Question about 1998 Ford Expedition

1 Answer

Expedition knock sensor

I have a 98 expedition with a 4.6L and the knock sensor needs to be replaced. I know that the its a long project and its under the upper intake. Is there a way to replace it without removing everything.

Posted by big_bob_bear on



1 Answer


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.


    An expert that has over 500 points.

  • Expert
  • 218 Answers


Posted on May 14, 2009


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

1994 nissan sentra sx 200 knock sensor location

Melvia, Knock sensor located under the intake manifold between cylinder #2-3 I believe, hard to change with out removing intake manifold, but can be done. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
1995 1999 Nissan Maxima 1 2 Knock sensor replacement
KA24DE Knock Sensor Code 34 FREE REPLACEMENT How To
Knock sensor on 1995 Altima
Get the Best Priced Nissan Sentra Knock Sensor

Aug 21, 2016 | Nissan Cars & Trucks

1 Answer

04 Chevy avalanche knock sensors location

Nathan, 2 Knock's are located under intake manifold.
Check the attached links,
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

How To Install Replace Engine Knock Sensor 2000 06 5 3L Silverado Sierra...

Knock sensor 5 3 4 8 6 0 replacement

05 Chevy Avalanche Knock Sensors

4 8 5 3 6 0 knock sensor replacement GM

Mar 06, 2016 | Cars & Trucks

1 Answer

2005 suburban 5.3 engine where are knock sensors located and how do you replace them

two knock sensors.under phlemm assy. replace cover gasket, two sensors and wire harness.

Jan 27, 2013 | 2005 Chevrolet Suburban

1 Answer

Locating the knock sensor on a 1998 ford expedition

It is under the intake manifold see picture below, it is the green part in center of engine valley between the heads.

Nov 05, 2012 | 1998 Ford Expedition

1 Answer

I want to know where the knock sensor is ,in a ford expedition 1998 4.6 by picture

Do you mean NOX sensor ? I believe on that unit it is on the exhaust system just under the exhaust manifold right side of the car as seen from the drivers seat.

Nov 29, 2011 | 1998 Ford Expedition

1 Answer

Can I replace the knock sensor on a 1999 ford expedition Myself and if so what is the location

Yes you should be able to do this yourself. The part at autozone is about 42 bucks. The knock sensor is located on the right side of the engine block under the exhuast manifold on the V6. It should also be in the same general area on a V8.

Jul 25, 2011 | Ford Expedition Cars & Trucks

1 Answer

Need to know how to install knock sensors and where they are need diagram. 2005 expedition 5.4 engine

Hello adamjerkins,

It is somewhat complicated to change the knock sensors. There are two of them and they are located under the intake manifold. The intake manifold must be removed. I would recommend tha you replace both while you have the engine apart.

What leads you to believe the knock sensors are bad, I've seen few bad knock sensors? The knock sensor issues more times than not have been caused by other problems.

After you remove the intake manifold disconnect the knock sensor connectors. Remove the bolts and the two knock sensors then replace with new knock sensors tighten the bolts to 15 foot pounds. Reinstall manifold. The total job for an experienced mechanic with tools is about 5 hours. Not a good job for a beginner.


Mar 05, 2011 | 2005 Ford Expedition

1 Answer

Why is the right side of my engine on my 2003 ford expedition knocking?

How do you know it is the right side?
How do you know it is ,in fact knocking

Do you have a Knock Sensor Code set?

V6 or V8

May 12, 2010 | 2003 Ford Expedition

1 Answer

Service engine soon light is on. weird noise (knock) on muffler. engine oil recently changed.

need new engine sensor, perhaps and most likely you need to replace your "knock sensor" which is a very coslty job

Sep 27, 2008 | 2004 Ford Expedition

Not finding what you are looking for?
1998 Ford Expedition Logo

Related Topics:

816 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

85239 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

gerry bissi

Level 3 Expert

4388 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides