lucky570

she wont start again, seems like its not getting any or enough fuel to turn over, crank and crank and it wont turn over, a few months ago I changed the fuel pump and it lasted around a month then put another in and it lasted around 2 months give or take,when I check for voltage at the pump its less than 12volts, but if I make jumper at the relay I get 12.45 or something close to that at the pump,so I put a brand new relay in and still nothing, I can get it to start for a few seconds with a little starting fluid it will idle at 1000 rpm for a sec and die so Im guessing its only starting off the fluid,when I jumper the relay and the pump runs constant it almost starts, it sort of sputters and dies, Im thinking that the pump is a roach and not picking up enough fuel to pressurize the system, and there is gas in the tank,I opened up the fuel pump hatch to make sure. When I vagd it the other day the only error that came up is this one-
00771 - Fuel Level Sensor (G)
30-10 - Open or Short to Plus - Intermittent
any ideas would be greatly appreciated, thanks

lucky570

Is it possible to get two bad pumps?,they are made by Meyle,what brand should I buy to replace it with?

sheepers

I would turn on the fuel pump, disconnect fuel line at the rail, and see how much fuel gets pumped out per minute.

I think some cars have port at the rail to check for fuel pressure, not sure about our cars.

Have you checked fuel filter? I had a filter on a Ford so dirty that it lean'ed the mixture enough to fail a smog check.

iilan

what is less than 12v at the pump specific number??

you may have unwanted resistance on that cable measure voltage drop on the cable that can be the reason you are not getting the correct voltage at the pump

lucky570

Been busy lately and just got to play around with the car today, I pulled the fuel pressure regulator off of the fuel rail and jumped the fuel pump relay to see if fuel was getting up there, lots of fuel came out onto the motor, so I replaced the regulator and tried to start the car, with the gas pedal to the floor it seemed like it was trying to start so I kept cranking it and it started but was running ruff, I shut it off and replaced the fuelpump relay and it started back up still running ruff,I moved the car around infront of my house but it was only idling when I did this,turned it off and on 2 more times,started right back up but was running ruff,rev it up and it would almost stall but catch itself, pulled some codes, but I thought most of them were from starting it without the fuelpump relay, does that sound right?


Tuesday,08,September,2009,00:01:41:11287
VCDS Version: Release 908.0
Data version: 20090830


Chassis Type: 4B - Audi A6 C5
Scan: 01 02 03 06 08 15 16 17 18 34 35 36 37 45 55 56 57 65 67 75
76 77

VIN: WAULT64B83N056775
-------------------------------------------------------------------------------
Address 01: Engine Labels: 06C-909-559-ASN.lbl
Part No SW: 8E0 909 559 E HW: 8E0 909 059
Component: 3.0L V6/5V G 0003
Coding: 0016752
Shop #: WSC 02325 785 00200

19 Faults Found:
17819 - Secondary Air Injection System; Bank 2: Insufficient Flow
P1411 - 002 - Lower Limit Exceeded - MIL ON
17831 - Secondary Air Injection System; Bank 1: Insufficient Flow
P1423 - 002 - Lower Limit Exceeded - MIL ON
16706 - Engine Speed Sensor (G28): No Signal
P0322 - 004 - No Signal/Communication - Intermittent
16705 - Engine Speed Sensor (G28): Implausible Signal
P0321 - 008 - Implausible Signal - Intermittent
17833 - EVAP Purge Valve (N80): Short to Ground
P1425 - 002 - Lower Limit Exceeded - Intermittent
17880 - EVAP Leak Detection Pump: Short to Ground
P1472 - 002 - Lower Limit Exceeded - Intermittent
17843 - Secondary Air Pump Relay (J299): Short to Ground
P1435 - 002 - Lower Limit Exceeded - Intermittent
17829 - Secondary Air Injection Solenoid Valve (N112): Short to Ground
P1421 - 002 - Lower Limit Exceeded - Intermittent
17529 - Oxygen (Lambda) Sensor Heating Circuit: B2 S2: Short to Ground
P1121 - 002 - Lower Limit Exceeded - Intermittent
17525 - Oxygen (Lambda) Sensor Heating Circuit: B1 S2: Short to Ground
P1117 - 002 - Lower Limit Exceeded - Intermittent
17908 - Fuel Pump Relay (J17): Electrical Malfunction
P1500 - 004 - No Signal/Communication - Intermittent
17522 - Oxygen (Lambda) Sensor; B1 S2: Internal Resistance too High
P1114 - 002 - Lower Limit Exceeded
17548 - Oxygen (Lambda) Sensor; B2 S2: Internal Resistance too High
P1140 - 002 - Lower Limit Exceeded
17638 - Fuel Injector for Cylinder 6 (N84): Short to Ground
P1230 - 002 - Lower Limit Exceeded - Intermittent
17633 - Fuel Injector for Cylinder 1 (N30): Short to Ground
P1225 - 002 - Lower Limit Exceeded - Intermittent
16486 - Mass Air Flow Sensor (G70): Signal too Low
P0102 - 002 - Lower Limit Exceeded
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 001 - Upper Limit Exceeded
16688 - Cylinder 4: Misfire Detected
P0304 - 001 - Upper Limit Exceeded
16689 - Cylinder 5: Misfire Detected
P0305 - 001 - Upper Limit Exceeded
Readiness: 0000 0001

-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 01V-927-156.lbl
Part No: 4B0 927 156 FF
Component: AG5 01V 3.0l5V USA 0910
Coding: 0001002
Shop #: WSC 02325 785 00200

1 Fault Found:
18265 - Load Signal: Error Message from ECU
P1857 - 003 - Mechanical Failure
Freeze Frame:
RPM: 1152 /min
RPM: 1120 /min
RPM: 0 /min
(no units): 0.0
Torque: 56.0 Nm
Temperature: 19.0°C
T.B. Angle: 0.0°
(no units): 1.0


-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 4B0-614-517.lbl
Part No: 4B0 614 517 R
Component: ABS/ESP allrad 2330
Coding: 06497
Shop #: WSC 02325

1 Fault Found:
18265 - Load Signal: Error Message from ECU
P1857 - 35-00 - -

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 4B0-959-655-AI84.lbl
Part No: 4B0 959 655 Q
Component: Airbag 8.4EP 2001
Coding: 0000607
Shop #: WSC 02325 785 00200

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 4B0-907-487.lbl
Part No: 4B0 907 487 F
Component: Lenkradelektronik D01
Coding: 01005
Shop #: WSC 02325

1 Fault Found:
01301 - Control Module for Voice Recognition (J507)
49-10 - No Communications - Intermittent

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 4B0-920-xxx-17.lbl
Part No: 4B0 920 981 N
Component: KOMBI+WEGFAHRS. VDO D12
Coding: 02262
Shop #: WSC 08166
WAULT64B83N056775 AUZ7Z0B2261237

1 Fault Found:
00771 - Fuel Level Sensor (G)
30-10 - Open or Short to Plus - Intermittent

-------------------------------------------------------------------------------
Address 35: Centr. Locks Labels: 4B0-962-258.lbl
Part No: 4B0 962 258 M
Component: Central Lock/Alarm D37
Coding: 15885
Shop #: WSC 02325

1 Fault Found:
01369 - Alarm triggered by Hood Switch
35-00 - -

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr Labels: None
Part No: 4B0 959 760 B
Component: Sitzmemory R1 F 0102
Coding: 00001
Shop #: WSC 00000

1 Fault Found:
00668 - Supply Voltage Terminal 30
07-00 - Signal too Low

-------------------------------------------------------------------------------
Address 55: Xenon Range Labels: 4Z7-907-357.lbl
Part No: 4Z7 907 357
Component: dynamische LWR D09
Coding: 00050
Shop #: WSC 02325

1 Fault Found:
00532 - Supply Voltage B+
07-10 - Signal too Low - Intermittent

-------------------------------------------------------------------------------
Address 56: Radio Labels: 8E0-035-1xx-56.lbl
Part No: 4B0 035 195 L
Component: symphony II NP2 0051
Coding: 00225
Shop #: WSC 01404

1 Fault Found:
00858 - Connection; Radio ZF Output to Antenna Amplifier
44-00 - Short Circuit

-------------------------------------------------------------------------------
Address 75: Telematics Labels: None
Part No SW: 8E0 035 616 A HW: 8E0 035 616 A
Component: Telematik USA1
Coding: 0002303
Shop #: WSC 08166 444 00177

1 Fault Found:
01531 - Emergency Battery
002 - Lower Limit Exceeded - MIL ON

End -------------------------------------------------
the air injection codes were already there I have some vac leaks, I had to run somewhere for a few hours when I came home I cleared the codes and now it wont start again. After I cranked it for awhile I ran vagcom again and no codes returned, so any ideas?

2.7Lturbo

dude putting the pedal to the floor when trying to start the car wont do anyting, its not a carbeurated engine, you cant flood it

lucky570

for now, I think the gas gauge is off maybe, put 5 gallons in and she started up, drove it around for about a hour seems fine,except for the exhaust leak but now I guess I can take it to get fixed, I hope ha.

2.7Lturbo

is this a problem with these cars? i know they have 3 level senders but dman i always feel like im rolling the dice when i turn my car on what the gas gauge will read , regardless of what it read when i parked it

meternerd

Probably way too late to answer this post, but my 01 2.7T did exactly the same thing. When hot, hard or no start...tried sometimes but wouldn't keep running. After sitting for 20 or 30 minutes, it started and ran fine. New CTS fixed it. 10 minute job to change it. No code ever showed up.

gcheddar

CTS? What's that stand for?