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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

Need HELP. My W140 S280 has a fuel injector problem.

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Old Aug 5, 2018 | 04:34 AM
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W140 S280
Need HELP. My W140 S280 has a fuel injector problem.
The fuel pump is in a good condition. The fuel injector wire connector has no signal. Got spark.
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Old Aug 5, 2018 | 06:15 AM
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s320
year engine would be helpful
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Old Aug 6, 2018 | 12:24 AM
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W140 S280
Originally Posted by oldsinner111
year engine would be helpful
It's year 1997. 104 for the engine model.
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Old Aug 6, 2018 | 04:45 AM
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s320
confirm that fuel pump is working,there's a fuse,and relay in the trunk next to fuse box.with a sethoscope you should hear fuel injjjectors clicking,if fuel pump is bad.If not its a bad sensor somewhere.
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Old Aug 6, 2018 | 06:00 AM
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W140 S280
Originally Posted by oldsinner111
confirm that fuel pump is working,there's a fuse,and relay in the trunk next to fuse box.with a sethoscope you should hear fuel injjjectors clicking,if fuel pump is bad.If not its a bad sensor somewhere.
The fuel injector's not clicking. So does that mean there's a bad sensor somewhere?
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Old Aug 6, 2018 | 06:37 AM
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yes,Open coffin box where computers are,make sure no ATF wicked into there,if so clean it up.alsosome have fuses to protect them.Check cranksensor in case its loose.I ran over sticks and it unplugged.Check coolant sensor for broken wires,or unplug,and jump connector with paperclip.
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Old Aug 6, 2018 | 07:31 AM
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ok its probably fuel pump or fuse or relay.I think you can open relay,and force contacts to close to test
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Old Aug 6, 2018 | 10:16 AM
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W140 S280
Ok, thanks bro! Will try it and update here.
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