Need Help!!! Runaway Cavalier - Maintenance and Repair Forum

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Need Help!!! Runaway Cavalier
Sunday, August 28, 2016 5:06 PM
Hi everyone! I've lurked around for a couple of months, but I finally figured I should post this one. My son has an 04 Cavalier 5 speed that we had to swap the motor due to a timing chain going south. We got a motor out of an 03 Malibu. It came with the exhaust manifold, intake manifold and throttle body. We kept everything on the motor and dropped it in. Only issue we had was having to change the crank position sensor plug b/c it didn't fit, but it was the same shape, but just a little too big. Long story short, we got a new plug wired in and now it runs away when you start it. It acts as if the throttle is wide open even though the throttle is closed. I tried to unplug the idle air control and throttle position sensors (one at a time and both at the same time). Nothing changes. I'm at my wits end and need some help to get his car back on the road since this is what he uses to get back and forth to work. Thanks in advance for all your help!

Re: Need Help!!! Runaway Cavalier
Sunday, August 28, 2016 5:08 PM
Sorry! Double post...
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