Lawrence I assume the car has not covered high mileages and therefore we can rule out items like camshaft or valve gear wear?
A 2001 +8 is almost certainly "Hotwire" injection. (Easy to check , does it have a distributor , Yes= Hotwire : No = GEMS) I have experienced "rev hanging" in my Hotwire +8 , on a few occasions , prior to my fitting a new Tornado chip , after which the problem went away. I don't think the chip solved the problem , but I suspect that the checks that were done on the electronics before fitting the chip did. This system is pretty foolproof , so component faults are relatively rare , 95%+ of the time it is a poor connection in the wiring or electrical/electronic components that is the issue , and these are notoriously tricky to diagnose and track down. Looking at a couple of websites it would appear that the only mechanical issue is a possible carbon build up in the Air Mass Sensor , this can be tested by swapping the component for a known good one, or trying to clean the wire by dipping in an ultrasonic electronic cleaning bath. Regards Andy >________________________________ > From: LawrenceLowe <[email protected]> >To: mogtalk2 <[email protected]> >Sent: Sunday, 20 May 2012, 15:54 >Subject: [mogtalk2] revving at idle V8? > >Hi folks, > >Just back from a super Jockmog weekend down in the Scottish Borders around >Peebles. Dry at all the times that mattered and sunny all the way back >today. Good hotel and a great group of Jockmoggers. > >Anyway, one of our members has a 2001 +8 that has recently started to stick >at around 2000rpm when they take their foot off the throttle. It just >sticks there as the idle speed, drive it above 2000rpm and it operates >normally until you want the revs to drop and then they don't. As the >member lives a long way from any dealer they usually have their Mog >serviced by a well respected local independent but seemingly he is stumped. >The problem doesn't show up every day but once it does it stays until the >car has been rested over a day or two and will then come back, maybe, >without notice during a run. Obviously this is dangerous and needs to be >fixed. > >Before they start taking days off work to visit main dealers is there a >known issue that can cause this? > >Cheers, >Lawrence > > > > >------------------------------------------- >View posts on The Mail Archive >http://www.mail-archive.com/[email protected]/ >[http://www.mail-archive.com/[email protected]/] > >Modify Your Subscription: https://www.listbox.com/member/?&; >Powered by Listbox: http://www.listbox.com > > > ------------------------------------------- View posts on The Mail Archive http://www.mail-archive.com/[email protected]/ [http://www.mail-archive.com/[email protected]/] Modify Your Subscription: https://www.listbox.com/member/?member_id=22459785&id_secret=22459785-4a39ddf8 Powered by Listbox: http://www.listbox.com
