[urq] No start - situation

[urq]

Yes, no problem.  Your other post was larger than the 25K character limit so
I had to approve it for it to be posted.  It probably would have been
preferable to let the interested parties follow the link to Phil's site . in
fact I'm going to add a link to it on the yahoo group, but no post from a
member is thrown away by the server, only queued up for me to disposition.  

 

The problem is that the resistance measurement does not guarantee
functionality, or malfunction for that matter.  It is primarily intended to
find short and open circuits.  Fortunately the test you ran on the Hall
sender is a functional test, so you know that is OK.  Since things seem to
be working, the next step would be to check the flywheel teeth and reference
pin to make sure they are good . if that all looks OK you may want to try
replacing (or perhaps exchanging) the reference and speed sensors . or swap
in another ECU if you can get one to try . 

 

Steve Buchholz

 

 

From: Keith Lloyd [mailto:spotatashleys at hotmail.com] 
Sent: Friday, April 09, 2010 7:36 AM
To: urq at pacbell.net; urq at audifans.com
Subject: RE: [urq] No start - situation

 

Hi Steve
my posting below seemed to get on the list ahead of my epic one which I
wrote first and which contains my test results.
I can confirm that the ECU is receiving battery voltage 12.4v when ignition
is switched on. The battery is brand new yesterday and fully charged.
Re: The timing sensors - I will admit to being a little confused by Phil Ps
text- they have the correct resistance according to the initial tests but
Phil says "if bad, proceed" which suggested to me that if they were in spec,
you accept as good and move on to test the next component. But at the end of
the section, it says, "if the sensor passes the test, replace the sensor" I
don't get it.
Could be that I've read and tried so much I can't see the wood for the trees
now.
Just going to check the earth straps around the engine bay now and double
check.#
Thanks again
Keith  
 
> From: urq at pacbell.net
> To: urq at audifans.com
> Date: Fri, 9 Apr 2010 07:19:19 -0700
> Subject: Re: [urq] No start - situation
> 
> No. The ignition side of things is an output and would not affect the
basic
> inputs you describe. 
> 
> If you believe the timing sensors are working properly you may want to
> verify that the grounding at the intake manifold is good. I'd even try
> keeping a charger attached to the battery to ensure that the battery
voltage
> is OK. How have you tested the sensors? Have you verified that the ECU
> itself is getting power?
> 
> Steve Buchholz
> 
> -----Original Message-----
> From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On Behalf
> Of Keith Lloyd
> Sent: Friday, April 09, 2010 6:06 AM
> To: Audifans List List
> Subject: [urq] No start - situation
> 
> 
> Another question - I'm sorry about this - If, for fuel to be delivered the
> ECU needs to receive syncronous signals from TDC sensor, RPM sensor and
hall
> sender - would the fact that the ignition output unit and/or the coil
aren't
> working mean the ECU wouldn't receive these signals? Isn't the function of
> the ignition output unit downstream of the hall sender because if it is I
> have still not explained why the fuel isn't pumping because my tests
suggest
> the RPM, TDC and hall senders are working fine.
> 
> I'll be glad when this is sorted..........as will you all, no doubt!
> 
> Thanks
> 
> Keith
> 
> 
> _______________________________________________
> Audifans urq mailing list
> Manage your list connection: http://www.audifans.com/mailman/listinfo/urq
> http://www.audifans.com/kb/List_information
> 
> Pictures/Polls/Database at: http://autos.groups.yahoo.com/group/urquattro/
> 

  _____  

Get a free e-mail account with Hotmail. Sign-up
<http://clk.atdmt.com/UKM/go/197222280/direct/01/>  now.