1986 560sl dies on right turns??? - PeachParts Mercedes-Benz Forum

hpcbmw · #1 01-21-2009, 09:24 PM

I'm trying to help troubleshoot my mother's Mercedes. It's a 1986 560sl with about 60k miles on it. It ran fine when she lived in Nevada, but she recently moved to Salem, Oregon, and that's when the trouble began.

The car is not a daily driver. It was driven 1000 miles from Nv to Oregon last summer and ran fine. Then it was parked for about a month. When started, it ran rough. The next day, it would turn over, but wouldn't start. It was towed to a MB stealership who replaced the fuel lines and pulled the fuel tank to clean the tank. Now, it will run, but dies when turning right. The dealership wants to replace the ignition control module and a CISE injection electronic hydraulic unit - costing about $3000.00.

Any ideas why the car would die on turning right? I can't see the ignition control module being the culprit. I assume the dealer is just going to replace parts at $3000 a pop until she runs out of money, or they get lucky. Any ideas on a reputable Mercedes mechanic near Salem, Oregon?

Thanks!

Hirnbeiss · #2 01-22-2009, 07:14 AM

It could be a psychological problem (see the movie Zoolander, where Derek can't turn left).

Seriously, I don't know of any specific problem where only a right turn will cause a stall - there's probably some other problem where the turn is just coincidence, and I agree, I wouldn't start at the control module. I would go through the basics: plugs, vacuum lines, wiring etc an dtehn look for an independednt for further diagnosis.

tinypanzer · #3 01-23-2009, 07:22 PM

I was having a very similar issue on my 300SE. It died twice on right turns, and once on a left turn.

I never did figure out what the problem was, it seems to have just gone away.

There is an excellent sudden stalling fact sheet, do a search on "SSS".

I suspect in your case it may be a fuel filter or fuel pump related issue, but there are many things on this car that it could be.

I do have some theories, though...

1) Perhaps the fuel sloshing in the tank during the turn exacerbates a fuel pump or filter issue
2) An electrical connection is loose and the force of turning is enough to interrupt it.

Double check the electrical connections to your fuel pump. Perhaps they didn't tighten it enough when they were working on your fuel system. Did they change the fuel filter when they were doing all that cleaning?

Good luck finding your problem. Please post back and let us know what you found out.

-tp

-tp

cth350 · #4 01-24-2009, 06:20 PM

If it makes you feel better (it won't), my 190E 2.6 stalls on left turns rather consistently. Most vexing. -CTH

Paratroop · #5 01-26-2009, 03:44 PM

most likely fuel pumps are going.Had the same problem on my Buick.Make
a right hand turn it would either die or when it got straight it would pick
up again.Changed the fuel pump cured it right up.

tinypanzer · #6 04-03-2009, 03:43 PM

Aww Crap. Looks like after months of no stalling, it's back. Once again, it happened as I was decelerating and making a right turn. Luckily the 126 is a heavy beast and had enough inertia to not only make it into a parking lot, but also to pull into a space.

I'm not really sure where to start. I don't want to just throw parts at this.

Is the OVP a good place to start, or am I wasting my money without testing something first?

Thanks!