[s-cars] Sputter, No Boost, Stall, No Start......

[Matthew Russell]

It's a good thought, Jim as there is a certain level of power that the FI system needs to operate properly. 

Measure voltage across the jumper connections under the hood with the car idling. Should be 13.5-14.5 volts for a healthy charging system. If less than 13 I'd be concerned.  

But ignition coils/POS failure is a good idea. As is a boost leak. I'd pull the injector connectors one at a time at idle to see if it makes a change. Healthy cylinders with no apparent misfire will change the idle smoothness. A misfiring cylinder will cause NO change when the connector is removed. 

HTH, Matt in CO

95.5 s6a Europa sold
95.5 s6a black totaled
92 s4 sold and parted. 


Sent from an iDevice. Sorry. 


On Apr 2, 2013, at 1:00 PM, s-car-list-request at audifans.com wrote:


> Date: Tue, 2 Apr 2013 12:49:37 -0600
> From: "Jim Fleischer" <jim at almgt.com>
> To: <s-car-list at audifans.com>
> Subject: [s-cars] Sputter, No Boost, Stall, No Start......
> Message-ID: <16BC598665404BC289D88E23F45FC1BB at jim5fc968a6e6a>
> Content-Type: text/plain;    charset="iso-8859-1"
> 
> Okay, this is a longshot, but might make some sense......
> 
> My battery has had a difficult time holding a charge for more than a couple of days this winter.....it would fire right up with a jump pack and be good as long as I drove the car everyday, but I'm wondering if there is enough juice in it to fire up the ignition system and keep it running properly?  My voltmeter readings are good when the car is running, just no holding of a charge and some boost issues when into the throttle getting worse lately before this episode yesterday.....
> 
> Going to replace the battery anyway.....doubt if that's it, though.  Thoughts?
> 
> Jim Fleischer