A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.
Hi I've noticed that when my truck is stationary and up to temperature. she's constantly revving up to 900 rpm for a several seconds then dropping down to 650 rpm for a few seconds, then up again etc.
Even Hastiekid noticed it last weekend when he was hooking me up for recovery :whistle:
anyone come across this before ?
could this simply be down to the PCV ( positive crankcase ventilation) valve :huh:
Yeah, it does this. It seems to be happening on other cars and models - the Romanian Suzuki forum has a heated discussion about this happening on the Suzuki SX4, with many opinions which can't be settled without a Suzuki engineer (not mechanic). Car shops will usually say "they all do that".
My opinion is the small "sizes" of everything in the Jimny (alternator, battery, engine) combined with some fast feedback loops give this behaviour. Nothing to be worried I guess.
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