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Old 10-25-2010, 04:58 PM   #1
kkspeed
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Vibration in my 2003 ZTW

Like other members, I'm experiencing weird vibrations in my 2003 ZTW / Auto with 66K.

1. Vibration after cold start-up.

2. Vibration when turning left after cold start-up

3. Part-Throttle vibration when warm

4. No CEL's

I changed the following:
1. Passenger's side motor mount (OEM Ford Part).
2. DFTP Sensor
3. Plugs (Motorcraft Copper w/.050 Gap)
4. Factory plug wires
5. Coil Pack
6. Both O2 Sensors (Bosch)

I'm frustrated. I like my ZTW and it runs fine when operating normally, but this vibration is driving me crazy.


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Old 10-25-2010, 06:47 PM   #2
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Did you check the other 2 mounts ?. Also make sure that the engine is aligned
Properly. Try moving the pass side mount fwd or backwards. To alleviate the vibrating.
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Old 10-26-2010, 06:38 PM   #3
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Did you check the other 2 mounts ?. Also make sure that the engine is aligned
Properly. Try moving the pass side mount fwd or backwards. To alleviate the vibrating.
How do I check that the engine is aligned correctly?
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Old 10-26-2010, 09:09 PM   #4
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How do I check that the engine is aligned correctly?


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Well I don't think there is any measurement or any thing. I would try just sliding it fwd or back to see if it changes any thing.
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Old 10-27-2010, 08:50 PM   #5
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Well I don't think there is any measurement or any thing. I would try just sliding it fwd or back to see if it changes any thing.
It appears that you are correct.

I moved the metal bracket that the RH Hydralic Mount is bolted to back to the factory location (covered the paint wear marks in the frame) and the vibration is a lot better.

I guess the engine moved after I unbolted the RH Mount with a jack under the oil pan and I didn't move the bracket back to the factory location after I installed the new motor mount.

I'm still going to replace the dog-bone and transmission mounts for piece of mind.

Thank you to all the members for your help!
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Old 10-28-2010, 08:09 PM   #6
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Originally Posted by kkspeed View Post
It appears that you are correct.

I moved the metal bracket that the RH Hydralic Mount is bolted to back to the factory location (covered the paint wear marks in the frame) and the vibration is a lot better.

I guess the engine moved after I unbolted the RH Mount with a jack under the oil pan and I didn't move the bracket back to the factory location after I installed the new motor mount.

I'm still going to replace the dog-bone and transmission mounts for piece of mind.

Thank you to all the members for your help!
Good news. Thanks for the update. Thats how we learn if our ideas work.
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Old 10-25-2010, 08:34 PM   #7
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I fixed my similar symptoms with just the RH mount, but research did show the dog-bone (bottom or rear mount) to also be an issue. Also had found a few reports of issues with new RH mounts. Pull off cover of mount and feel the top of the rubber bellow. I believe that it should still be firm.
I coupled my RH mount with a timing belt change, and plan on the dog-bone next month with changing the struts. I have the steering wheel shimmy and can bounce the front left fender.
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Old 10-26-2010, 02:05 AM   #8
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^^^ Yes, I have had problems with the inner fender liners rubbing as well...
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Old 10-26-2010, 07:24 AM   #9
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Bosch!! NO. But should be ok anyway.

DPFE- it usually causes a miss in the engine, as well as at least a misfire code. This is what makes the determination to open the EGR valve.

As far as plug wires go, I recommend the closest national chain store with lifetime warranty plug wires. That way you can change them any time you want- or have any related problem- without costing any more money. We don't really benefit a lot from expensive plug wires- not like a Porsche 911, where you should buy the $900 plug wires.

I digress.
We generally recommend to replace all motor mounts at the same time for this reason after it's been determined that motor mounts are the cause. You've been throwing money at your engine like it has a running problem- does it?
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Old 10-26-2010, 08:32 AM   #10
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how should that bubble on the engine mount feel? firm, or squshy? I have heard both now. Mine is swishy, but is not empty as the dome does not collapse when poked with a finger.
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