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04 Ford Focus jerks when driving but only after opening trunk

83 Views 1 Reply 2 Participants Last post by  amc49
My car jerks and makes my door ajar light come on when I brake but it only happens after I open my trunk, it’s extremely weird and I don’t know what would make my car drive so shitty literally only when I open my trunk and it last for about a week and then goes away, I work in construction so I kinda need to use my trunk to store equipment but I’m terrified to open it because I know afterwards my car will jerk and throw lights on my dashboard. Has anyone ever had this problem?
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· Registered
19,376 Posts
You may well have broken wiring harness where it flexes going into the trunk. Common on these.

You might try running the trunk lid bumpers into the lid a bit to make them not stick out so far. Sticking out far enough can make the door ajar light come on.
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