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EGR Valve

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  #1  
Old 02-28-2006
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EGR Valve

The Check Engine Light came on while i was on the freeway the other day. I went to checkers to have one of those free OBD-II Scans. It said the EGR system has insufficient flow and is giving error codes to the ECU. I also noticed the sound of the low end of the RPM range has lost its "grunt". Has anyone had this happen? Or any suggestion on how to fix it?



- 2000 XLT 3.0
 
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Old 03-01-2006
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i had to go and get my EGR valves replace. it was like $720 to get it fixed.
 
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Old 03-01-2006
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720$!!!!

I'll replace it for a free meal.
 
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Old 03-01-2006
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Originally Posted by Ranger808
The Check Engine Light came on while i was on the freeway the other day. I went to checkers to have one of those free OBD-II Scans. It said the EGR system has insufficient flow and is giving error codes to the ECU.
It could be a few different things but the odds are 99% that it is a bad Differential Pressure Feedback EGR sensor, the sensor that measures the EGR flow rate. The DPFE sensors were very unreliable around 2000~2001 and most end up getting replaced. Check your dealer because these are sometimes cheaper there than at an auto parts store. Approximate price for the part is $40~60 and they are not difficult to change.
 
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Old 03-01-2006
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I have a 2004 Ford Ranger 3.0, and just installed a K & N intake, and my OBD -11 scan said my system was too lean on bank 1 and bank 2. The guy that scanned it for me said it is probally my EGR valve, but he also said it could be my mass air flow sensor since I did install a new intake, that the sudden increase in airflow could be causing it to say too lean. Does anybody have any idea what it could be?
 
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Old 03-01-2006
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Originally Posted by PrudensRanger
I have a 2004 Ford Ranger 3.0, and just installed a K & N intake, and my OBD -11 scan said my system was too lean on bank 1 and bank 2. The guy that scanned it for me said it is probally my EGR valve, but he also said it could be my mass air flow sensor since I did install a new intake, that the sudden increase in airflow could be causing it to say too lean. Does anybody have any idea what it could be?
I don't buy the EGR idea or the BS notion that you have more airflow with the filter. The airflow to the engine is limited by the throttle valve and those codes are for part throttle operation only.

It sounds like you have either created a vacuum leak during the installation or contaminated the MAF sensor with filter oil.
 
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Old 03-01-2006
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Any idea on how to clean my MAF sensor or find my vaccum leak? I have this roud plastic thing kind of below my air filter, i think its some sort of vacuum, one of the bolts had fell off it and it was just barely hanging there, but I don't think there was anything wrong with it. I just wish i could find out what the problem is, cause I don't want to have to take it somewhere and pay for it.
 
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Old 03-02-2006
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Check the fresh air vent going from the intake tube to the valve cover, It's probably not on the fitting all the way and air is bypassing the MAF so the engine is getting un-metered air into the intake and is running "lean" since it has more air in the engine than it thinks.
 
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Old 03-02-2006
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I had the same code on my 99 3.0
I had to change the egr
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Old 03-02-2006
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Well it is not the tube going to the valve cover, and I took the MAS out and cleaned it, and the light was off for a little while, then came back on. It looks like I'm going to have to get the EGR valve checked out.
 
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Old 03-13-2006
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I have the same problem, the other day my check engine light came on, went to AutoZone for the free computer check and it gave me the same thing, EGR lean or something. The guy there said he had a ranger and heard of the same problem before, he said to replace it, or clean it. It happened 2 weeks ago for me and i cleared the light with the ecu checker thing, but the light came back on the other day. So, I guess i'm going to have to clean it and see if it helps.
 
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Old 04-05-2006
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I had this problem and it drove me nuts. The first mod I bought for my truck was a K&N Aircharger, and I had the same exact problem with the lean code. Its not the EGR because my truck was three weeks old when I had this problem and it wouldnt be that valve. Let me tell you dont even bother, I cleaned the maf and re-installed the damn thing maybe three or four times. Nothing helped me and I eventually sold my intake and replaced with the K&N drop-in filter w/ an air box mod. My suggestion is this: try using 91 octane fuel, this was my idea after I had sold the intake. If your engine is detonating due to a lean mixture, the slower combustion of the premium fuel may even it out. Just A suggestion, I'd be curious to see if it worked.
 
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Old 04-05-2006
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cleaning

how are you sposed to clean the EGR things?
 
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Old 04-06-2006
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Originally Posted by Ranger808
how are you sposed to clean the EGR things?
Not exactly sure, I used throttle body cleaner, it evaporates quickly and I figure throttle body cleaner won't eat away any seals.
I took the EGR off of the truck to do it and sprayed in both sides. I'm not sure if it would possibly help or how to clean it, that's just what I did. I can't find anything about how to clean it so I used my knowledge.
 
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