What is this??

cudadave72 · 03-02-2009, 02:08 PM

I have another thread going about issues I'm having since replacing the timing belt and having misfire issues. I have come across a sensor that was unpluged that is mounted on the right side frame rail (passenger side) that is just below and back of the oil filter. It is mounted to an "L" bracket and has a 3 wire connection to it. Any ideas what this sensor is?

kiaracer · 03-02-2009, 02:14 PM

you're probably talking about the chassis acceleration sensor and that will cause some issues if it's not plugged in. that sensor helps the ecu determine the difference between up and down motion of the vehicle (speed bumps, bumps in the road, etc) and a misfire.

cudadave72 · 03-02-2009, 02:22 PM

I just did some more research and indeed it is the chassis acceleration sensor. Could it be causing misfire issues? I know the simple answer is to hook it up but I still have the car torn apart and want to make sure I have everything right before putting it back together again.

cudadave72 · 03-02-2009, 06:14 PM

Thanks for the reply. It all worked out. Now back to work on my "other baby"

kiaracer · 03-02-2009, 06:52 PM

to answer your question, yes it would cause a false misfire. the purpose of that sensor is to help the ecu tell the difference between bumps in the road and an actual cylinder misfire. if that sensor is unhooked, the ecu wouldn't be able to tell if you hit a bump in the road so it could throw a false misfire code.