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Car Forum / Mercedes-Benz Cars / June 2007

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89 560SL starts then stalls

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Keyser Soze - 04 Jun 2007 14:32 GMT
We started up our 560SL after sitting for the winter. It ran fine, up to
temp and then, when slowly going up a hill stalled. Since then it will start
right away but stalls while coughing after 5 to 10 seconds.

The car had a half tankfull of gas and we've tried Gumount and dry gas. Any
ides. Thanks.
Robert Klemme - 04 Jun 2007 15:20 GMT
> We started up our 560SL after sitting for the winter. It ran fine, up to
> temp and then, when slowly going up a hill stalled. Since then it will start
> right away but stalls while coughing after 5 to 10 seconds.
>
> The car had a half tankfull of gas and we've tried Gumount and dry gas. Any
> ides. Thanks.

This sounds remotely similar to something a car of ours had once.  In
that case it was dirt inside the gas tank.  Sometimes the inner walls of
the tank corrode if the tank is not kept full over longer periods of
time and the rust then clogs fuel flow.

HTH

    robert
Tiger - 04 Jun 2007 15:40 GMT
I had that happens to me too... It is the fuel pump relay. Check the date
stamped on the side of it... if it is the same year as your car... you are
way overdue.

It will say like 05 89... which is fifth week of 1989.
-->> T.G. Lambach <<-- - 04 Jun 2007 16:27 GMT
Fuel starvation; replace the fuel filter.
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© 2007 T.G.Lambach. Publication in any form requires prior written
permission.

Keyser Soze - 19 Jun 2007 15:24 GMT
> We started up our 560SL after sitting for the winter. It ran fine, up to
> temp and then, when slowly going up a hill stalled. Since then it will
> start right away but stalls while coughing after 5 to 10 seconds.
>
> The car had a half tankfull of gas and we've tried Gumount and dry gas.
> Any ides. Thanks.

As a follow-up. I got under the old girl and found the fuel filter. For
those uninformed, it's large and is part of the pump assembly just forward
of the gas tank.. This model has two pump motors and the filter sits just
above them.

I took a hammer to the filter, trying to dislodge any foreign matter that
may have gummed the works. It WORKED!

The plan now is to run the car up on ramps and replace the filter.

PS the car radiator let loose a blast of steam. It's cracked where the upper
radiator attaches. OH well!
 
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