[V8] no hot start and no codes? Not a v8 at issue same diagnostic tree

[qshipq at aol.com]

00522 is the engine temp sender and it should 'also' indicate a short to ground or a short to positive.  IME G62 don't give a no start problem, they make a cold start or idle/acceleration during warm-up problem.  I'd spend a lot of time diagnosing the FPR.  Disconnecting the manifold reference line should give you maximum pressure in the rail.  Sound like if you pinch the return line, you get it to start.  That's a clogged fuel filter, leaking fuel line, bad pump or bad FPR, none of which will generate a code (the result of these problems might present a rogue code)

Try starting it on starting fluid.  If it runs, then dies, you have a fuel delivery problem (see above).

HTH

Scott J



 


 

 

-----Original Message-----
From: ron_01056 at yahoo.com
To: eric anderson <stikboy2002 at yahoo.com>
Cc: v8 at audifans.com
Sent: Sun, Sep 5, 2010 8:00 pm
Subject: Re: [V8] no hot start and no codes?


I think it would. I had a 97 A6qa and I remember a temp sensor code being thrown 

on it.



 Eric, when I had issues with my A6's i've posted on www.quattroworld.com and 

got great suggestions/remedies to any issue I have had with those cars.



When I just recently had issues with my wife's 95 a6 they were similar to what u 

described and it ended up being the FPR.



 Ron



Sent from my Verizon Wireless BlackBerry



-----Original Message-----

From: eric anderson <stikboy2002 at yahoo.com>

Sender: v8-bounces at audifans.com

Date: Sun, 5 Sep 2010 17:52:54 

To: <v8 at audifans.com>

Subject: Re: [V8] no hot start and no codes?



ecu temp sensor would throw a code would it not?.......it's got lots of fuel 

pressure from the pump.

something is going wrong on the rail maybe

this is hell!



--- On Sun, 9/5/10, ron_01056 at yahoo.com <ron_01056 at yahoo.com> wrote:



From: ron_01056 at yahoo.com <ron_01056 at yahoo.com>

Subject: Re: [V8] no hot start and no codes?

To: "Ed Kellock" <ekellock at gmail.com>

Cc: v8 at audifans.com

Date: Sunday, September 5, 2010, 5:00 PM



Those cars are OBD2, so if it was a temp sensor then it would throw a code.

I do agree that it's fuel related. I wanted to say fuel pump relay....but the OP 

said it would start if he clamped off the supply line or if the purge valve is 

disconnect.



 So I don't know…



 Ron



Sent from my Verizon Wireless BlackBerry



-----Original Message-----

From: "Ed Kellock" <ekellock at gmail.com>

Date: Sun, 5 Sep 2010 17:51:53 

To: <ron_01056 at yahoo.com>; 'eric anderson'<stikboy2002 at yahoo.com>

Cc: <v8 at audifans.com>

Subject: RE: [V8] no hot start and no codes?



I'll take a wild stab at it...  mina fuel rail disconnected made me think

ok, too much fuel... ecu temp sensor, back side of passenger side head.



Ed

 





-----Original Message-----

From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf Of

ron_01056 at yahoo.com

Sent: Sunday, September 05, 2010 4:13 PM

To: eric anderson

Cc: v8 at audifans.com

Subject: Re: [V8] no hot start and no codes?





So that's all we have to go by to try and help u diagnose ur problem? 

What u said doesn't make sense.



 Ron



Sent from my Verizon Wireless BlackBerry



-----Original Message-----

From: eric anderson <stikboy2002 at yahoo.com>

Sender: v8-bounces at audifans.com

Date: Sun, 5 Sep 2010 14:38:27 

To: <v8 at audifans.com>

Subject: [V8] no hot start and no codes?



Fuel pressure 55 lbs

No codes ( brand new computer)

car will only start if the main fuel rail is disconnected







      

_______________________________________________

Audifans V8 mailing list

Send posts to: mailto:V8 at audifans.com

Manage your list connection: http://www.audifans.com/mailman/listinfo/v8



You can help keep the audifans site running by shopping at

http://audifans.com/shop/







_______________________________________________

Audifans V8 mailing list

Send posts to: mailto:V8 at audifans.com

Manage your list connection: http://www.audifans.com/mailman/listinfo/v8



You can help keep the audifans site running by shopping at

http://audifans.com/shop/



No virus found in this incoming message.

Checked by AVG - www.avg.com 

Version: 9.0.851 / Virus Database: 271.1.1/3114 - Release Date: 09/05/10

00:34:00



_______________________________________________

Audifans V8 mailing list

Send posts to: mailto:V8 at audifans.com

Manage your list connection: http://www.audifans.com/mailman/listinfo/v8



You can help keep the audifans site running by shopping at http://audifans.com/shop/









      

_______________________________________________

Audifans V8 mailing list

Send posts to: mailto:V8 at audifans.com

Manage your list connection: http://www.audifans.com/mailman/listinfo/v8



You can help keep the audifans site running by shopping at http://audifans.com/shop/



_______________________________________________

Audifans V8 mailing list

Send posts to: mailto:V8 at audifans.com

Manage your list connection: http://www.audifans.com/mailman/listinfo/v8



You can help keep the audifans site running by shopping at http://audifans.com/shop/