Question about 1999 Lincoln Navigator

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Changed fuel pump and now have overdrive flashing light

My 2001 Lincoln Navigator would not start on a short trip out of town,it was towed 126mile. We figured it was a fuel pump-we changed the fuel filter one month prior.We changed the fuel pump-we also cleaned battery.The vehicle starts good now but when taking off it does not take off like usual.Takes time to get speed,but does well when you got to 50 in town or 75 on hwy,just the getting started is very slow.We noticed that now the Overdrive Light is flashing,which it was not doing before(my check engine light was on for the filter,stayed on,we thought it would go off when we changed fuel pump)it did not.We want to know if there is something that may triggered this when changing pump- or if there is something we are overlooking-before we take it to dealership. Starts up with no problems now but just will not take off like before-if i were to get on the road and a car was coming too fast i would get hit-but once i have my speed up its ok.In manual there is a section that the transmission needs to learn how to think when battery is disconnected -could that be the issue and all we need is time?

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No you have a trans problem that need to be furthe investagated

Posted on Jan 02, 2009


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Related Questions:

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Is overdrive activated when the light at the end of the gear shift is on or off on a Lincoln navigator 2001

If the "Overdrive Off" indicator is illuminated, this will prevent the torque converter from locking and engaging overdrive. This can be useful when traveling through hilly regions or when heavily loaded to keep the transmission from continuously hunting for the correct gear. When the light is off, the transmission will operate normally, including locking the torque converter and engaging OD. You should normally drive with the light off. If the light is flashing, that's an indication of a transmission diagnostic trouble code being present.


Mar 01, 2017 | 2001 Lincoln Navigator

1 Answer

Changed battery now overdrive flashes check engine etc. transmission not shifting properly

Dear Anonymous,
I am sorry to have to tell you you are most likely to have to take your car to a Lincoln dealer and have your computer replaced, or re-programmed at the least.
This kind of mistake cannot be fixed for free.
God bless your efforts.

Dec 14, 2015 | 2000 Lincoln Navigator

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Overdrive light flashing

that means that your overdrive shift solenoid is stuck open or closed

Nov 15, 2012 | 2003 Lincoln Navigator

1 Answer

How do you replace fuel pump in lincoln navigator 2001

Fuel Pump Module Removal & Installation To Remove:
Highly flammable mixtures are always present in any fuel related component. Smoking or carrying lighted tobacco or an open flame of any type may ignite the flammable mixtures.
Even when the engine is not running, fuel in the fuel system remains under high pressure. Fuel system pressure must be relieved before working on or disconnecting any of the fuel lines, fuel tubes, or fuel system components. Failure to do so may result in accidental spraying of fuel, personal injury, or a fire hazard.
  1. Remove Fuel Tank. Fuel Pump ford-05-00-3947.gif

  2. Remove fuel pump lock ring.
  3. Remove fuel pump.
  4. Remove and discard fuel pump O-ring.
To Install:
  1. Install new fuel pump O-ring.
  2. Install fuel pump.
  3. Install fuel pump lock ring. Tighten to 66 ft-lb (89 Nm).
  4. Install Fuel Tank.
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Oct 29, 2010 | 2001 Lincoln Navigator

1 Answer

Overdrive switch blinking on and off

I have lincoln navigator 2001, the over drive light blinks and it won't drive on 'D' only on 1 and 2. What will be the problem.

Sep 28, 2010 | 2001 Lincoln Navigator

1 Answer

Is the overdrive light supposed to be on at all times on a 2001 lincoln navigator?

if it is flashing then it is a MIL. if it is on steady then it may mean that o/d is turned off. is it shifting fine?

Apr 30, 2010 | 2001 Lincoln Navigator

1 Answer


Sounds like a pinion bearing is bad in the rear differential.
If the sound is in the rear and louder under load (acceleration or pulling) and quieter on no load (deceleration) it is a 99% chance the bigger of the 2 bearings on the pinion is bad.
The big one is under load when accelerating and the smaller one is under load on deceleration.
The rest of the diff should be OK.
Just put in 2 complete pinion bearings and a new pinion seal and fresh fluid and you should be fine.
In the future don't forget to change the diff fluid once in a while.
And as a tow vehicle the trans fluid should be changed more often too and STAY OUT OF OVERDRIVE when towing.
Because you may have a failed may be over loading your vehicle and exceeding it's towing capacity.
Ford has a tendency to be VERY optimistic with their towing/loading ratings.
Is it rated for 30% more than what you are pulling?

Nov 09, 2009 | 2001 Lincoln Navigator

1 Answer

I have a 2001 lincoln Navigator The overdrive kept flashing

one question at a time, the OD flashes to let u know that the transmission control module has detected a fault in the trans, this is useualy slipping, u may not even feel it. Have it tested for trouble codes.
As for the AC, is the system fully charged, does the compressor run?

Mar 24, 2009 | 2001 Lincoln Navigator

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