Couldn't spare the $100 to buy a new ISC and had a spare dicky one lying around for my 2.6L, so I did what the book told me NOT to do and pulled it apart.

I tried it out first to see if the electric side was working. It was buzzing away fine, but not a lot of movement in the plunger.

So undid the 3 screws on it and gently prised the motor out of it. Then I used carby cleaner spray in the nozzle bit and worked the plunger in and out until it freed up and seemed to be working fine. Dried it all off a bit and put it back together. When I plugged it back into the harness, it had a fair bit more movement.

Then I popped it in and started up. It still idled a bit low in 'D' and with the air con on with a little vibration, but it wasn't missing or rough anymore.

I had cleaned the sticky carbon crap off it and it seemed to do the trick. I guess since it's stuffed anyway a couple of buck's worth of cleaner might save some money, at least for a while.

Don't spray the stuff in the electrical bits though, as it leaves a conductive coating behind. Also equally important - don't lose the little spring inside the motor when you pull it apart.

Carby cleaner also cleans sparkplugs quite well, but you'll have to rinse them off in petrol or something like that or they won't work too well for a little while.

Might be able to do a photo guide later if anyone would like....

I have also had 2 each with one burnt out coil but the other OK. Took the good coil from each and made up a working ISC.

Rob