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Old 04-13-2014, 05:11 PM   #1
xFocusingx
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vibration at idle?

2005 Focus ZX4
110,000

Ok, so I do not drive this car often (its my gfs) but I did an oil change on it, and driving it the last two days, I have felt what I think is abnormal vibration at lights. The car has always vibrates, and the motor chatters quite a bit (she went 15k with one conventional oil change before knowing me). I did the oil change a year ago, was black. Did another one 2k later, and another 2k later, so I have done it every 3k now and has been fine.

Only other issue I knew of was trans fluid was not changed. I changed it about 4k ago (gasket is leaking on one end) so I am redoing that. It is a extremely small leak, I have checked fluid and is still fine.

So the vibration, when you are at a light completely stopped, it vibrates more rough within 2-3 seconds, as soon as you accelerate it goes away.

So I had it in neutral, parking brake on and popped hood. It may sound like there is a vac leak around the exhaust manifold, but hard to tell. She also says she felt like it was not shifting as well into 3rd, to me you dont even really feel it shift, and accelerates fine. Any ideas? Common vac leak maybe? Gonna hook scanner up to it, feel like idle is low (has no tact)

No dash lights on

Motor craft plugs 7k ago
New belt tensioner/belt 3k ago


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Old 04-13-2014, 07:46 PM   #2
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I'll throw out the std. answer of possibly a motor mount issue for the vibration.

If it otherwise seems fine (running without issues) but vibration starts to get annoying, especially when cold or at idle, passenger side mount is the first suspect.

It hasn't been as big an issue with the duratec engined cars with a different design mount, but it's starting to show up more now as they age. (My '04 started showing the problem when cold this year, not bad enough to jump in & replace it yet)

Keep it in mind as a possibility if the reg. maint. you're doing doesn't smooth it out enough to get rid of the concern.

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Old 04-13-2014, 10:17 PM   #3
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I replaced the passenger side mount when i did the belt tensioner

Ill check to make sure its still good
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Old 04-13-2014, 11:13 PM   #4
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Hello xFocusingx,

Passenger motor mount replacement must be done using an OEM / Ford mount. Do not use aftermarket mounts unless you are a poly mount type person.

Any 2003, 04, 05 and maybe other newer Duratec engines that have the original PCV hose is either bad now or will be bad soon.

Please see this thread for info about the Duratec PCV hose replacement->
http://www.focusfanatics.com/forum/showthread.php?t=212938
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Old 04-14-2014, 12:37 AM   #5
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I will be glad to look over datalogs and see if I can help give you ideas of what looks wrong

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Old 04-14-2014, 09:57 AM   #6
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I used an aftermarket Anchor Mount. I need to go to Ford anyway to buy the vent selector cable.

I can post the data that is there, I'll inspect the mount. One of the first things I though was the PCV valve, since it has never been replaced, but I could not see it.
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Old 04-14-2014, 10:18 AM   #7
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Quote:
Originally Posted by xFocusingx View Post
I used an aftermarket Anchor Mount. I need to go to Ford anyway to buy the vent selector cable.

I can post the data that is there, I'll inspect the mount. One of the first things I though was the PCV valve, since it has never been replaced, but I could not see it.
The Anchor mounts are well-known for failing. Slap an OEM passenger mount in there and you should be good to go.
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Old 04-14-2014, 02:26 PM   #8
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One thing I noticed, it was idling between 715-750 mostly (in park) when I shifted to drive and reverse it dropped to 630-650

ENG SPEEd (RPM)__703
BARO PRS (HG)____29.5
CALC LOAD (%)___38.8
MAF (LB/M)_______0.32
MAP (HG)_________8.6
OUT TEMP________68
COOLANT (F)______190
IAT (F)___________84
IGN ADV__________5.5
SECOND AIR_______ATMOS
ST FTRM1 (%)_____fluctuated between 0.8 and 3.1
LT FTRM1 (%)_____-5.5
VEH SPEED________0
ABS LOAD(%)______17.6
REL FPR (PSI)___39.31
FUEL SYS 1_____CLSD
FUEL SYS 2_____N/A
CAT TEMP (F)___885 (at one point was over 900)
EGR CMD (%)____0.8
EVAP Purge(%)__24.7
EVAP VP(H20)___-0.758
CMD EQ RAT____0.999
O2S11 (v)______3.50
ST FTRM11(%) -2.3
O2S12(v)________0.215
O2S13(v)________0.715
CLR DIST (mi)____519
CLR TRPS________78
FUEL LEVEL____72%
PWR (v)______14.1
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Old 04-14-2014, 02:36 PM   #9
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I also feel like the mpg are down. When i filled it up i rest trip meter. Drove 40 miles and is already just below 3/4 tank
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Old 04-15-2014, 12:21 PM   #10
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ideas?
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