5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

auto trans ?

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Old 08-15-2009, 08:30 PM
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1988TTOP
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Default auto trans ?

my buddies 89 5.0 the trans slips really bad when cold u have to rev to 2300 rpm bfore it will start to move and then will slip when u get on it any ideas
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Old 08-15-2009, 10:07 PM
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mjr46
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check the fluid level
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Old 08-15-2009, 10:08 PM
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fluid is full it is brown and smells like *** but full
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Old 08-15-2009, 10:10 PM
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has the filter been changed recently??
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Old 08-15-2009, 10:12 PM
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i couldn't tell u if has or not i would say no but i dont know didnt want to wast the money to change if if the trans is junk
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Old 08-15-2009, 10:23 PM
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mjr46
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it's possible the tranny is bad ......add a half pint of brake fluid to it and drive it and see if it temporarly cures the slip
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Old 08-15-2009, 10:25 PM
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The automatic trans fluid should be a pink color and not brown. A slipping trans is not a good thing, obviously. Luckily, AOD's are a dime a dozen and cheap too.
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Old 08-15-2009, 10:25 PM
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ok so should i waste the time and money and change the fluid or no
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Old 08-15-2009, 10:30 PM
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Change the fluid and filter. If that does not cure the problem, reuse it. But it seems the transmission is starting to slip bad. When mine started slipping I wasted no time and threw it out.
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Old 08-15-2009, 10:38 PM
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she slips bad i would have to say that the fuild has never been changed she has 140000 miles on her
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