2003 Ford Expedition Logo
M
Marquis Gaines Posted on Dec 04, 2013
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Nocking sound It makes the knocking until you start to accelerate. It sounds like it is coming from the transmission but, I am pretty sure it is not. It has not ever had any problems before except for the transmission but, they redid it as soon as we bought it.

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NOMERCYINSITE

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  • Posted on Dec 04, 2013
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OK let's do a little check. with the car in a clear area and no kid's or anyone around the car get in and start the engine.Now do you hear the noise with the car sitting at an idle.Let's say yes then put your foot on the brake and put the car in gear do you hear the knock if so hold the brake secure make sure no one is in front of the car and apply the gas lightly if the noise stop's then you have a loose torque converter to flywheel the bolt's are not tight..Now if you hear the knock and it's high pitch metallic then chance's are it's a rod or lifter in the engine.If the noise is a thumping dull noise you have a bad crankshaft.My guess is the torque converter because you said the transmission was worked on and a lot of time's without Loctite and the proper tourque the converter bolt's will work loose.GOOD LUCK HOPE THIS HELP'S

5 Related Answers

Anonymous

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  • Posted on Jul 21, 2009

SOURCE: Sluggish and no pwer up a hill. Almost backfiring in second gear.

Yea probably the bad gas clogged the filter or clogged an already dirty fuel filter. Try changing it. If not I would say try using a lower gear by turning off the overdrive.

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Anonymous

  • 10865 Answers
  • Posted on Aug 23, 2009

SOURCE: 2006 expedition knocks at 40-45 MPH

Toss a couple cans of engine medic into your gas tank and I bet you will solve alot of your problem

Anonymous

  • 336 Answers
  • Posted on Jan 09, 2010

SOURCE: my car wont start it makes a clicking sound when

Sounds like your battery is dead. Take it to a local auto parts store and have them check the alternator.

Anonymous

  • 24 Answers
  • Posted on Nov 03, 2010

SOURCE: My 1997 Ford Explorer Eddie

It could be rod knock: if so, plan on an engine change/rebuild. On my 97 F 250, 5W motor oil is recommended,so you can't put in heavier oil. But that's not a solution. Something mechanical is askew.

Dennis

  • 100 Answers
  • Posted on Jan 07, 2011

SOURCE: my ford ranger started making

Mass Air Flow Sensor

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