1996 EGR Valve 5.0L

[chuck1022]

Ok...went out and started to try and fix this damn CEL p0401.

I disconnect and inspected the hoses from the egr solenoid and started the car. The bottom shorter connection was making a hissing noise. When I put my finger over it, > felt a slight vacuum.

Then I pulled a vacuum directly to the egr.......nothing was happening then I heard a loud pop and the diaphragm moved. Could it of been stuck?. After that I repeatedly pulled a vacuum...the diaphram moved and the rpms dropped.

Now I am gonna run it and see if the CEL comes on

 

[410Fortune]

If it is sticking once it will stick again
Good diagnostics work thus far!!

 

[C420sailor]

They carbon up and start sticking

 

[chuck1022]

They carbon up and start sticking

Anyway to clean it without taking it off

 

[chuck1022]

If it is sticking once it will stick again
Good diagnostics work thus far!!

YOU ABSOLUTELY JINXED ME. I started it up and drove it and my CEL came on. P0401. I am gonna unstick it with my vacuum pump and see if that works.


DAMNIT!!!!!!!!

 

[donalds]

Use carb cleaner. Its great at carbon buildup
Use the vac pump to open and close it while cleaning

Hope this helps

 

[410Fortune]

Just replace the valve?

 

[chuck1022]

Just replace the valve?

Yes

I have one

But that bottom nut is tough with my fat hands!!!!!!!

 

[410Fortune]

Use a 3-4” long extension?