Question about 2006 Lincoln Navigator

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My 2006 Lincoln Navigator has a problem when it is in overdrive. If the rpms are low and I step on the gas the car jolts back and forth until the rpms increase. It kind of does the same thing in 4th if I punch the gas it kind of has a hesitation. I thought that it was the transmission but no check light have come on. My buddy who works for Land Rover said that it sounds like it could be the fuel pump.

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  • Lincoln Master
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Your friend could be right. Normally if you have a cylinder miss or a problem with the transmission you would get a check engine light and a trouble code. Low fuel pressure may not show up like that.
You may want to check fuel pressure at idle and on the road.

Posted on Jul 30, 2013

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Posted on Jan 02, 2017

chuck943
  • 783 Answers

SOURCE: 2000 Lincoln Navigator Stalling at low RPMS sporadically

Idle Air Control (IAC) motor is sticking.You can try taking it off and cleaning it but most likely will have to replace it.

Posted on Feb 13, 2009

  • 5467 Answers

SOURCE: 99 Lincoln Navigator

There are a couple of parts you can try and if they have not coded on the cars computer, a dealer may be able to look at service bulletins. There is a differential speed sensor and an antilock brake sensor. You can have locking clutch paks and may require a special additive. An old fashion U-joint can vibrate under load.

The good news is with a Vin# the dealer can pull up the entire service history if the car was serviced under warranty or in a Ford dealer anywhere. They just do not want you to know the past owner.

Posted on Jul 23, 2009

RonPark
  • 855 Answers

SOURCE: 98 lincoln navigator loud noise, shaking, high rpm at idle, drive

I don't know how much oil you had to put in but it sounds like you have maybe more than opne issue and both sound major. One is engine reving and speed not picking up sounds like trans problem. Two the engine shaking and making noise and being run low on oil leans toward possible engine damage. If your mechanicly inclined check all fluids and when checking trans fluid smell it. If it smells burnt the trans has been damaged. Check oil pressure and make sure coolant is full.You may have to take it into the shop.

Posted on Oct 06, 2009

  • 1 Answer

SOURCE: 2003 Lincoln Navigator stumbles/bucking under mild acceleration

I have a 2003 Nav with the exact same problem. I've found it diminishes when taken out of overdrive. Also it's intermittent but more towards bucking. Sorry to post this under solutions.

Posted on Nov 06, 2009

  • 132 Answers

SOURCE: need to replace fuel pump in99 lincoln navigator

Their should be a bleed valve on the fuel rail if it has injecters. the tank is held on with two strapes that have bolts on one side.

Posted on Jan 07, 2010

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