[s-cars] Cold Stumble - Fuel cutoff?

[Robert Myers]

Or perhaps the fuel pump relay cutting in/out?  Doesn't seem terribly 
likely to me but I guess stranger things have happened.

At 05:03 PM 12/2/2004 -0500, Mark Strangways wrote:

>Ignition switch ?
>
>Dunno...
>
>Mark
>----- Original Message ----- From: "James Shackelford" <93UrS4 at rovershack.com>
>To: <s-car-list at audifans.com>
>Sent: Thursday, December 02, 2004 2:43 PM
>Subject: [s-cars] Cold Stumble - Fuel cutoff?
>
>
>>I still don't know what is causing my issue.  I just drove home from DIA
>>today, and it was bad for most of the drive, the new thermostat that I
>>installed while doing the T-belt is a little colder than the old one.
>>Though, after reading all the post I have some other input.
>>
>>My issue does NOT occur at idle even when 10 degrees like it was today. It
>>idles fine with no issues.
>>It doesn't do it at high boost or in the summer.
>>It feels worse between 1500 and 3000 RPM.
>>It did it today at highway speeds in fourth gear above 4000 RPM.
>>It is a total %100 loss of power, almost like the fuel is being cut off.
>>It doesn't jerk the car as extremely over 4K RPM, probably because the
>>engine is moving fast enough not to jerk.
>>I REALLY am starting to think some fueling issue.  To loose all power for
>>1/2 of a second doesn't indicate 1 or 2 cylinders not firing.
>>It seems very much like a total loss of all spark, or a total loss of all
>>fuel.  It has to be one of those two.
>>
>>Spark?
>>POS are tested good.
>>All coils bad, highly unlikely.
>>New plugs and boots.
>>
>>Fuel?
>>Need to test voltage at fuel pump.
>>Fuel pressure regulator?
>>Will run a thankful of BG44 and see what that does.
>>
>>Still looking,
>>
>>James Shackelford
>>
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>
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Bob
Random Bushism: "One of the most meaningful things that's happened to me 
since I've been the governor - the president - governor - president. Oops. 
Ex - governor. I went to Bethesda Naval Hospital to give a fellow a Purple 
Heart and at the same moment I watched him - get a Purple Heart for action 
in Iraq - and at that same - right after I gave him the Purple Heart he was 
sworn in as a citizen of the United States - a Mexican citizen now a United 
States citizen." George W. Bush, Washington, D.C., Jan. 9, 2004
_____
Robert Myers
Fayetteville
'95 urS6 - Cashmere Grey
_____