Transmission not shifting?

Tiny
POWERSTROKE_GUY2000
  • MEMBER
  • 2002 FORD F-250
  • 7.3L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 246,000 MILES
Almost a year ago my reverse went completely out. Then followed neutral and park turn into forward gears. And now my truck won't move in any selected gears, it just sits in the driveway because I don't have enough money to pay for an upgraded enough transmission. The fluid was nearly empty after my brother borrowed it for 3 weeks so I poured as much as I could In there with a cold engine. It won't start right now because it's dead, all other problems set aside, I can pull the transmission myself and work on it myself, but what exactly in the transmission sounds like the culprit. I was thinking about getting a rebuild kit, and new pump and torque converter.
Wednesday, October 16th, 2019 AT 4:03 PM

36 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

Yes, that would be a start but there may be more damage internally. From being bad over a year, it could have progressive damage like a drum, band, or valve body issue.

This guide will help us fix it

https://www.2carpros.com/articles/automatic-transmission-problems

Roy
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Wednesday, October 16th, 2019 AT 7:02 PM
Tiny
FORDTRANSISSUE
  • MEMBER
  • 1 POST
  • 2001 FORD F-250
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
2001 f-250 super duty 5.4 aluminum headsgas auto with overdrive

my f 250 will not shift out of second gear, when going down hill truck speeds up from 2nd gear and engin does not have restriction from trany. As truck costs I try to excelerate and the tack just reves up. Pulled over to cycle gears and the truck will not go into reverse. Extremley cold. New fluid installed but not filter truck drove well last 2 days but acting up today. Any thoughts. Fluid is above fill mark but not fomy/
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Tuesday, July 28th, 2020 AT 11:05 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The truck is in limp mode on transmission take it to a trans shop probably needs a rebuild
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Tuesday, July 28th, 2020 AT 11:05 AM (Merged)
Tiny
ANNETTEDODSON
  • MEMBER
  • 1 POST
  • 1999 FORD F-250
  • 2WD
  • AUTOMATIC
We just replaced the transmission with brand new one
The gears will not change from drive and will when you put it into 2nd. It also idles high
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Make sure all your electrical connections are good, check fluid to be full then scan for codes. For high idle clean throttle plate on both sides and iac hole with choke cleaner then check for vacuum leak.
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
BIG SHOES
  • MEMBER
  • 1 POST
  • FORD F-250
I have an F250 and it won't shift from park unless you press the brake in hard. Any sugestions on what's causing the problem?
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
TAURUSWHEEL
  • MECHANIC
  • 718 POSTS
The mlps, known as the neutral safety switch, could be out of adjustment, or the electrical end if it could be acting up. Possibly a good idea would be to replace the brake light switch, it's cheap, and relatively easy to do, see if it makes a difference
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
BILL WALLSTROM
  • MEMBER
  • 8 POSTS
  • 1998 FORD F-250
  • V8
  • 190,000 MILES
Has overdrive (button on steering column), three speed automatic transmission behind 351 W. Trouble shifting from first to second. If I go high revs then back off quickly it shifts. That is my only problem.
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
HARRY P
  • MECHANIC
  • 2,292 POSTS
It sounds like it is struggling to build fluid pressure. Either it is really low on fluid (meaning there is a leak to be fixed), or it needs the fluid and filter changed. At that mileage, if it has not been changed at least once, then that is probably your problem.
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
BILL WALLSTROM
  • MEMBER
  • 8 POSTS
Changed filter and fluid a year ago. It had the problem before and after that.
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
HARRY P
  • MECHANIC
  • 2,292 POSTS
I still believe that it is having trouble building pressure for one reason or another. If there is a dent in the transmission pan, that could cause an issue as well.

I am not big on transmission additives, but I have had decent luck with this stuff:
About Motor Purr: http://motorpurr.com/tune-up/

Buy Motor Purr: https://www.ebay.com/itm/MOTOR-PURR-GAS-DIESEL-FUEL-INJECTOR-CLEANER-1515-BY-JONES-SAME-AS-TUNE-UP/162814823423?hash=item25e8850bff:g:NlgAAOSwTuJYnsjg
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
I do not see a 5.8l engine being offered in the 1998 F250, so my question has got to be is this the original transmission or not? If not, is it an electronic transmission with shift solenoids?
Or the old type transmission with I believe a intermediate band?
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
BILL WALLSTROM
  • MEMBER
  • 8 POSTS
So sorry! It is a 1995.
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
J.STIEG
  • MEMBER
  • 352 POSTS
  • 1992 FORD F-250
First I had a problem with the truck engine having a bad misfire while the transmission was fine.

I read codes and got a EPC electronic pressure control code. I found the bad wire coroded off at the trans harness connector, So I repaired and EPC code went away, Along with the misfire.

But now the transmission takes off in what seems to be 2 or 3rd while in OD range and other erratic behavior.

So currently I read codes and I get code 512, 121 and cannot seem to reset them by disconnecting the batt terminal.
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
One code is the eec processor keep alive memeory failed and theother is throttle position out of test range. The tps diagnostic is binding throttle, tps not seated, faulty tps and or faulty eca. Code 512 may have been done when you disconnected then reconnected battery. Check for a bad fuse or burnt fusible link.
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
I am going to assume this has the C6 transmission. Try adjusting the intermediate band. Loosen the lock-nut a few turns, while holding the screw. Tighten the adjustment screw down to 10 ft lbs. Then back off one and half turns. Hold the screw in this position while you tighten down the lock nut.
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
J.STIEG
  • MEMBER
  • 352 POSTS
What fuse, or fuse able link should I be looking for, and where?
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
BILL WALLSTROM
  • MEMBER
  • 8 POSTS
Thank you, I will try that.
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
J.STIEG
  • MEMBER
  • 352 POSTS
I checked fuse 13 which is a 15a and it was not blown. Can I check at PCM, Where is PCM.

Speedometer works, And transmission will only shift starting in 3rd to overdrive.
While in the Drive range.

I really need to take care of these issues.
How do I check KAM power at PCM?
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check the starter I have them pointed out in pic. Also check by fuse box.
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Tuesday, July 28th, 2020 AT 11:06 AM (Merged)

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