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dugqbit
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• Kalona, IA, USA |
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• Registered on 3/20/2012 |
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• 2 posts |
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 Posted:3/20/2012 18:06 |
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I recently took my 04 Marquis on a 650 mile trip. The second half of the trip I heard a clunk sound while the tranny was downshifting from 4 to 3. The car has 161,000 on it and I'm not sure if it has ever had a tranny flush. Will the flush fix this problem or will I be investing in a new transmission? Any feedback would be appreciated. |
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Posted:3/20/2012 18:14 |
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It well could have been road debris that happened exactly at that moment. But it wouldn't hurt to change the filter and fluid, which should be done according to your maintenance schedule. If it happens again on a different road, then I would worry about a problem.
*******************
PROUD MEMBER of www.crownvic.net
It's just a SUPER-DUTY Mustang GT Sedan. 198K miles and still rolling HARD.
1997 Crown Victoria P71 SVT *** ex-US Marshall service (the CAR)
STOCK?? I bet it was modified. 
13.26 @ 107.24 MPH 1/4 mi w/ me, tools, & full tank of 93 octane
I added CAI, NICHE 19 X 8.5 " wheels with 245/45ZR 19 rubbers, and completely rebuilt the front end with poly bushings, Kooks headers, 2 1/4inch exhaust, TCI 2200-2400 rpm Stall converter
.PLANS:: engine upgrade, 5.4L 2v stroker, rebuild interior in leather w/ buckets, thinking about turbos
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dugqbit
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• Kalona, IA, USA |
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• Registered on 3/20/2012 |
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• 2 posts |
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Posted:3/20/2012 18:17 |
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i'm sorry I wasn't clear. It clunked every time it switched from 4 to 3. Approximately 7 hours into a 12 hour trip. |
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wizzard1222
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• Ballwin, MO, USA |
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• Registered on 1/27/2011 |
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• 139 posts |
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Posted:3/20/2012 19:29 |
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I had a 1989 Olds 'Sword' auto tranny that had over 230 thousands on it.
On a road trip...it started to occasionally skip-pause for about 2 seconds causing
a 'thump'. It would continue for the balance of the trip (>300 miles). My wife & I would
try to time and distance each time it would occur.... 
Upon arrival @the destination....borrowed the son-n-law's vehicle ramps and did the
Flush-N-Fill w/some Reslone Tranny 'slick-stick' stuff.
The return trip was event-less...! 
However...about another 15 thousand miles later...the same old 'thump' came back
for a while...2 to 3 months... 
After checking the Fluids...which were in fine level and color...Never felt the 'thump' again
before retiring the 'Sword' with more than 255 thousands miles...
Summary: Try the Flush-N-Fill...it's not much of an expense...fairly short time period to perform 
As a backup...take it to a Tranny shop...get their thot's....!!! |
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