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cam solenoid and P0171 Bank 1 Lean

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Gouws
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Gouws

Re: cam solenoid and P0171 Bank 1 Lean

Post by Gouws » Thu Apr 11, 2019 10:08 am

If any one can tell me a way to test them or what to do to know which one is bugger please giff me advise



EngineeringBloke
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EngineeringBloke

Re: cam solenoid and P0171 Bank 1 Lean

Post by EngineeringBloke » Thu Apr 11, 2019 2:16 pm

Hi Gouws,
Please start a new thread for your transmission issue. This thread concerns an engine cam solenoid, and is unrelated to your issue.



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Re: cam solenoid and P0171 Bank 1 Lean

Post by IslandV70 » Thu Apr 11, 2019 6:33 pm

A fresh clean did nothing :(
Back to the drawing board.



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Re: cam solenoid and P0171 Bank 1 Lean

Post by IslandV70 » Sat Apr 13, 2019 2:50 pm

The vacuum hose that goes back under the intake manifold feels hard and crumbly to the touch. I am sure it will break apart if I pull on it. This is maybe the issue? I might replace it if I can figure out where the other end goes.



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abscate
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abscate

Re: cam solenoid and P0171 Bank 1 Lean

Post by abscate » Sat Apr 13, 2019 2:54 pm

Find the vacuum diagram under the hood.

I’m guessing it ends up at the purge valve and has another leg to the snorkel just before the turbo


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IslandV70
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Re: cam solenoid and P0171 Bank 1 Lean

Post by IslandV70 » Sun Apr 14, 2019 1:40 pm

This seems to be the issue. One hose was just gone!
The diagram does not seem to match the actual hoses the car has. The hose that broke off went over to the air box thermostat.
I plugged that opening and my long term fuel trim is headed down from 24 and seems to be down to about 8 right now. I already bolted that flap in the full cold position.
I still need to replace the other hose too before it breaks off. Note to self - some things die from old age, not mileage. The car currently has 65,000 miles.
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abscate
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abscate

Re: cam solenoid and P0171 Bank 1 Lean

Post by abscate » Sun Apr 14, 2019 2:09 pm

The air box thermostat hose isn’t critical but, yes, you should replace every piece of vacuum tube on a 20 year old car.

The air box hose runs to a connection on the air cleaner, then another hose runs from the same place down to the air door. One is usually white and the other black.


1 SWMBO for 30 years
2 Volvos
3 VWs
4 Careers
5 cats/dogs/gears
6 Perfect Ladies in waiting
7 Drivers
8 Boats- with a big pointy metal thing on top

1999 V70 T5M 56 2005 V70 NA M56 VWs BMW

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