EGR Valve


Asked by Jul 30, 2011 at 03:39 PM about the Ford E-150

Question type: Maintenance & Repair

1999 E-150 5.4L engine. want to clean or change EGR what size nuts are on this and what size is the large one. I see two holding it and then a pipe with a large nut I belive over an inch but not sure

10 Answers

first question,why or what makes you think the egr needs cleaning or replaced.

5 out of 5 people think this is helpful.

I am pulling up a code P0401 and have already replaced the EGR sensor and still running bad

3 out of 3 people think this is helpful.

if the egr has been replaced,it should be ok,try changing the fuel filter,run a good fuel injector cleaner in a tank of gas,sea fome or lucas is best.when you replaced the egr did you clear the coad,unhook battery for 10 min,it will reset the computer ,clear out the may also want to clean the IAC,Idle Air Control,with carb cleaner,is on TB,is round plugin at bottom,also spray the inside of TB clean it out.


I cleaned theMAF and IAC and it does runs better but when you stop it idles bad and some time will just stall while sitting. Thinking if I should just bite the bullet and buy a new MAF sensor (already cleaned it twice) or buy a new IAC or both What say you which one first or both

1 out of 1 people think this is helpful.

Neither yet,have the cat converter checked to see if stoped up.& have the DIS modgel a gray looking box type ,should be located on top of ac,or on dist.


cat converter ok really thinking my main problem is EGR valve I unpluged the MAF sensor and drove it it seemed to be about the same. Have already replaced EGR sensor. think next step is new egr and clean ports, not saying the MAP will need to be replaced later. But right now everything ponts to EGR valve

all the egr really affects is idle.


went for a test drive tonight. it ran ok when it got up to about 55 mph and started to chug a little bit let up on gas then push on gas ran a little smoother you just can't push on gas hard and expect it to take off like it use to. talked to a mechanic on way home he said he never has any good luck cleaning MAF said just replace it

Im still not sure the MAF is the problem,sounds more like dirty injectors,this gas or crap we buy with the ethonol in it,not good,still I would fill up with 89 or 93 oct run a bottle of sea fome in a tank of gas.will clean injectors,replace fuel filter also.


Need to check the riser pipe from the manifold to EGR valve It's possibly cracked or broke.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions


Looking for a Used E-150 in your area?

CarGurus has 163 nationwide E-150 listings starting at $3,650.


Search Ford E-150 Questions

Ford E-150 Experts

#1 FordNut
Reputation 630
#2 Tracy Hooks
Tracy Hooks
Reputation 490
#3 kbro
Reputation 420
View All

Related Models For Sale

Used Ford F-150
2,880 Great Deals out of 212,656 listings starting at $1,000
Used Ford E-Series Cargo
98 Great Deals out of 3,139 listings starting at $1,995
Used Chevrolet Silverado 1500
2,304 Great Deals out of 156,238 listings starting at $1,395
Used Ford E-Series Wagon
43 Great Deals out of 1,752 listings starting at $1,500
Used Ford E-350
228 listings starting at $495
Used Dodge Ram 1500
536 Great Deals out of 12,998 listings starting at $2,199
Used Chevrolet Express Cargo
84 Great Deals out of 14,123 listings starting at $2,250
Used Ford F-250 Super Duty
428 Great Deals out of 45,049 listings starting at $2,000
Used GMC Sierra 1500
927 Great Deals out of 62,271 listings starting at $1,395
Used Ford F-250
520 listings starting at $3,500
Used Toyota Tundra
623 Great Deals out of 30,696 listings starting at $2,637
Used Ford F-100
172 listings
Used Chevrolet Express
138 Great Deals out of 5,995 listings starting at $2,499
Used Toyota Tacoma
620 Great Deals out of 35,082 listings starting at $2,155
Used Ford F-150 SVT Lightning
7 Great Deals out of 139 listings starting at $7,900