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Transmission

Tiny
DOWNSHIFT
  • MEMBER
  • 1995 FORD
  • 5.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 37,000 MILES
Abrupt down shift most of the time after getting up to operating temperature when accelerating after reaching desired speed. Also it goes to neutral first for a split second causing a more severe down shift. Two years ago I had this same problem my mechanic change from Mercon to the older style oil and it solved the downshift. Now it is back and worse. My car is all original factory parts except aluminum radiator and mufflers no other parts have been changed or modified.
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Thursday, July 6th, 2017 AT 7:33 PM

9 Replies

Tiny
HARRY P
  • MECHANIC
  • 2,292 POSTS
Have you checked the fluid level? Often times transmission shift issues happen when it is low. Start with that and let us know.
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Thursday, July 6th, 2017 AT 7:43 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Have a transmission professional scan for codes it may be a valve sticking in valve body. Check fluid level as well.
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Friday, July 7th, 2017 AT 9:18 AM (Merged)
Tiny
DOWNSHIFT
  • MEMBER
  • 5 POSTS
Fluid level is fine could temperature be a factor because it seems to do better when cooler
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Saturday, July 8th, 2017 AT 6:59 AM
Tiny
DOWNSHIFT
  • MEMBER
  • 5 POSTS
Has anyone heard of the neutral safety switch causing this exact problem ? ? See http://forums.corral.net/forums#/topics/1340366?page=1
I do not drive my car much at all, obviously with the mileage at 37k
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Saturday, July 8th, 2017 AT 1:32 PM
Tiny
HARRY P
  • MECHANIC
  • 2,292 POSTS
I've never heard of a neutral safety switch causing this. That switch just keeps you from shifting out of park until you push the brakes. I have heard of a TCC solenoid (torque converter clutch solenoid) cause some funny shifting up and down and up down for no reason. It happens when the solenoid is too weak or if the fluid level is low on some cars.
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Saturday, July 8th, 2017 AT 2:05 PM
Tiny
DOWNSHIFT
  • MEMBER
  • 5 POSTS
Thanks for the info. I dropped my car off at a qualified mechanic. Downshifted once at 19 miles out of 50.
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Sunday, July 9th, 2017 AT 11:37 AM
Tiny
HARRY P
  • MECHANIC
  • 2,292 POSTS
Let us know what the mechanic comes up with. I'm interested now
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Sunday, July 9th, 2017 AT 2:49 PM
Tiny
DOWNSHIFT
  • MEMBER
  • 5 POSTS
I picked up my car yesterday it has a new Motorcraft MLPS sensor and so far no more downshifting driven it two days now
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Friday, July 14th, 2017 AT 5:34 PM
Tiny
HARRY P
  • MECHANIC
  • 2,292 POSTS
I didn't think they had a range switch like that in a 97. Interesting. Makes sense though
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Friday, July 14th, 2017 AT 6:53 PM

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