EGR Valve
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EGR Valve
Hi everyone!
Glad I found this site. Im the owner of a 97 ford ranger and my dad has a 96 explorer. We both have a 6 cylinder 4.0L engine in them and both have our check engine lights on. We read the codes and they both have EGR problems. I was about to try to replace the valve but the flarenut on the line doesn't want to budge. Ive seen suggestions about trying to unscrew it when the line is hot - might try that or heating it up - but I wondered what size that flarenut is. I'm sure if I got a crows foot or a line wrench the right size it would help. I'm guessing it's metric - around 25mm because the biggest wrench I have - 1 inch doesn't fit on it does anyone know the best tool for he job?
Thanks for any good advise ...
Aeroin
Glad I found this site. Im the owner of a 97 ford ranger and my dad has a 96 explorer. We both have a 6 cylinder 4.0L engine in them and both have our check engine lights on. We read the codes and they both have EGR problems. I was about to try to replace the valve but the flarenut on the line doesn't want to budge. Ive seen suggestions about trying to unscrew it when the line is hot - might try that or heating it up - but I wondered what size that flarenut is. I'm sure if I got a crows foot or a line wrench the right size it would help. I'm guessing it's metric - around 25mm because the biggest wrench I have - 1 inch doesn't fit on it does anyone know the best tool for he job?
Thanks for any good advise ...
Aeroin
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Joined: Sep 2008
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Check Engine Codes
Hey!
Thanks for trying to help me out - I've read most of the threads about EGR valve trouble and every time you ask, "what were the codes?"... I'm sure everyone like me remembers they have an EGR issue and forgets the codes altogether. Nobody you try to help ever answers you! I figured I'd do something nobody else has and go get you the codes to see what you have to say! I had to go barrow a code reader again to get em - and here they are....
P0401 EGR Flow Insufficient
and
P0171 System Too Lean
So what do I do next?
Thanks again for any assistance.
Aeroin
Thanks for trying to help me out - I've read most of the threads about EGR valve trouble and every time you ask, "what were the codes?"... I'm sure everyone like me remembers they have an EGR issue and forgets the codes altogether. Nobody you try to help ever answers you! I figured I'd do something nobody else has and go get you the codes to see what you have to say! I had to go barrow a code reader again to get em - and here they are....
P0401 EGR Flow Insufficient
and
P0171 System Too Lean
So what do I do next?
Thanks again for any assistance.
Aeroin
New User
Joined: Feb 2008
Posts: 7
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go buy a egr gasket and make yourself a plate to plug it, you will get more power as well as better fuel economy. Some body in there infinate wisdon thought adding exhaust into the intake would better the emmissions, yah but at the cost of fuel economy.
Post Fiend
Joined: Jan 2003
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From: Connecticut
Logistics Pro
Joined: Jan 2002
Posts: 4,907
Likes: 39
From: suburban atlanta
EGR has been used for at least 35 years. It may hurt or help gas mileage, depending upon a mixture of things. Compression ratio, combustion chamber design, quench areas, and the list goes on. To flatly say that it hurts mileage and reduces power is a possible overstatement.
The engineers that designed these systems had more education and equipment than I'll see in my lifetime. If they don't know what they are doing, then perhaps we should all go buy horses. But then again, there is a slight pollution problem that we always see after parades...
tom
The engineers that designed these systems had more education and equipment than I'll see in my lifetime. If they don't know what they are doing, then perhaps we should all go buy horses. But then again, there is a slight pollution problem that we always see after parades...
tom
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