Transmission issues need help
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3rd Gear
Joined: Jun 2022
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Transmission issues need help
The truck is a 2016 f150 4x4 xlt 2.7 witb 75000 on it.
The other i was driving and stopped at light went to take off and the truck hesitatedand pulledaway slowly. Pulled over with wrench light on. Restart the truck and it was gone just had a check engine light. Drove 5 minutes and the wrench came on and it slammed into 2nd gear. Pulled over restated it and wrench was goon. Few minutes later driving in manual the M staying in 4th gear to hopefully not damage my transmission but noticed that the M4 started to flash on and off and the wrench came back that continued all the way home would be flashfor 30 sec to a minute then stop for 10 or more. Forscaned showed these codes p0706 p0707 p1702 p1921. Took to local shop but they said it the lead frame needs replacing with out even openingthe transmission not sure how they came to that issue. But part is more then month out. Pulling if from this shop and going to a professional transmission shop. In my research i Found old articles talking about replacing the range sensor. Should I have them replace the range sensor first?
The other i was driving and stopped at light went to take off and the truck hesitatedand pulledaway slowly. Pulled over with wrench light on. Restart the truck and it was gone just had a check engine light. Drove 5 minutes and the wrench came on and it slammed into 2nd gear. Pulled over restated it and wrench was goon. Few minutes later driving in manual the M staying in 4th gear to hopefully not damage my transmission but noticed that the M4 started to flash on and off and the wrench came back that continued all the way home would be flashfor 30 sec to a minute then stop for 10 or more. Forscaned showed these codes p0706 p0707 p1702 p1921. Took to local shop but they said it the lead frame needs replacing with out even openingthe transmission not sure how they came to that issue. But part is more then month out. Pulling if from this shop and going to a professional transmission shop. In my research i Found old articles talking about replacing the range sensor. Should I have them replace the range sensor first?
Tuned
Joined: Jan 2015
Posts: 472
Likes: 153
From: Southeast Wisconsin
A couple quick questions...starting with these:
1. Did you disconnect the battery for a while to reset computers?
2. Have you had the battery tested recently? And How old is it?
3. What maintenance has been performed on this transmission?
1. Did you disconnect the battery for a while to reset computers?
2. Have you had the battery tested recently? And How old is it?
3. What maintenance has been performed on this transmission?
Thread Starter
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3rd Gear
Joined: Jun 2022
Posts: 3
Likes: 0
Replace 3 months ago
never
Tuned
Joined: Jan 2015
Posts: 472
Likes: 153
From: Southeast Wisconsin
Ok, great. Since you are a month out on the lead frame, you may as well pull the pan and clean the metal particulate off the pan magnets. The magnets will be caked with metallic sludge, and you will see the metal in the oil if you hold it up to the sunlight. The solenoids in these transmissions are very sensitive to metal particulate floating around the oil. Ideally, this should have been done around the 40K mile mark. NEVER follow the Ford recommendations for transmission service at the 150K mark! When doing this, you will need to replace 3 - 4 quarts of fluid. Then drive it some. Then suction another 3 quarts from the dipstick hole and replace. At this point you will have replaced approx 1/2 the fluid.
You have nothing to lose by doing this, as it needs to be done whether you have a lead frame replaced or not. There multiple threads on this forum regarding this issue and you may want to do a search on this.
If you end up replacing the lead frame, another 3 - 4 quarts will be replaced at that time, and then you will have replaced 3/4 of the fluid and you should be good for a while.
You have nothing to lose by doing this, as it needs to be done whether you have a lead frame replaced or not. There multiple threads on this forum regarding this issue and you may want to do a search on this.
If you end up replacing the lead frame, another 3 - 4 quarts will be replaced at that time, and then you will have replaced 3/4 of the fluid and you should be good for a while.
Thread Starter
|
3rd Gear
Joined: Jun 2022
Posts: 3
Likes: 0
Ok, great. Since you are a month out on the lead frame, you may as well pull the pan and clean the metal particulate off the pan magnets. The magnets will be caked with metallic sludge, and you will see the metal in the oil if you hold it up to the sunlight. The solenoids in these transmissions are very sensitive to metal particulate floating around the oil. Ideally, this should have been done around the 40K mile mark. NEVER follow the Ford recommendations for transmission service at the 150K mark! When doing this, you will need to replace 3 - 4 quarts of fluid. Then drive it some. Then suction another 3 quarts from the dipstick hole and replace. At this point you will have replaced approx 1/2 the fluid.
You have nothing to lose by doing this, as it needs to be done whether you have a lead frame replaced or not. There multiple threads on this forum regarding this issue and you may want to do a search on this.
If you end up replacing the lead frame, another 3 - 4 quarts will be replaced at that time, and then you will have replaced 3/4 of the fluid and you should be good for a while.
You have nothing to lose by doing this, as it needs to be done whether you have a lead frame replaced or not. There multiple threads on this forum regarding this issue and you may want to do a search on this.
If you end up replacing the lead frame, another 3 - 4 quarts will be replaced at that time, and then you will have replaced 3/4 of the fluid and you should be good for a while.
Well have it a a professional transmission shop. Picked it up from the first shop and while driving it to the professional transmission shop the wrench came back I pulled over as usual to restart truck but would not restart had to get it towed.
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