Quote:
Originally Posted by Laird Scooby
Its official name is an anti-dieseling valve, also called anti-run-on solenoid, idle valve, idle solenoid and a few others. Usually if it's playing up it will stop it idling completely and also prevent starting, not let it start and idle roughly. Usually they're one of those things that either work or not, no half measures.
Usually if the valve plays up, driving above idle is ok but it won't idle and won't start without throttle.
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Back in the days when I used to worry about having my 340 nicked I wired a hidden switch to this solenoid. The car would start, run for a few hundred yards then stall, and stall again. Caught me out a few times too.