Quote:
Originally Posted by oldtamiyaphile
Problem is the car is now reluctant to cold start. If left for a few days it will start (the ECU always revs to 1500 on start), rev to 1500 stumble and die. When restarted, it will rev to 1500, stumble, and then idle fine.
If left over night it starts, stumbles and then idles fine. Hot starts are no problem.
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What is the voltage after the car sits for a few days? How does it compare to the voltage just a few minutes after turning off the car?
Maybe when the car sits for a while the cap drains lower than normal after starting the vehicle, and then absorbs too much of the output from the alternator after starting to properly supply the ignition coil with adequate juice.