why does my jeep shake mostly while idling?

Asked by Mar 06, 2012 at 06:03 PM about the 1999 Jeep Grand Cherokee Laredo 4WD

Question type: General

Ok i just did a block swap and got.the.truck running .
new.head gasket set. but now jeeps motor is jumpy so
tightened the mounts.i noticed most of the noise was
coming from the exhaust. Engine light indicated
ignition coil so i replaced that and it settled it about
10%. Now in park its jumpy and drive its louder only
till i hit about 20mph. so when I'm braking to stop it
idles so low and its so quiet it cuts off occasionally.
every other time it just jumpy.

1 Answer

55

my 04 jeep does the same thing. i believe its just the chassis of the jeep vs the weight of the motor. ends up shaking a little while idleing.

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