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Engine turns over but will not start

Tiny
AUSSIEMICK63
  • MEMBER
  • 1996 AUDI A4
  • 2.6L
  • V6
  • FWD
  • AUTOMATIC
  • 120,000 MILES
Hi my sons 1996 Audi a4 v6 b5 auto will not start the engine turns over the car has been draining the battery if not started after 2 days it becomes flat! I have recharged battery now reading 12.63 volts when under load ( stating) 11.00 volts I will give you more info as required.

aussiemick63

I have added some pictures to show how far I have gone
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Saturday, December 28th, 2013 AT 9:52 PM

26 Replies

Tiny
EXOVCDS
  • MECHANIC
  • 1,883 POSTS
You need to check for spark & fuel. Once you know which is missing, we
can suggest what the cause might be.

The drain on the battery is probably a separate issue.

Thomas
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Saturday, December 28th, 2013 AT 10:11 PM
Tiny
AUSSIEMICK63
  • MEMBER
  • 14 POSTS
Hi Exovcds, I can check the spark ok but how do I check the fuel?

Aussiemick63
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Saturday, December 28th, 2013 AT 10:29 PM
Tiny
AUSSIEMICK63
  • MEMBER
  • 14 POSTS
Hi Exovcds, I just checked for spark by putting a screw driver into the lead and placing next to the top inlets ontop of the motor and saw no spark see photo.

Aussiemick63
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Saturday, December 28th, 2013 AT 10:49 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Do you have any code reader to read codes?Or a multi meter to do some testing?
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Saturday, December 28th, 2013 AT 11:02 PM
Tiny
AUSSIEMICK63
  • MEMBER
  • 14 POSTS
Hi Thomas, my reader will not connect keeps coming up with error can not connect?

This in itself worries me that I may have a computer failure?

Michael
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Saturday, December 28th, 2013 AT 11:23 PM
Tiny
AUSSIEMICK63
  • MEMBER
  • 14 POSTS
Hi Thomas, please see pictures of scan.

Thanks
Michael
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Sunday, December 29th, 2013 AT 12:28 AM
Tiny
AUSSIEMICK63
  • MEMBER
  • 14 POSTS
I do have a meter to check voltages if required!

Michael
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Sunday, December 29th, 2013 AT 12:30 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
See if any of your fuses are blown if you have a blown fuse and there isnt power to the diagnostics link connector you will be unable to read codes like you have now. Have you tried sraring it with the code reader plugged in?
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Sunday, December 29th, 2013 AT 8:00 AM
Tiny
EXOVCDS
  • MECHANIC
  • 1,883 POSTS
Hi Michael, sorry about the late reply (I'm on west coast canada time).

Ignition key on, you should see a MIL / Check engine light. If yes, remove one
of the camshaft position sensor harness plugs and check for voltage across
the outer 2 pins.

If yes, then computer is powered-up and you possibly have a crankshaft
position sensor or a camshaft position sensor that is faulty. The early V6
will not run with faulty camshaft position sensors, where as the later ones
do.

We do not have the 2.6 V6 in north america (we got the 2.8 instead, so I'm
not sure if that rule applies.

Sounds like you are in good hands with Saturntech9. I'm heading out for
a family day trip.

Thomas
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Sunday, December 29th, 2013 AT 8:53 AM
Tiny
AUSSIEMICK63
  • MEMBER
  • 14 POSTS
Hi Saturntech9 thank you for the assistance I have checked all fuses under the dash (see earlier pictures) and all seem ok! I even removed all relays and checked them all seem to be ok, is there a specific fuse that you may know that links the computer, Thomas, sorry have been at work so unable to check ! Will do today the checks you recomend.
I will email later today on my progress

Michael
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Monday, December 30th, 2013 AT 2:07 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Looks like you have a non usa model I only have repair info on usa models. But lets try this see if there is red wire with black stripe going to the connector you hook the scan tool up too?See if that has battery voltage?Also if there is brown wire going to the same connector see if there is less then 2 ohms to ground?
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Monday, December 30th, 2013 AT 2:39 PM
Tiny
AUSSIEMICK63
  • MEMBER
  • 14 POSTS
Hi Saturntech9 I will check today! The scanner does have power as I do get the individual selections come up only when selected they do not connect? I will take some more pictures to show set up of wiring etc, I do have power to the ignition switch and I do have lights indicators and air-con fan, I don't have spark at plugs no power electric windows or sunroof.

Cheers
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Wednesday, January 1st, 2014 AT 11:19 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Alright keep me posted.
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Wednesday, January 1st, 2014 AT 12:03 PM
Tiny
AUSSIEMICK63
  • MEMBER
  • 14 POSTS
Hi Saturntech9, red wire with black stripe= 12.51 volts brown wire to ground 1.5 ohms there is also a light green wire which has no volts.

Cheers
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Wednesday, January 1st, 2014 AT 9:29 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
The light green wire to the connector is your data line to the computer. Did you check what thomas suggested?If not please do that now and let me know what you find?
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Thursday, January 2nd, 2014 AT 8:07 AM
Tiny
AUSSIEMICK63
  • MEMBER
  • 14 POSTS
I am going out for the day ! I will check this afternoon when I get back and let you know.

Cheers
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Thursday, January 2nd, 2014 AT 2:05 PM
Tiny
AUSSIEMICK63
  • MEMBER
  • 14 POSTS
Hi Saturntech9, I pulled the harness connector off and tested both female ends of the harness and turned on the key no voltage on either pin.

Michael
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Thursday, January 2nd, 2014 AT 11:21 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
So does the check engine light come on when you turn the key to the run position?
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Friday, January 3rd, 2014 AT 8:47 AM
Tiny
AUSSIEMICK63
  • MEMBER
  • 14 POSTS
I have no dash lights at all? I only get the mileage to show up if I turn on the lights otherwise nothing is showing on the dash.
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Friday, January 3rd, 2014 AT 1:47 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Have you checked all the fuses?Also why did you tear everything apart?The radio wires look like a mess. What happened there?I know with a aftermarket radio install on a volkswagon you have to be careful using a scan tool on the car. Not sure about the audis are like that. Hey thomas you can jump in anytime you work on these cars everyday.
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Friday, January 3rd, 2014 AT 2:28 PM

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