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[Plucka]

Hi All,
I'm having an issue with my 2001 Jimny (M13A EFI Engine) not being able to maintain a stable idle when coming to a stop.

I recently had the issue of the EFI going crazy when trying to travel at speeds over 80, which i have solved by replacing the crank and cam sensor, however it has also alway had this idle problem since i got it.

It only seems to happen when i'm coming to a stop or if i'm returning to a normal idle after the engine has had some revs which makes me think its occuring when the engine goes from its fast idle to the slow idle. Also if the aircon is on or not it will also still occur.

The idle will sit at about 1K rpm for a few seconds after coming to a stop, and then will drop back to 700 rpm (or 900 if the aircon is on), but then after a few seconds it will drop right down like it is about to stall (about 200 rpm) and then will come back up (it will also jump back up if i pump the gas).

My initial thoughts were that i might have a vacumn leak somewhere, however i've been unable to find one, although i have limited knowledge on EFI systems and to me it is hard to hear the hiss of a vacumn leak over the sound of the engine revs.

I'm just about to give up and take it to a mechanic, however any info that anyone may have on this problem, or if you've had a similar issue would be appreciated.

cheers,
Luke