day and when I pulled the HPFP off the valve cover it kept making this hissing noise like it was leaking pressure somewhere. This continued when cycling the piston. Anyone experience that?

HPFP log for reference.
https://onedrive.live.com/redir?resi...nt=file%2cxlsx

[Okedokey]

What mechanic?

[IKE20VA4]

This mechanic!

[sa_seahawker]

I'm thinking there's something going on with the fuel system...

[allstock]

This mechanic!

Click bait.

[Okedokey]

Click bait.

EXACTLY what I was thinking.

[MrBigglesworth]

Are you mapped btw? Or what altitude are you at? Your MAF reading goes quite a bit higher than mine!

[IKE20VA4]

Stage 1 Revo tune. That is all. Maybe 90ft above sea level...


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[Theiceman]

definite click bait approach..

[p0isin]

definite click bait approach..

Is this gawker or buzzfeed now?

[miA4]

The internet is freaking out about these CEL's!!

[Sanjman]

Good reason to
/endthread
/startpetphotos


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[L'Audi]

Good reason to
/endthread
/startpetphotos


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Release the hounds!

[1killera4]

The internet is freaking out about these CEL's!!

Is that a new Mercedes? the CEL?

[allstock]

There's definitely something wrong with the n276 connection. It's not the pump, but a valve. Use the search you'll see what I mean.

[IKE20VA4]

There's definitely something wrong with the n276 connection. It's not the pump, but a valve. Use the search you'll see what I mean.

I've actually read a lot about the n276. It's attached to the pump though. Can't seem to be replaced apart from the pump though?

Thanks for the serious response though..

[p0isin]

Buy a cheap used hpfp and swap them

[IKE20VA4]

Good call...


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[Theiceman]

I just replaced my HPFP due to a failed follower .. is the part shown below the one you need ?

https://www.youtube.com/watch?v=dQw4w9WgXcQ

[Sanjman]

Video doesn't work in Umerika



But here's one:

https://youtu.be/oHg5SJYRHA0

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[tater5387]

[idrinkv8]

Is this gawker or buzzfeed now?

Mechanics hate him! People are fixing CELs now with this one weird tip!


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[Theiceman]

Mechanics hate him! People are fixing CELs now with this one weird tip!


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strangely enough if you eat this one weird food while working on your cell you can lose 10 lbs of belly fat.

[Obsidian]