Hello to all:
I have an '86 560 SL that up until this evening ran perfectly. We were on our way to churh and she just stopped dead. Engine cut off. I pulled over an tried to crank her up but nothing. Tried the usual, pumping gas pedal, etc... Still nothing. After about 10 minutes it started up and we drove her home. I shut the car off, then tried to re-start and it wouldn't start. Sat a while, still wouldn't start. I sprayed some staring fluid in the breather and as long as I had a continuaous spray, when my wife turned on the ignition, she would run. Stop spraying the fluid and it cut off. Well, we went in for about 15 minutes, came out and tried to start it. Voila, it started (no strating fluid this time). It ran 'til I shut it off. After turning it off, once again, when I tried to re-start about a minute later, it wouldn't start. I'm thinking Fuel Realy Module. Any guesses? Can you point me to a thread where someone's already experienced this type of problem?
Thanks

My guess would be for the fuel pump relay. There are many threads about this issue. Try a search.

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I got too many cars!! Insurance eats me alive. Dave

78 Corvette Stingray - 3k
82 242 Turbo Volvo - Manual - 270k
86 300e 5 speed manual - 210k
87 420sel - 240k
89 560sl - 78k
91 420sel - 205k
91 560sel - 85k
94 GMC Suburban - 90k
97 Harley Davidson Heritage Softail - 25k
00 GMC Silverado 1 ton 30k

First suspect is clogged fuel filter..the wait time is the tip-off for that diagnosis.
FP test should be done.

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A Dalton

Thanks!
I fixed it.
I swapped the Fuel Pump Relay from my 420 into the 560 (same part number) and it now works perfectly. Guess I'll call Rusty and get a new Fuel Pump Relay.