Results 1 to 5 of 5

Thread: Curious about tranny behavior......

  1. #1
    Join Date
    Apr 2021
    Location
    Buffalo/MN
    Posts
    2

    Curious about tranny behavior......

    I've owned an 09 CVPI and an 07 Grand Marquis and I realize that my new old 03 Marauder is a totally different beast. It appears to be in pretty damn good shape, and considering everything else on the car I'm guessing there's a decent chance the car was treated pretty well. Everything OEM with now 81,000 miles. If I've got the throttle about 75% it will act like it's about to shift at 3000 RPMs in 2nd or 3rd (possibly both), it'll hold at 3000 for a second, keeping going then shift. Tranny fluid level is good. Doesn't really seem to be weird anywhere else. Just wondering if this is usual behavior for the 4R70W transmission?

  2. #2
    Join Date
    Jun 2011
    Location
    Northeast OH
    Posts
    7,743
    If it has stock tuning, then the shift schedule is terrible, it regularly gets to OD and lock up, then downshift, back to OD etc. Get a tune from MOs speed shop in vendor section. Most of us have tunes by them now. The tune changes the shifting and lock up. Leaves car in powerband
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

  3. #3
    Join Date
    Aug 2010
    Location
    Southern NJ - Exit 4
    Age
    59
    Posts
    3,900
    Quote Originally Posted by DJB_1983 View Post
    I've owned an 09 CVPI and an 07 Grand Marquis and I realize that my new old 03 Marauder is a totally different beast. It appears to be in pretty damn good shape, and considering everything else on the car I'm guessing there's a decent chance the car was treated pretty well. Everything OEM with now 81,000 miles. If I've got the throttle about 75% it will act like it's about to shift at 3000 RPMs in 2nd or 3rd (possibly both), it'll hold at 3000 for a second, keeping going then shift. Tranny fluid level is good. Doesn't really seem to be weird anywhere else. Just wondering if this is usual behavior for the 4R70W transmission?
    I believe that this is the "hunting" (for gear) behavior found in our stock tune and trannys. A MartyO tune will take that right out and give much more positive shifting.

    Sent from my Pixel 3a XL using Tapatalk
    03 Black MM: Trilogy #19, Build Date 04/02/03 #7113
    03 SB MM: Lidio Tune/JLT CAI DD Build Date 04/02/03 #7114

  4. #4
    Join Date
    Apr 2021
    Location
    Buffalo/MN
    Posts
    2
    Just contacted him. Very much appreciated, the both of you.

  5. #5
    Join Date
    Aug 2010
    Location
    Southern NJ - Exit 4
    Age
    59
    Posts
    3,900
    Quote Originally Posted by DJB_1983 View Post
    Just contacted him. Very much appreciated, the both of you.
    No problem. Put 410s in it and it will feel like a different car.

    Sent from my Pixel 3a XL using Tapatalk
    03 Black MM: Trilogy #19, Build Date 04/02/03 #7113
    03 SB MM: Lidio Tune/JLT CAI DD Build Date 04/02/03 #7114

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Cooling fan behavior
    By paheff in forum Shop Talk
    Replies: 13
    Last Post: 07-18-2007, 10:52 AM
  2. Odd behavior from my car
    By Sully008 in forum Shop Talk
    Replies: 14
    Last Post: 05-06-2006, 08:21 PM
  3. trans behavior
    By Bradley G in forum Shop Talk
    Replies: 5
    Last Post: 01-26-2005, 09:25 PM
  4. Comment on Overdrive Behavior
    By jonroe in forum Community Discussion
    Replies: 7
    Last Post: 12-06-2004, 05:26 PM
  5. ODD Behavior
    By Dan in forum Shop Talk
    Replies: 19
    Last Post: 12-01-2004, 04:35 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •