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S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

1998 s420

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Old 11-27-2019 | 11:23 PM
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Al s420's Avatar
Al s420
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1998 s420 mercedes
1998 s420
Cant find whats going on... It says mass air sensor and cylinder 1 an 4... So I changed the coil packs and installed a new mass air sensor but it still has check engine light on and runs with no power.. Help
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biker349 (12-15-2019)
Old 12-12-2019 | 09:50 PM
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rcrc7
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From: Richmond, BC, CA
1990 560 SEL , 1998 S 420
Usually, it needs those codes in ECU (ME) memory to be cleared after all the works you put in! ...maybe you did! How is your car running now? Do come back and post the outcome! We all love to hear how you got it resolved. Please share.
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