1997 Dodge Caravan Engine rough idle and hesitation

1997 DODGE CARAVAN
123,000 MILES • 6 CYL • 2WD • AUTOMATIC
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JJHOOCH
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I have a 3.3L and am getting a p0300 OBDII code. I have replaced the plugs, wires and coil to no avail. My gut is telling me that the EGR valve is the culprit due to the fact that the engine is only running rough and hesitating when it is cold. Once the engine has warmed up it smooths itself out and runs normally. So I'm thinking that I've got an EGR valve stuck open. I just don't want to throw another ~$70 in it without getting a second opinion on it. Do you guys think that the EGR valve is the next logical reason for the problem?
Aug 15, 2010 at 7:38 AM
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JACOBANDNICKOLAS
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It could be the EGR. Rather than getting a new one, remove the old one and check if it is carboned up inside. Also, check the intake where it mounts and the vacuum line to it. Clean it up and apply vacuum to it to see if the valve is moving and seating properly.

Let me know what you find.

Joe
Aug 15, 2010 at 2:37 PM
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JJHOOCH
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Took it into a certified mechanic...we'll see what they come up with. I felt like I was throwing parts at it but I'm going to be sooooo ticked if they tell me it was the EGR. I'll let you know.
Aug 15, 2010 at 5:12 PM
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JACOBANDNICKOLAS
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Yes, please let me know. What will really make you mad is if it is a vacuum leak. (LOL)

Joe
Aug 16, 2010 at 3:47 PM
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JJHOOCH
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It ended up just being a bad plug and wire (not the same cylinder)...go figure.
Aug 23, 2010 at 3:08 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
That was an easy fix. Glad you got it fixed. Let us know if you have questions in the future.

Joe
Aug 23, 2010 at 4:58 PM
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