[s-cars] (no subject)

[Aaron]

Hi Randy,
Can you confirm if all 5 are firing when this occurs?   If not, then the
PSO device would be suspect.  There is a 1 time simple / cheap fix for
this and I can forward more info if needed
Aaron

Randy Carver wrote:

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>Hello!
>
>This is a general question to everyone:
>My 1994 S4 has about 109k miles on it and the engine has just recently
>developed a problem.  It seems to be running very rough, like it is not
>getting enough fuel.  This problem is intermittent, and I cannot detect
>any pattern whatsoever.  It happens when it is cold, hot, idling, or on
>the freeway.  One minute it seems to be running great, and then out of
>nowhere it happens.   When this problem occurs, the car is very
>reluctant to accelerate, but acceleration can be accomplished - just not
>to normal S4 standards.  When this happens on the freeway, for example,
>I can let off the throttle and the vibrations decrease, but not all the
>way. Then when I throttle it again, the vibrations are at their worst.
>When it happens while idling the car shakes a little.  I originally
>detected this about a 1000 miles ago, and it has been steadily worsened
>ever since.
>
>Could the problem be in the fuel injection system?  What would make this
>problem occur so irregularly?  If a hose was blown, wouldn't the problem
>occur 100% of the time?  By the way - this car has not been modified,
>and is totally stock.
>
>I have checked every plug and hose/tube for disconnects or leaks, but
>found nothing.  I also found no evidence of any leakage on my engine.
>Last weekend I discovered that the spark plugs were not torqued down
>properly, but that was not where the problem lied.  I also replaced the
>fuel filter and the air filter last week.
>Any opinions welcome.  Thank you very much!
>
>Randy Carver
>425-337-4467 office
>425-864-5033 cell
>--
>
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