SL/R129: SL500 engine cuts out
Thread Starter
Newbie
Joined: May 2008
Posts: 4
Likes: 0
From: Surrey, England
SL500, Dodge Ram SRT10, Audi Urquattro (Rally spec)
SL500 engine cuts out
Hi
New to the site. Can anyone help me? I have a 1991 SL500 that has a cut out issue. It seems to be whenever it feels like it as I can not seem to find any common symptoms. Sometimes it will do it after 10-15 miles, sometimes just a few miles and other times after 30 or 40 miles. An example, the last time was when I came to a stop at a junction I was waiting to pull out for a few minutes and then without warning just cut out. The time before that I was traveling about 60 maybe 70 mph and the again the engine just cut out and came to a stop at the side of the road. In both cases the engine wouldn't start for about 5 minutes, it makes no difference if you leave it and then try to start it or try to start it straight away. I would guess that it is electrical. Any help would be really good.
New to the site. Can anyone help me? I have a 1991 SL500 that has a cut out issue. It seems to be whenever it feels like it as I can not seem to find any common symptoms. Sometimes it will do it after 10-15 miles, sometimes just a few miles and other times after 30 or 40 miles. An example, the last time was when I came to a stop at a junction I was waiting to pull out for a few minutes and then without warning just cut out. The time before that I was traveling about 60 maybe 70 mph and the again the engine just cut out and came to a stop at the side of the road. In both cases the engine wouldn't start for about 5 minutes, it makes no difference if you leave it and then try to start it or try to start it straight away. I would guess that it is electrical. Any help would be really good.
Senior Member
Joined: Jun 2006
Posts: 303
Likes: 1
From: Northern California
It changes all the time
I don't suspect a wiring problem, because that didn't occur until 94 and 95. I suspect a failing crank position sensor. It should be changed anyway if it is original. If your sensor has the long pigtail, the retail is about $150.00. If you have the one sans the pigtail. it is about $60.00. The sensor has a high failure rate.
Good luck
Good luck
Thread Starter
Newbie
Joined: May 2008
Posts: 4
Likes: 0
From: Surrey, England
SL500, Dodge Ram SRT10, Audi Urquattro (Rally spec)
I don't suspect a wiring problem, because that didn't occur until 94 and 95. I suspect a failing crank position sensor. It should be changed anyway if it is original. If your sensor has the long pigtail, the retail is about $150.00. If you have the one sans the pigtail. it is about $60.00. The sensor has a high failure rate.
Good luck
Good luck
Senior Member
Joined: Jun 2006
Posts: 303
Likes: 1
From: Northern California
It changes all the time
Thanks for the vote of confidence, but I'm going to have to retract my statement.Since my post I've run across a wiring issue in an earlier car. I was under the impression it was only 94 95. Follow the other suggestions and check wiring. If all is good, I'd say crank sensor next.
Sorry for the bogus info.
Sorry for the bogus info.
Trending Topics
Newbie
Joined: Jul 2008
Posts: 2
Likes: 0
1999 SL 500 MB
Hi
New to the site. Can anyone help me? I have a 1991 SL500 that has a cut out issue. It seems to be whenever it feels like it as I can not seem to find any common symptoms. Sometimes it will do it after 10-15 miles, sometimes just a few miles and other times after 30 or 40 miles. An example, the last time was when I came to a stop at a junction I was waiting to pull out for a few minutes and then without warning just cut out. The time before that I was traveling about 60 maybe 70 mph and the again the engine just cut out and came to a stop at the side of the road. In both cases the engine wouldn't start for about 5 minutes, it makes no difference if you leave it and then try to start it or try to start it straight away. I would guess that it is electrical. Any help would be really good.
New to the site. Can anyone help me? I have a 1991 SL500 that has a cut out issue. It seems to be whenever it feels like it as I can not seem to find any common symptoms. Sometimes it will do it after 10-15 miles, sometimes just a few miles and other times after 30 or 40 miles. An example, the last time was when I came to a stop at a junction I was waiting to pull out for a few minutes and then without warning just cut out. The time before that I was traveling about 60 maybe 70 mph and the again the engine just cut out and came to a stop at the side of the road. In both cases the engine wouldn't start for about 5 minutes, it makes no difference if you leave it and then try to start it or try to start it straight away. I would guess that it is electrical. Any help would be really good.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Newbie
Joined: Oct 2009
Posts: 3
Likes: 0
1964 Cadillac
I'm having a similar issue with a 1991 500SL. Has the long pigtail. Ordered one, have it in hand, will install in the morning. This particular car is a complete no start. Began with running poorly, stalling and hard to restart, no rhyme or reason to any of it.
I'll post the result of the replacement crank sensor tomorrow.
Wayne
Austin, TX
I'll post the result of the replacement crank sensor tomorrow.
Wayne
Austin, TX
Newbie
Joined: Oct 2009
Posts: 8
Likes: 0
From: Houston, Texas
1995 SL500, 2008 GL450, 2005 G35
Check with wiring harness and replace the caps and rotors. Chances are the caps and rotors are worn out. The caps and rotors take only an hour or so to change and are cheap, relatively speaking.
