my check engine light is on i put it on the computer and it told me that i had an egr problem bought a new egr valve and installed it. light went out for about an hour and it came back on put it back on computer and it showed that i still had an egr problem. had new egr checked and it is working fine. ralso replaced line to valve thought it my have been leaking no not the problem. is there another egr sensor on my truck and if so where can it be located. i have a 2001 ranger with a 4.0 sohc motor any advice will be greatly appreciated. I AM NEW TO THE SITE PLEASE HELP ANYONE

 

Check the lines to the egr and the "block" think that the line goes to. Its called the DFPT or something like that

 

thanks but i already replaced the vacum line . the local wanna be mechanics at autozone said that there might be an electronic selenoid control on the motor. is that the control that the egr valve vavum goes to? and if so could that be a part of the problem. the engine runs fine except for a decrease in fuel mileage

 

As egr flow deteriates so does mileage. I don't know much about the sensor.. but I'd check into that as well.

Also, I'm pretty sure it not a problem but.. make sure the passage from where the EGR mounts to the intake air passage is not plugged. On my 4.0L it's very short and I don't think it would ever get plugged. But.. I've seen this happen on MANY other engines.

Rich