Vibrations in the engine
#1
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Location: Louisville
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Year: 2000
Model: Cherokee
Engine: 4.0L
Vibrations in the engine
So I have a big vibration in my engine when the 2nd fan turns on it with vibe for awhile then stop, it also does this when the A/C is on, any ideas what this could be? Thanks
#2
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Location: Michigan (Home state) Stationed in Montana
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Year: 1993
Model: Grand Cherokee
Engine: 5.2L MPI V8 (318)
When the A/C turns on, the ECU Turns on the 2nd auxiliary cooling fan. (The smaller electric one.) Leave the engine running, put the A/C on, open your hood, and watch it. Could be that smaller E-fan hitting it's own shroud, or contacting something else. Just a quick visual inspection would be my first move.
#3
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Year: 1996
Model: Cherokee
Engine: 4.0
you probably have an unbalanced electric fan, if you go through mud and it doesn't spin the mud off of it right away it will create a severe vibration once the mud is dried on.
also check to make sure it's still complete
also check to make sure it's still complete
#4
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Year: 1999
Model: Cherokee
Engine: 4.0L
With the vehicle off, try turning the electric fan. If the fan motor bearings are shot, you should be able to feel it as you turn the fan.
#5
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Year: 2000 WJ
Model: Grand Cherokee
Engine: 4.7
Has anybody figured this out? I have the same vibration when:
1. E-fan turns on with temp increase.
2. E-fan turns on when I set heat selector to "defrost"
3. When e-fan turns on when I put on the A/C.
It is connected to the e-fan and coincident with the above conditions.. I unplugged the A/C compressor , but still get the vibration when I turn on the A/C. My stock fan started do this just before it fell apart and ruined my radiator. I installed a new e-fan and I still have the vibration under the above conditions. It's not mud and should not be bearings, unless the bearings in a brand new e-fan are shot. Not likely.
1. E-fan turns on with temp increase.
2. E-fan turns on when I set heat selector to "defrost"
3. When e-fan turns on when I put on the A/C.
It is connected to the e-fan and coincident with the above conditions.. I unplugged the A/C compressor , but still get the vibration when I turn on the A/C. My stock fan started do this just before it fell apart and ruined my radiator. I installed a new e-fan and I still have the vibration under the above conditions. It's not mud and should not be bearings, unless the bearings in a brand new e-fan are shot. Not likely.
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