strange problem

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Jul 2, 2017 | 03:25 PM

audi-v8

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strange problem

hi

i have audi a8L 04 i got problem which is if i refuel tank the car become vibration and wont

drive away even when i try to drive like this

but if the tank is low or quarter it become good and i can drive comfortably what kind of this problem

Jul 2, 2017 | 03:34 PM

Jack88

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From: California

First step is to do a VCDS scan, see what kinds of codes the car has. Does it run any better with the gas cap removed?

Jul 2, 2017 | 03:42 PM

audi-v8

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Quote:

Originally Posted by Jack88

First step is to do a VCDS scan, see what kinds of codes the car has. Does it run any better with the gas cap removed?

i did scan or computer check there is no codes about gas cap but yes you right

i refueled the tank a little bit more than quarter with the door of tank is open its better

but sometimes when i slow speed car is stoped then start it again like this

about the codes i got this

18265
load signal :error
message from ecu
p1857

thx

Jul 2, 2017 | 04:14 PM

audi-v8

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this the scan codes

Jul 2, 2017 | 04:41 PM

Jack88

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From: California

Try unplugging your mass airflow sensor when running poorly and see if that smooths it out any.

Jul 2, 2017 | 04:49 PM

audi-v8

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you mean remove airmass sensor and running the car right??

ok what about the gas fill it or no

Jul 2, 2017 | 06:39 PM

Jack88

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From: California

When the car is running poorly, open the hood and unplug that sensor. If it smooths out, that would point to a fault with that sensor. Shouldn't be related to the fuel level, but the error you are getting seems to have been related to the MAF in other cases. These cars are complicated, so I would at least try this to rule it out.