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

'91 420SEL died on the highway after running fine.

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Old Jul 30, 2014 | 06:52 PM
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420SEL "The Hulk"
'91 420SEL died on the highway after running fine.

Hello everyone,

I have a '91 420 SEL that died on me on the highway and now refuses to start. I try to start it and it cranks and cranks and cranks but doesn't actually turn over.

Before hand here and there it wouldn't start immediately and would struggle a little. But it would happen at most once a week.

Yesterday as I was accelerating to merge onto the freeway it started hesitating all of a sudden, buckling wildly. I tried going WOT and nothing happened. No response. The next exit was near so I tried pulling off the highway as soon as I went for the exit the car lost all power and then refused to turn over.

I need help trying to figure out what caused this. Any help would be greatly appreciated!
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