78 320 SEL dies... wont always start right back up - Mercedes-Benz Forum

 
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post #1 of 7 (permalink) Old 03-19-2009, 12:55 PM Thread Starter
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78 320 SEL dies... wont always start right back up

I have a 1978 320 SEL. It generally starts fine and runs fine. However, occasionally ( anywhere from once a week to 5 times a day ) it will stall out, and then wont start back up for anywhere from 3 seconds to 5 minutes. When it dies, if the car is rolling fast enough to keep the engine turning, the oil pressure, and rpm gagues still register. When it is dead, and wont start, the fuel pump fails to do its initial pressure generation when the key gets turned to run. Not sure if the fuel pump is the issue (dont think so) or if some sensor of something is telling the fuel pump relay to stop. I have removed and opend the fuel pump relay itself, and it appears to be in prefect condition as far as the solder and anything else inside it. I love my car, but randomly dying is definatly not one of the things I love about it. If anyone has had this problem and fixed it, or has a good idea of what I could do... I would really appreciate your input.
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post #2 of 7 (permalink) Old 03-19-2009, 09:35 PM
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OK, I'll bite. What is a 1978 320 SEL?

Near Manassas Va. '65 220S, 2006 Ford Crown Victoria Police Interceptor, '99 Volvo V70, '72 350SL 4 speed

Not part of the in-crowd since 1952. It's BRAKES not breaks. You break a bone, use brakes to stop your car. /rant

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post #3 of 7 (permalink) Old 03-20-2009, 09:17 AM
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x2 we'll need to clarify which car this is before we start making suggestions. A 320SEL in 78 is baffling.

1977 - W116 - 6.9
1974 - W115 - 240D /8 - 4(M) OM617.910 + Turbo + 300D FW - Completed 7/8/10
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post #4 of 7 (permalink) Old 03-20-2009, 03:02 PM Thread Starter
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Sorry guys, its a 1988 mercedez-benz 320 sel, not a 1978, and i am in the wrong forum, my appologies.
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post #5 of 7 (permalink) Old 03-20-2009, 03:39 PM
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Still the wrong car, a VIN may help...

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post #6 of 7 (permalink) Old 03-20-2009, 05:11 PM Thread Starter
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My appologies for the mis-information, it is a 1988 300 sel.
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post #7 of 7 (permalink) Old 03-20-2009, 10:51 PM
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You may have hit pay dirt this time.

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