Question about 1998 Lincoln Navigator

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Whats the egr valve code on a 98 Lincoln navigator thats 4wd

My engine light is on the truck sometime stalls out there's no heater takes time to catch up on speed but when it catches up it wants to go

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You have more than 1 problem. Sometimes EGR flow code is wrong because the paths under the throttle body are clogged and EGR is ok. Mystery is lack of heat which can affect engine controls. Could be simply thermostat or sensor for water temp stuck on hot. Stall out is from cold start cycle not working because of false heat sensing.

Posted on Jan 30, 2017


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I have a 98 lincoln navigator I got the egg valve replaced and my check engine light came back on with the code p0401 what should I do next to fix the problem

TYPE: OBD PO401 & study the code

I think your best to have a professional use
the proper testing tools, to actually find a problem

You can throw parts at it for a long time, if you do not
understand the system your working on, or have no factory
service manuals or trouble charts to follow

I see you said you got a part replaced

So the shop failed to road test or look at data to confirm
the repair,too bad,that seems to be the problem the last 25 years

Oct 02, 2014 | 1998 Lincoln Navigator

1 Answer

98 navigator lincoln will not idle

I'm going to assume the check engine light is not on, otherwise you would have checked the computer for trouble codes by now.
The computer adjusts idle speed by controlling the air going into the throttle body by way of the idle air control valve. The valve could be faulty, or the throttle body could be dirty.

Dec 15, 2012 | 1998 Lincoln Navigator

1 Answer

I have a 98 Lincoln Navigator that has a hard time starting. Lights go dimm and engine doesn't crank right away.

Have battery tested , my truck did the same last week & it left me sitting . My battery was bad . Any auto zone or advance will check it for free

Jul 14, 2012 | 1998 Lincoln Navigator

2 Answers

2000 Lincoln Navigator with rough idling and service engine light

i had the same trouble, there is a rubber boot under the cover on the top of the motor, it is coming from the egr valve, takes about 5 mins to repair and less than 5 dollars.

Jul 21, 2009 | 2003 Lincoln Navigator

1 Answer

Engine light on the dashboard and stalls from time to time

look for a pipe that goes from the exhaust to the intake manifold on the back.there is a valve there

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1 Answer

Engine stalls out when put into reverse.

Sounds like you may have a faulty cigarette lighter circuit. Bypass the lighter terminal. Or better yet, use one of those bic lighters or a match. Good luck.

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2 Answers

Engine will not idle, stalls at stop lights etc - EGR code

To me if the engine will not idel and stall once you have stopped, that points to an IAC (Idle Air Control sensor) which is located on your throttle body.  The part is very easy to get to and changes out pretty quickly.  Hope this helps.  Thanks for an honest rating and for using FixYa!

May 20, 2009 | 1999 Isuzu Rodeo

1 Answer

High jdle after warm up on 98 chevy k1500 4.3l v6

egr vlve itself will cause rough idling ,stalling,stumbles during accelaration,iwould take it off clean valve ports of carbon deposits,put it back on and see,egrs are exp.enough,and like ccn7 said sounds like tps problem,but usually they give a code

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2 Answers

Vehicle Stalls

is it setting any codes?
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