All times are UTC - 6 hours [ DST ]




Ask A Question Reply   
Author Message
 
My 1998 Grand Marquis misfires and stumbles all the time. The code P0401 that it throws indicates that it is EGR problem. The airway from the air filter to the plentum has been thoroughly cleaned, the EGR valve and solenoid have been replaced the computer reset and after about 50 miles the Check Engine Light comes back on.

Can anyone give me a suggestion?


   
Reply with quote  
* Search   
 
Sounds like the passage in the intake is plugged with carbon, or the catalytic converter is plugged. This could be because of the engine misfiring all the time, or it may be the cause of the misfire- expecially if it has no power under heavy acceleration. Ignition coils are common failure to cause misfire on this Ford engine.


   
Reply with quote  
 
User avatar

contributions: 319
Images: 4
The ignition coils were common to fail on these, but also when this Ford engine gets a lot of miles on it, the EGR passage in the intake manifold would get full of carbon and cause that code.

Only way to fix it was to remove the intake manifold and clean it out. But that was only temporary as the engine burning oil will plug them up again.
_______________

Be sure to check the Similar questions down this page for more help.


   
Reply with quote  
Ask A Question Reply   

   Similar Topics   Author   Replies   Views   Most Recent 
New Articles View the first 1986 Mercury Grand Marquis keeps stalling, HELP!

[ Go to page: 1, 2 ]

in Ford Cars

NCline

16

5660

Wed May 25, 2016 10:51 am

carriedi View the latest

New Articles View the first Intake manifold cracked Mercury Grand Marquis

in Ford Trucks

Larry22

1

3062

Sat Apr 20, 2013 1:40 pm

carriedi View the latest

New Articles View the first 2003 Ford Windstar Misfires Under Load

in Ford Trucks

davlor2

1

2089

Thu Jan 30, 2014 6:00 pm

carriedi View the latest

New Articles View the first 1998 Ford Ranger has NO SIGNALS

in Ford Trucks

bigfoot102458

1

2097

Sun Nov 03, 2013 7:19 pm

carriedi View the latest

New Articles View the first 1998 ford windstar vibration

in Ford Trucks

Taly

2

1511

Wed Feb 13, 2013 7:12 am

aron View the latest

New Articles View the first 1998 ford expedition wont crank

in Ford Trucks

sandwich

5

2850

Thu Jul 03, 2014 9:43 pm

carriedi View the latest

New Articles View the first transmission gear problem- 1998 ford mustang

in Ford Cars

jessdawn84

1

2274

Fri May 17, 2013 9:04 pm

ProTech View the latest


All times are UTC - 6 hours [ DST ]



Search for:
Jump to:  
Contact Us