Egr
 

My check engine light came on last week so I ran the codes.

P1408- EGR flow out of range

My old man is trying to get a new one for me.

He found one with a different part # and im not sure if it will work.

Does anyone know if a different EGR will work on my truck? The new one came off a 3.0 liter (same as mine) but im not sure what kinda engine it was from.

Anyone know if it will work or has anyone had this problem with their ranger?

hmmm i dont know i dont have a egr on my ranger :shrug: but i think it would work if its from another 3.0 of the same type ie. vulcan or duratech

I donno what car it came from. Pretty sure its not a ranger, dont even know if its a ford.

Dont have an EGR on yours? (Exhaust Gas Recirculation)
I thought every engine has one.

Not every engine has EGR. The EGR system caused so much warranty expense that Ford has been able to eliminate it on some years/engines and then just calibrate around it.

And not every EGR code means that you have a bad EGR valve. The most unreliable part of the EGR system is the DPFE (Differential Pressure Feedback EGR) sensor that senses exhaust gas flow for the EGR. For every EGR valve that fails, dozens of DPFE's fail.

That doesn't mean that your problem must be the DPFE but the odds are that it is.

Well my dad brought home something, i think it is a sensor (not positive) but this is what it looked like.

http://www.kemparts.com/TechTalk/149-112.jpg

I changed it today but i have to go to my cousins house to get his star tester to clear the codes.
I hope it will be fixed.

That's a DPFE - could very well be your problem

Well i changed it and cleared the codes. Drove about 20 miles so far and the check engine light is still off. Must be it. (knock on wood- dont wanna jinx it.)

Before, i have been only getting about 13 miles per gallon. Not very good. Do you think the EGR will help change that?

When the EGR is active, the engine has a couple of degrees more spark tolerance. So there is a special spark table used when the EGR is flowing. I am guessing that the EGR is disabled when the Check Engine light is on. so maybe you haven't been getting the full advance. This extra spark advance with the EGR on should give a SLIGHT fuel economy improvement but I wouldn't count on a lot.

I guess ill c how much it helps. The sensor must have been the problem cause now my engine is running fine with no check engine light on.

when i changed the egr valve on my blazer the mpg went from around 15 to nearly 20