Does using overdrive hurt or help?
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Junior User
Joined: Jan 2009
Posts: 93
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From: Knoxville, TN
Does using overdrive hurt or help?
The DW and I have this conversation all the time,
I ask her to use the OD OFF when ever were pulling a good grade,
She says I thought its an automatic! UGG
I never use od while towing our 19.5' (3800#) T.T.
What does it do inside the trans, just keep you in 3rd ? - or does it change other shift points?
97 E-150 4.2 with the 4EOD ( I belive)
Hope I am right !!! LOL, OK just bring it!
Thanks in advance,
Wayne
I ask her to use the OD OFF when ever were pulling a good grade,
She says I thought its an automatic! UGG
I never use od while towing our 19.5' (3800#) T.T.
What does it do inside the trans, just keep you in 3rd ? - or does it change other shift points?
97 E-150 4.2 with the 4EOD ( I belive)
Hope I am right !!! LOL, OK just bring it!
Thanks in advance,
Wayne
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,697
Likes: 2,619
From: SE Florida
You have a 4R70W transmission. Turning off the overdrive just prevents the trans from shifting to fourth gear. It doesn't change any other shift points.
I don't turn the overdrive off when approaching a hill. It's an automatic! It knows when it needs to downshift.
If your trans will stay in overdrive while towing your trailer you can leave it in overdrive. If it downshifts and upshifts frequently then turn the overdrive off.
I don't turn the overdrive off when approaching a hill. It's an automatic! It knows when it needs to downshift.
If your trans will stay in overdrive while towing your trailer you can leave it in overdrive. If it downshifts and upshifts frequently then turn the overdrive off.
Thread Starter
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Junior User
Joined: Jan 2009
Posts: 93
Likes: 0
From: Knoxville, TN
Thanks Mark, I was hoping to here from you on this.
With the 4.2 in my van it takes more throtle in 4th than 3rd to hold speed up a long grade ( east tn! ) so thats my thoughts. So the DW is right, damn.
With the 4.2 in my van it takes more throtle in 4th than 3rd to hold speed up a long grade ( east tn! ) so thats my thoughts. So the DW is right, damn.
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