I was driving on the highway and the vehicle pulled away as in driving itself. My only control was the brakes. It was scary thank god no one got hurt. Its not the first time. I've brought this to the attention of the dealer and they told me nothing is wrong. This has happened to me 4 diff times. When I put the car on park the RPM revs up to 5000 RPM I have to immediately shut the car off. This is a safety concern and needs to be looked into immediately.
2009 Jeep Grand Cherokee acceleration complaints
Page 2 of 2: complaints 11 to 12 of 12, newest first, as owners wrote them.
Vehicle suffers loss of acceleration. This can occur when merging into traffic, attempting to pass. Routinely happens after traveling on interstate at consistent speed but has happened when attempting to merge onto or off interstate. There have also been occasions when vehicle appeared to backfire discharging plume of white smoke. Diagnostics at the dealership did not show any problems but when a computer was hooked up to the vehicle, it captured unexplainable readings that astounded the mechanics. Dealership has changed two map sensors and this has not corrected the problem.
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