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Old 08-20-2009   #57
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,686
Default Re: Rough Idle/Hesitation/Backfire

Quote:
Originally Posted by Gary Yarbrough View Post
I got my radiator and will be installing it by Saturday, so I'm back to trouble shooting the hesitation. While the car is drained of coolant, I took the opportunity to remove the plenum this morning. I'll be checking everything this afternoon/tomorrow.

My dad also convinced me to take a closer look at my MAP sensor. I noticed something that I need some opinions on. I'll try my best to describe this. Using a flashlight, I took a look inside the hole where the hose connects on the bottom of the sensor. While it was clean inside, I noticed that at the bottom of the hole, it appears to me that there is a small piece missing in the plastic. It looks as if I can see inside the sensor to some electronics. Since I don't know how the sensor is supposed to look, I suppose this could be normal, but the hole is irregularly shaped. Does it sound like I need a new MAP sensor?
If you are describing a vacuum connection that isn't sealed, then you need a new sensor. Trying to envision what you are describing.
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