1999 230SLK engine starts cutting out at 4200 RPM, what would cause this?

Asked by Oct 05, 2015 at 06:12 PM about the 1999 Mercedes-Benz SLK-Class

Question type: Maintenance & Repair

1999 230 SLK, the engine idles at 762 RPM  but when I rev the engine up, right
about the 4200 RPM mark the engine starts to cut out, what could be causing
this?

2 Answers

78,195

Loss of fuel pressure or supply, erratic signal from the crank sensor around those RPMs, vibration related electrical connection problem, loose grounds.

try changing the maf sensor or cleaning it

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