SLK/R170: SLK Chuggs after 20 miles or so, have to turn ignition off
Thread Starter
Newbie
Joined: Jan 2008
Posts: 3
Likes: 0
230 slk r170
SLK Chuggs after 20 miles or so, have to turn ignition off
Hi all, I have searched most forums for an answer to this problem, so anything you can advise me is appreciated.
I have a 98 merc slk R170. Each time I start it, it works fine for approx 20 miles. When it changes gear a couple of times, say at a roundabout, it then stutters and then chuggs along. It still changes gears fine and responds to the throttle, but it just "chuggs". If I pull over and turn ignition on and off, it works as normal for another 20-30 miles.
Any ideas ?
I know a mechanic who has a decent diagnostics, but nothing comes up. Could it be the cat ?
Any help appreciated !
Thanks
Nick
I have a 98 merc slk R170. Each time I start it, it works fine for approx 20 miles. When it changes gear a couple of times, say at a roundabout, it then stutters and then chuggs along. It still changes gears fine and responds to the throttle, but it just "chuggs". If I pull over and turn ignition on and off, it works as normal for another 20-30 miles.
Any ideas ?
I know a mechanic who has a decent diagnostics, but nothing comes up. Could it be the cat ?
Any help appreciated !
Thanks
Nick
Thread Starter
Newbie
Joined: Jan 2008
Posts: 3
Likes: 0
230 slk r170
Cheers Bazzle
Thanks Bazzle. I was hoping you would answer, I forgot about advice I have read before on the K40 relay. Do you still have any photos you could attach on this post ? (I have googled and can see you have posted on other sites, but I am not a member so cannot view your attachments)
I would probably try the K40 first as it does sound more electrical than anything else.
Would the Maf be an issue all the time if it was at fault ? Thanks again !
Nick
I would probably try the K40 first as it does sound more electrical than anything else.
Would the Maf be an issue all the time if it was at fault ? Thanks again !
Nick
Senior Member
Joined: Apr 2005
Posts: 374
Likes: 3
Not sure, these cars sometimes just need each item checked.
Join Benzworld and read Tech stickys there. Take you about 30 seconds.
http://www.benzworld.org/forums/r170-slk-class/
Now if you said it stopped completely and then restarted after a bit I would of said Crank sensor mounted on top of bellhousing.
Bazzle
Join Benzworld and read Tech stickys there. Take you about 30 seconds.
http://www.benzworld.org/forums/r170-slk-class/
Now if you said it stopped completely and then restarted after a bit I would of said Crank sensor mounted on top of bellhousing.
Bazzle
Last edited by bazzle; Jan 29, 2008 at 04:17 AM.
