Quote:
Originally Posted by gmercoleza
Different car, but my E320 behaved the same way when it was hot and you attempted to restart it after sitting for a few minutes. Turned out to be the fuel pressure regulator - I guess the pressure leaked down over time with the car sitting, probably resulting in a somewhat lean mixture. Issue was likely masked when cold, since the mixture on cold startup is enriched.
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That sounds likely. I haven't driven it since Monday because I'm waiting for a new blower motor to arrive to fix my HVAC. When I was verifying the blower motor was bad on Tuesday I turned the ign. key to RUN
without starting and noticed that the
fuel pumps ran for about 10 seconds before stopping. This was strange since they usually only run for about 1-2 sec under that condition from previous experience, so maybe the system leaked down during the day on Tuesday...possibly from a faulty regulator (or accumulator??). If that's the case, it still leaves me scratching my head why it starts and runs for a few seconds before stalling.
I'll check electrical values when I get a chance. Thanks for all the input!
This car has had problems with the idle air valve before (stalling while driving in traffic, specifically during left turns at stop lights
) but that was fixed by a shop about a year ago by cleaning the valve. The car still takes a few seconds before restarting with my foot at 50% anyway, so I ruled out the idle speed control system. Speaking about the idle valve...another tangent...is it possible to replace the wiring harness for the idle air valve and temp sensor? The insulation has cracked off at the connections of these instruments but does not touch anything or short out. I was planning on replacing those wires soon, but it seems they are just a small twig on the monstrous tree of a wiring harness and impossible to replace from end-to-end.