Quote Originally Posted by Biggsy73 View Post
Hey mate. I get the same problem when I hit a big pothole or something. The only way I've fixed it is to pull on the accelerator cable at the top of the pedal and instanly drops back to normal. No mechanic has been able to stop it. I just put up with it.

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It's the wife's car so no idea if she hit a pothole , I did try revving it but with all the electrics wasn't game to do too much so lucky I found the idle fix which is still working for now .