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Old 04-13-2012, 06:32 AM   #1
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To over drive or not to over drive?

I have a 1990 Pace Arrow. It has an over drive button on the dash. I understand what over drive is. My question is should I leave it in over drive all the time for better gas mileage? When I push it on it does not down shift as much around town. And on the road its obvious that it needs to be in over drive to get into high gear. Around town it is more responsive and seems to work better out of over drive. And like I say on hi way it needs to be in over drive. My question has to do with the fact that when I turn the engine off the over drive switches back to over drive. And I have to make a point to put it on to turn off over drive. Does anyone have any thoughts about how an old time slandered shift kind of guy should use over drive???
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Old 04-13-2012, 07:00 AM   #2
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Sounds like you have the same after market unit I have on my old MH. With the over
drive off you have the standard three gears forward and with it on you have a total
of six. You are right at low speeds with it on it does not respond well.
In town I turn it off on the road it is on and when pulling a grade you can use it to
split gears by turning it off and on and using the **** lever.
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Old 04-13-2012, 07:25 AM   #3
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Spliting gears as in switching it on the fly?
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Old 04-13-2012, 07:38 AM   #4
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I have always been taught that you let it go into overdrive when it wants to unless it is constantly changing back and forth, then turn it off.

Learn to let the tyranny decide what it wants. When pulling steep grades it won't go into overdrive anyway unless you let up on the gas. Around town you're not going fast enough to hurt anything.
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Old 04-13-2012, 07:43 AM   #5
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You don't say what chassis you have. I have confirmed with Ford that when the over drive is engaged , it will reduce mileage by 1-1 1/2 mpg. That's also what I experienced before I found out.
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Old 04-13-2012, 07:53 AM   #6
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That is what mine allows and it shifts very fast, I talked with the factory and they told
their electric over drive can be operated at any speed.
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Old 04-13-2012, 08:07 AM   #7
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What gave me any cause for thought was the idea if I don't pay any attention to over drive button the rig is always in over drive? Is that the suggested mode to leave it in at all times? And I do have the Ford chassis....
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Old 04-13-2012, 08:14 AM   #8
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It is ok to leave it in over drive unless you need the extra power a lower gear would
provide.
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Old 04-13-2012, 08:20 AM   #9
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I use mine on steep inclines( up and down ) and in city traffic. Ford has a great cust service dept for Rv's. 800-444-3311. They will fully explain it to you if you wish.
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Old 04-13-2012, 08:57 AM   #10
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In general, OD is for flat crusing with minimal loading. Leave it off around town and pulling or decending hills, If you leave it on while pulling or decending a hill your tourque converter may not lock-up and begin to slip and heat up. Lugging up a hill in OD will result in poorer fuel milage and strain on the engine and tranny.
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Old 04-13-2012, 09:28 AM   #11
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I can take it out of overdrive on the fly or ingage it??
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Old 04-13-2012, 09:39 AM   #12
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I can turn mine on or off on the fly per the operating instructions from the company.
It reminds me of the two speed rear ends but it is a lot easier than they were.
On mine besides off and on I can select manual or auto operation and I installed a
foot switch like the old headlight floor switches to turn it on and off.
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Old 04-17-2012, 08:36 PM   #13
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Quote:
Originally Posted by homeless View Post
I have a 1990 Pace Arrow. It has an over drive button on the dash. I understand what over drive is. My question is should I leave it in over drive all the time for better gas mileage? When I push it on it does not down shift as much around town. And on the road its obvious that it needs to be in over drive to get into high gear. Around town it is more responsive and seems to work better out of over drive. And like I say on hi way it needs to be in over drive. My question has to do with the fact that when I turn the engine off the over drive switches back to over drive. And I have to make a point to put it on to turn off over drive. Does anyone have any thoughts about how an old time slandered shift kind of guy should use over drive???
What kind of transmission are we talking about here? Do you have the over/under drive that is mounted at the rear of the transmission? Or are you saying the Ford transmission that you have has this in or out switch on the dash? I am confused.

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Old 04-18-2012, 09:15 AM   #14
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Its on the dash a button that says OD off And I have to push it on, light lite, to take it out of over drive. And when I turn truck on it stays in OD unless I push the button....
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