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Intercooler Pump & Misfire

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Old May 15, 2014 | 12:34 PM
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drewk88
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Joined: May 2012
Posts: 49
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From: Shanghai, China
2004 S600 Twin Turbo V12
Intercooler Pump & Misfire
Hello All,

I've had a random misfire problem on cylinders 7, 8 & 9 for quite some time now.
After reset, the CEL will come on when the engine is up to temperature and you give it more than about 1/2 throttle.

I've replaced:
Spark plugs & red silicone boots
Ignition Coil Pack
Fuel pump & filter

I've Checked:
For vacuum leaks
Ignition Module
O2 Sensors
Fuel pressure

Recently I found the intercooler pump is getting 12 volts, but not running.
Does anyone know if a failed intercooler pump causes misfires?

Thanks,

Drew
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