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transmission automatic

  1. C4 Shifting Issues

    Classic Tech
    69 302 C4 Automatic Recently fixed a Gear Selector Shaft seal leak and put it back together and I am having issues with not being able to shift in any gear after neutral. I have the tranny oil pan off and the Down Shift Lever is interfacing with the Control Valve Body’s Manual Valve. If I...
  2. C-4 3 gear seizing up issues

    Classic Tech
    Help I have a 91 lx stroked 351 1970 a-code high nickel content the motor is about 450 to the wheels guessing from the engine builder. I have a c-4 transmission that had 10 street miles on it, have not been on the track yet. It started slipping on me then I lost 1st and 2nd gear, only 3rd and...
  3. Slow turnover after tranny rebuild

    V6 Tech
    1996 with a 1998 engine/tranny. Shift 1/2 accumulator lower spring broke. I pulled the tranny, replaced all seals and clutch packs, new Shift 1/2 accumulator spring/piston, new reverse servo. Put the tranny back on the block, making sure the torque converter was properly seated (end of shaft...
  4. 2013 Mustang GT shake/hop when slightly letting go of breaks

    2011 - 2014 Mustang GT Tech
    How's it going Mustang Family! Finally found out how to post my first tech thread lol So what's going on with my GT is that when I'm at a complete stop and I ease off the breaks just a little bit, my car moves forward but starts to jerk or bounce while moving. I don't know if this may be a...
  5. My First Mustang

    Introductions
    Hey everyone, I just wanted to introduce myself really quick. I just joined up today and have only recently aquired my first Mustang, a 2000 v6 automatic. I traded a bone stock 91 Honda Civic HB for it last Sunday. I was surprised they were interested in an even trade and after checking out the...
  6. 2008 V6 Mustang No Drive or Reverse

    2005-2010 V6 Mustang Tech
    I have a 2008 V6 Mustang and as I was leaving work yesterday I put it in drive and it sounded like it shifted but when I gave it gas it acted like it was in neutral. It also does the same thing when you put it in reverse. I can shift threw 1st, 2nd, and 3rd and once i hit 2.5 RPM in 3rd I can...
  7. 06 GT won't shift from P to D

    2005-2010 Mustang GT Tech
    Hi guys, I'm the owner of a 06 Mustang GT with automatic transmission. The car was involved into an accident before I bought it, so a few things had to be repaired (bumpers, brakes, ABS...) which worked out fine. However, I still have the issue that the automatic transmission isn't shifting if...
  8. Transmission Problem

    5.0L Tech
    Had this problem start with my tranny today. attached a video, if you cant see, ill be driving and my RPM's will jump up to 5500 and back down and back up again, and as it's doing that i will lose speed, almost as if im going into neutral. If you have any ideas on the issue and solving it please...
  9. 2014 Mustang GT: Auto transmission problem

    2011 - 2014 Mustang GT Tech
    I just got a new 2014 GT with the six speed select shift auto and I am having problems with the transmission. If I floor the car from a rolling start the transmission gets stuck in neutral between shifting from 2nd to 3rd causing the tach to redline. It is an intermittent problem. Anyone else...
  10. 1965 Mustang C4 Tranny Leak - identify part?

    Classic Tech
    Hello all! I have a 1965 Coupe with C4 auto which is leaking. I crawled underneath and there is a metal pan (transmission pan I assume - I'm not a mechanic, obviously!) and looks like the leak is coming from it - looks like bad seal? You can see in photo the tranny fluid around the bolts...
  11. Neutral Safety Switch Question

    Classic Tech
    I have a 67 Mustang and I just replaced the seals on the C4 and reinstalled it. Everything that I disconnected has been reconnected and the battery is fully charged but I can't get any turnover. No charge is going from the battery to the starter in park or neutral. Would this point to a problem...
  12. 2011 Mustang v6 Ac Problem??

    2011-2014 Mustang Talk
    Hey Everyone. I just created this for this question but will later update my profile. I have a 2011 Mustang v6 premium with ONLY 38,000 miles. I was driving down the highway and I heard a sudden noise and felt the car move just a little so I look around thinking it was a flat tire. It...
  13. Transmission Goes Boom!!! :(

    2005-2010 Mustang Talk
    Hey All, So i wanted to share with you my current situation and see if anyone has had a similar experience and might be able to give a few pointers... Recently I had been suspecting that the Transmission fluid in my 2005 GT 4.6L V8 was running low. What gave me this suspicion was very small...
  14. 2005 v6 automatic transmission not shifting right

    2005-2010 V6 Mustang Tech
    I have a 2005 4.0 mustang with an automatic transmission. It was recently serviced with a special oil (cant think of the right word) that lengthens the life and is supposed to make it shift smoother. However (from first to second gear especially) it doesn't shift until around 3500 rpm even if I...
  15. Mustang 2005 GT transmission fluid change HELP HELP HELP PLS! :)

    2005-2010 Mustang Talk
    Hey All, I would LOVE some help on the following topic! My 2005 mustang GT auto transmission needs an fluid change. So I know that the recommended would obviously be the Motorcraft Mercon V spec. But I really think the idea of using a fully synthetic oil such as that offered by Valvoline is...
  16. Gear Shifting Problem

    Classic Tech
    Vehicle: 1970 Mustang Grande Engine: 351 Cleveland Transmission: Automatic Before any problems: Gear shifted smoothly and effortlessly at 2500-3000 RPM Pre-Problem: She's slightly leaking transmission fluid now (never used too leak any fluids) From a complete stop I would slowly and...
  17. Transmission Cables - Why Did I Wait So Long?

    V6 Talk
    Shifting my automatic transmission was difficult, you really had to force it into gear. I finally took it to a shop and had the cables replaced. That was it, nothing more. Now it shifts as smooth as butter. Why did I wait so long? So if your older automatic Mustang doesn't shift like it's brand...
  18. p0743 code v6 2005 mustang please help!!

    Introductions
    I recently bought a 2005 4.0 v6 vortech h.o v2 supercharged mustang, 3.5" exhaust piping all the way from the headers.. But recently i was drinving my car and the gas was almost out and then all of a sudden my mustang starts to kind kick and feel really rough when coming to a stop or slowing...
  19. 2000 Mustang GT - Transmission issue

    Introductions
    Greeting all.. I have a 2000 GT that has the o/d light flashing and a CEL on. It is throwing a code for a range selector so I replaced that.. 5 miles later.. the o/d light is flashing and the CEL is back on... any suggestions?
  20. 1999 mustang gt automatic with slipping issues..

    4.6L Tech
    So, I just bought this 1999 Mustang GT with a 2000 model GT motor and I just installed a 4r70w automatic transmission out of a 2003 mustang gt. the tranny only has 45,000 miles on it and wasn't slipping when I pulled it. However, now that I have it in my 1999 gt, it slips as it goes into 3rd...
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