Calgary Jeep Association

Author Topic: Weird vibrations  (Read 2568 times)

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Offline jeepgrl

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Weird vibrations
« on: August 10, 2010, 12:50:55 PM »
This past week I have some weird vibration in my JK, but the really weird part is that it's only when I'm idling or at low speeds, and it's really intermittent.  Anything above 60 km/hr and it goes away.  I thought it might be good old Mclean mud, but I just spent $20 hosing it all down, belly and all... Any thoughts?
Current project:
2012 2-door Orange Crush JK
AEV 3.5" lift
33" Mikey Thompson MTZ
Smittybilt XRC front and rear bumpers
Warn VR800 winch

BUILT AND SOLD: Silver 2007 JKU (because they all look the same now anyway)

Offline Bnine

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Re: Weird vibrations
« Reply #1 on: August 11, 2010, 10:28:55 AM »
Trans mount, motor mount, rough idle, bad sensor, etc etc

Start with those.
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Offline jeepgrl

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Re: Weird vibrations
« Reply #2 on: August 11, 2010, 11:14:13 AM »
Thanks... the other thought is that I have some mud still stuck in the fan... I nailed it down last night to that it vibrates when the fan kicks in, and stops when the fan stops.  It would also explain why it stops at higher speeds, too, cuz the fan wouldn't be on.  If it isn't the fan, I'll look into the other stuff.
Current project:
2012 2-door Orange Crush JK
AEV 3.5" lift
33" Mikey Thompson MTZ
Smittybilt XRC front and rear bumpers
Warn VR800 winch

BUILT AND SOLD: Silver 2007 JKU (because they all look the same now anyway)

Offline RckyMtnTJ

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Re: Weird vibrations
« Reply #3 on: August 11, 2010, 04:42:13 PM »
What's the best way too diagnose a bad transmission mount?
98 TJ 4" lift + goodies

Offline WagoneerXJ

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Re: Weird vibrations
« Reply #4 on: August 11, 2010, 04:55:30 PM »
What's the best way too diagnose a bad transmission mount?

gra the tranny and see if it moves lol
98 XJ Sport 2 Dr, 3", 33's and Bushwacker Flat Flares
87 XJ Wagoneer 5", Dana 44, 34" Swamper TSL's
97 TJ 5.2 Magnum V8 swap, 4" and 33" MTZ's- GF's Jeep
84 Mustang GT-Built 351W 5spd
97 XJ - 3.5", 31" BFG. 370,000 KMS and counting!

Offline Gearhead

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Re: Weird vibrations
« Reply #5 on: August 11, 2010, 07:17:53 PM »
if you were in any deep mud / water ,   a fan blade may have snapped off  .    they shake real good if that happens.

Offline jeepgrl

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Re: Weird vibrations
« Reply #6 on: August 11, 2010, 09:09:06 PM »
Another trip to the car wash... lots more mud.  I gave the fan a good soaking and a big chunk of mud came off.  No more vibrations!!  (Cheap fix, thank god)
Current project:
2012 2-door Orange Crush JK
AEV 3.5" lift
33" Mikey Thompson MTZ
Smittybilt XRC front and rear bumpers
Warn VR800 winch

BUILT AND SOLD: Silver 2007 JKU (because they all look the same now anyway)

Offline w squared

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Re: Weird vibrations
« Reply #7 on: August 11, 2010, 10:16:41 PM »
I wouldn't say that mud is the root of all evils, but it's responsible for a lot of Jeep issues.

Time spent with a wash gun is time well spent.
I followed a rainbow out to a garage and found a leprichaun. The rainbow ended in a potted cactus on his porch, but there was no gold :(

Offline Bone206

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Re: Weird vibrations
« Reply #8 on: August 12, 2010, 05:59:48 AM »
Costco recently had a Karcher 3000 psi gas powered  hand washer (most carwashes you go to can get around 1800 psi) with multiple nozzles on for 298 last month or so. It has easily paid for itself already :). I use it tons for my jeep and a lot of other things. Something to consider, as long as you don't blast out the grease from all of your links here and there
07 JK Sahara Unlimited, 1.5 spidertrax spacers, 2.5 teraflex cl, 275/70/18 duratracs, ace rock rails, black OEM  rims, safari straps roof, Cobra 29 WXBT CB

Offline specialk

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Re: Weird vibrations
« Reply #9 on: August 12, 2010, 08:07:04 AM »
Another trip to the car wash... lots more mud.  I gave the fan a good soaking and a big chunk of mud came off.  No more vibrations!!  (Cheap fix, thank god)

I told you the mud is bad  ;)  You got to stop playing in those puddles!  Dirty jeepgrl  :P :o ::)
04 TJ Rubi

Offline jeepgrl

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Re: Weird vibrations
« Reply #10 on: August 12, 2010, 10:20:38 AM »
I love playing in the mud and getting dirty though... but not like the creepy redneck mudbather we saw (pics?).  That was just gross. (shudder...)
Current project:
2012 2-door Orange Crush JK
AEV 3.5" lift
33" Mikey Thompson MTZ
Smittybilt XRC front and rear bumpers
Warn VR800 winch

BUILT AND SOLD: Silver 2007 JKU (because they all look the same now anyway)

Offline JackstandJohnny

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Re: Weird vibrations
« Reply #11 on: August 12, 2010, 10:23:09 AM »
I wouldn't say that mud is the root of all evils, but it's responsible for a lot of Jeep issues.

Time spent with a wash gun is time well spent.



just park you jeep on the front lawn and run the sprinkler underneith it for a few hours.  go have a beer or two on the patio, come back, move jeep ;) 
this COULD work on the driveway, although results may vary
~ rescue green JKUR on 35s.  typical rubicon build

Offline jeepgrl

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Re: Weird vibrations
« Reply #12 on: August 12, 2010, 10:24:53 AM »


just park you jeep on the front lawn and run the sprinkler underneith it for a few hours.  go have a beer or two on the patio, come back, move jeep ;) 
this COULD work on the driveway, although results may vary

Hey, maybe I can park it in Rubiclone's cul-de-sac and run the sprinkler underneath it... her neighbor LOVES us Jeepers...   8)
Current project:
2012 2-door Orange Crush JK
AEV 3.5" lift
33" Mikey Thompson MTZ
Smittybilt XRC front and rear bumpers
Warn VR800 winch

BUILT AND SOLD: Silver 2007 JKU (because they all look the same now anyway)