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P0171 with Gasoline and P0174 with LPG ?!

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Old 09-23-2012, 09:52 AM   #1
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Question P0171 with Gasoline and P0174 with LPG ?!

last week i got the P0174 (Bank 2 to lean) fault
Engine was running on Liquid Propane Gas LPG
i have erased it.

and yesterday, i got the P0171 fault (Bank 1 to lean)
running on Gasoline.
2 Minits after Cold Start and driving.
i have erased it while driving,
Engine Hot
and the Code stays away.


Strange ..... !!!!????
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Old 10-07-2012, 07:03 PM   #2
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Update:
Intermittent...
Last Driving, all was normal, the Short Term Fuel Trim at both Banks was nearly equal.

I think, i have a Temperature dependent Leak, i bet its at the PCV System.

OR that....
But, i've fillet the half empty Fuel Tank with E85 (85% Ethanol)
so it may be, that the Injectors are cleaned now.

My Mind... Most time, the Car is running on LPG.
But on the last 300km i leave it on Gasoline and so it may be, that some Injectors, were clogged a little before, and now the Ethanol has cleaned it.
May be!
So i have to watch and investigate.
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