S-Class (W126) 1979-1991: 300 SE, 300 SEL, 380 SE, 380 SEL, 420 SEL, 500 SEL, 560 SEL, 360 SEC, 500 SEC, 580 SEC, 300 SD TURBODIESEL, 300 SDL TURBO, 350 SD TURBO, 350 SDL TURBO

engine cranks but no start

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Old Jul 20, 2018 | 06:13 PM
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bashka99's Avatar
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w126 300 sel
engine cranks but no start

a w126 300 sel, it started idling very low.
then engine started stalling at stop lights or going round a rounda bout.. one day it stalled completely had to tow.checked fuel spraying well.spark plug ignites good.just dont know what else.please help
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Old Jul 28, 2018 | 07:36 AM
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500SEL, 190D, C280
Ignition control module?
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Old Oct 6, 2018 | 08:55 PM
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Mr. A Kaufman's Avatar
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From: Melbourne, Australia
1984 280SE W126, 1982 280E W123
I had his same issue ith my (Australian Delivery) 1984 280SE (126) so first diagnosed using common sense....i.e. checked leads, plugs, distributor, rotor, cap, coil, fuel pump ec bu hen I came up without an answer, I realized i had to be the fuel pump relay.
The pump worked fine when "jumped" directly from a battery but was only getting limited or no power when connected to the rest of the system.
They're not a super expensive part... about USD$75 I'd say. I'm not sure about Gen 2 but the Gen 1 part number is 0001 545 4305
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