2000 Transmission Issues
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2000 Transmission Issues
About 36k miles and 3 years ago, my 4R70W decided that reverse was the only gear it wanted to use. It had been acting up for about a while so I new it would eventually give up. I had the unit rebuilt then and over the past couple of months the transmission jerks randomly while going down the road usually around 45, 55 & 65 mph. It is more noticeable in high gear and overdrive.
Does the transmission need replacing or is it another issue?
2000 Ford F150 XLT Extended Cab
4.6L V8
Automatic Transmission
249,000 +/- miles
Does the transmission need replacing or is it another issue?
2000 Ford F150 XLT Extended Cab
4.6L V8
Automatic Transmission
249,000 +/- miles
Thread Starter
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New User
Joined: Apr 2018
Posts: 2
Likes: 0
I just put new plugs and coil packs in it so hopefully that's not the issue.
Lead Driver
Joined: Sep 2006
Posts: 7,907
Likes: 143
Note the following;
Does it still do the same out of OD or down shifted with increased engine RPM?
If no, you have a faulty coil on one cylinder.
If yes, it's something else.
To find out, use a Scanner to look at mode 6, test 53.
There you will see the misfire counts for each cylinder.
If one cylinder is high, it's coil is suspect.
You will not see a code generated for this kind of fault so you need this way to detect which cylinder is the cause.
Otherwise use a Scanner set up to trap and freeze the data for the cause area.
Good luck.
Does it still do the same out of OD or down shifted with increased engine RPM?
If no, you have a faulty coil on one cylinder.
If yes, it's something else.
To find out, use a Scanner to look at mode 6, test 53.
There you will see the misfire counts for each cylinder.
If one cylinder is high, it's coil is suspect.
You will not see a code generated for this kind of fault so you need this way to detect which cylinder is the cause.
Otherwise use a Scanner set up to trap and freeze the data for the cause area.
Good luck.
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