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Unread 10-27-2013, 04:10 PM   #1
mvaafc1
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New to jeep. shaking terribly and knocking sound

Hi everyone I bought a 2000 sahara in March. I recently ran into an issue where my car is shaking terribly and making almost like a knocking sound as well as the check engine light came on. I can't figure out what it is. Got a tune up and oil change. Any ideas?

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Unread 10-27-2013, 04:55 PM   #2
Turcsi_Wheeler
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I might be very wrong, but do the motor mounts looks good?
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Unread 10-27-2013, 05:14 PM   #3
Tom95YJ
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Wrong section moving to proper area
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Unread 10-27-2013, 05:26 PM   #4
tyvanwie
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Do you know if the two are related? Do you feel the shaking in the steering wheel?
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Unread 10-28-2013, 07:51 AM   #5
mvaafc1
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Quote:
Originally Posted by Turcsi_Wheeler
I might be very wrong, but do the motor mounts looks good?
Yes they do
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Unread 10-28-2013, 07:54 AM   #6
mvaafc1
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Quote:
Originally Posted by tyvanwie
Do you know if the two are related? Do you feel the shaking in the steering wheel?
No not in the steering wheel, the entire car shakes but it doesn't do it all the time
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Unread 10-28-2013, 08:03 AM   #7
XTRyan
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Welcoming to being a Jeeper!!

I've read that if the injectors are dirty they can load up and dump a bunch of fuel at once which would cause a rough idle/jump in RPM's that can cause a shake. The lean/rich condition this would cause could also be the reason for your check engine light. Did you have the code read? Most auto parts stores will do this for you for free these days. You could try a bottle of injector cleaner in the gas tank and see if that helps. Good Luck!

-Ryan
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Unread 10-28-2013, 08:07 AM   #8
mvaafc1
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Thanks ryan, and yes the code read p0303
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Unread 10-28-2013, 01:49 PM   #9
tomsrancho
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Check this thread for p0303:
http://www.jeepforum.com/forum/f9/lo...p0303-1229725/
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Unread 10-28-2013, 07:20 PM   #10
JStMarie
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I've experienced an extreme version of what you are describing when I had a blown head gasket. Coolant was getting into the cylinder, causing a terrible misfire, which in turn caused shaking of the entire vehicle.

Pull the plug that is misfiring and shine a very bright light down into the plug hole. If you see green, ouch.

Good luck.
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Unread 11-11-2013, 11:58 AM   #11
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mvaafc1, how did this turn out?
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