0
Do you need to replace the EGR on your 2000 Mercurn Mountaineer 5.0 if you are getting a p0401 egr flow efficient code?
Wiki User
∙ 12y ago
Possibly, but not necessarily. IT may be a dpfi valve that is plugged, a piece of carbon caught in the EGR valve, carbon build up elsehere preventing circulation. Take it to a independent garage that specializes in troubleshooting of this nature.
Answeri was getting a p0401 and a p0402. Follow the steps for cleaning below:The EGR on the 97 merc is on the back left side on the intake near the firewall. I have had sucess with cleaning out the throttle body and pathway to the erg for clearing the MIL or check engine light for odb codes related to excessive and inexcessive flow rates in the egr. Open the hood and locate the air box for the air filter. Connected to this is a large semi flex tube with a clamp at each end. One at the air box and one at the throttle body. Just remove the clamps and push open the butterfly valve and spray out the insides with carb cleaner. Note, if you have low miles, under 100k, I would not recommend this, because they seal them with a coating and you may cause further problems. However, if you are like me you will have over 100k. I have 127k on mine. Don't start the vehicle right after this. Spray it out several times and and let if dry out. You can prop a screwdriver in the spring just to the right of the TB valve. It is tight to try to remove the egr in your driveway. One of the two screws is ok to remove and the other is very difficult with standard tools. If you wish to see what the egr looks like check out autozone or parts America web sites and search for egr and I know at least one of them has a picture of one.Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
How do you replace vehicle speed sensor on Mercury Mountaineer?
where is the speed sensor on 2002 mercury mountaineer
How to replace spark plugs on Mercury Mountaineer?
how to change spark plugs on a 97 mercury mountaineer
How do you replace the air brakes on a 2000 Mercury Mountaineer?
The Mercury Mountaineer has hydraulic brakes, not air brakes.
What should you do to fix the horn on your 1997 Mercury Mountaineer?
replace it.
How much is the labour to replace rear brake pads on a Mercury Mountaineer?
In CT USA, a garage would charge 1 hour labor to replace the rear brake pads on that Mountaineer.
How do you replace battery cables 1999 mercury mountaineer?
To replace the battery cables on a 1999 Mercury Mountaineer, loosen the connectors at the terminals. After this, remove the other end of the cables and install new ones.
How do you replace the fuel filter on a 1999 Mercury Mountaineer?
take it off
Can you replace just the bulb on a headlight of a 1998 Mercury Mountaineer?
Yes , according to the 1998 Mercury Mountaineer Owner Guide : ( the headlight bulb is # 9007 )
How do you replace the AC Clutch on 1997 Mercury Mountaineer 5.0L?
Use a hammer
How do replace the dashboard lights on a 1999 Mercury Mountaineer?
instrument panel or controls?
How do you replace turn signal flasher and where is it located?
What kind of car 1999 mercury mountaineer
Why is the theft light blinking on my 2002 Mercury Mountaineer and it will not crank?
had to replace the battery in my 2002 Mercury Mountaineer but now the theft light is blinking, it is cranking up. How can I stop it?
