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Old 08-02-2010, 09:47 AM   #1
larrdjones2
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Vibration when in reverse

2002 Ford Focus Wagon - Automatic

When I first start vehicle and put in reverse the car makes a vibration. After I drive the car for a bit, maybe 20 minutes and put into reverse again - the vibration will not be there. At this point it only seems to be there when the vehicle is cold or until it warms up.

It has a new transmission with about 30K miles on it. Car has 130K miles.

Any ideas?


 
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Old 08-02-2010, 10:00 AM   #2
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First guess - not running as smooth B4 warmed up, might be an early sign of needing T-up type maint. soon if not recently done...
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Old 08-02-2010, 11:04 AM   #3
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Is your idle speed higher when the car is cold? It should go up to somewhere from 1500-2k rpm depending on how cold it is.
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Old 08-02-2010, 03:25 PM   #4
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my car is the same way but only does that when warmed up. i looked it up and it is a back pressure problem
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Old 08-02-2010, 03:32 PM   #5
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Any idea what part(s) would cause this issue?

Thanks again.
 
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Old 08-29-2010, 11:48 PM   #6
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Quote:
Originally Posted by larrdjones2 View Post
2002 Ford Focus Wagon - Automatic

When I first start vehicle and put in reverse the car makes a vibration. After I drive the car for a bit, maybe 20 minutes and put into reverse again - the vibration will not be there. At this point it only seems to be there when the vehicle is cold or until it warms up.

It has a new transmission with about 30K miles on it. Car has 130K miles.

Any ideas?
Our '02 Wagon is doing this exact same thing. The only difference is that ours has 140k on it & I think it's the original tranny. We just bought the car 4 days ago & it has no documentation or repair history with it. I did notice that the previous owner (she bought it in January of this year) had it over-filled by more than 1/2 qt. I just finished pulling out the extra fluid.

What's a "T-up type maint"??

My guess is that the problem is related to one of the many solenoid valves inside the tranny pan. The first thing I'm going to do is an Auto-Rx clean of the tranny. I've already got the filter kit, so when this clean cycle is done I'll drain everything & refill it with Mobil 1 syn ATF. While I have the pan off I'll inspect all of the solenoids.

WNTWN: Yes, my car idles faster during it's first cold start-up. Should it?
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Old 03-22-2011, 09:22 PM   #7
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I'd suspect the engine mount first. These seem to have a history of dying. Easy to fix yourself. I just did mine. By the way, my 2002 SE wagon had the same symptoms you describe.
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Old 03-23-2011, 09:18 AM   #8
Alex2507
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I'd suspect the engine mount first.
Yep.

The passenger side mount to be specific and to be even more specific a replacement from the dealer to the tune of about a 100 bucks works best.

T-up stands for tune up.
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Last edited by Alex2507; 03-24-2011 at 07:59 PM.
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