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Second Generation Legend (1991-1995)

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Old 10-17-07, 07:53 AM   #1 (permalink)
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EGR valve cleaning

Here is my new issue.. When I'm on the freeway if I'm going about 55 mph and take my foot off the gas, the speed drops very noticeably. The mechanic said that my EGR system needed to be cleaned. He put some type of connector on to the EGR valve and said the readings showed that it was the EGR system. Is there anything that I can buy to clean the EGR system? Like maybe something to pour in the gas tank or something? Any suggestions as to what I can do? Have any of you experienced this problem?
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Old 10-17-07, 09:48 AM   #2 (permalink)
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take off your egr pipe and clean the gunk out of it. look in the g2 section and do a search. you'll find directions, but all i can say is it's prolly a clogged egr pipe.
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Old 10-17-07, 09:58 AM   #3 (permalink)
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A few months ago on the TV show MotorWeek the guy was demonstrating a process that could be done at a garage where they had a device that introduced some kind of solvent that was supposed to clean out the EGR system. I searched the MotorWeek website & other places on the web & was not able to find any other reference. Seems like if there really was this type of process, it would save a lot of labor. People on this forum have described removing the EGR pipe for cleaning & it sounds like a real bear.
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Old 10-17-07, 11:12 AM   #4 (permalink)
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It is a pain. It connects near the bottom of the intake manifold. You'll need some ratcheting wrenches to save your sanity. To give you an idea,
Project I, Type I to Type II intake mani.: complete
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Old 11-30-07, 01:08 AM   #5 (permalink)
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Does cleaning the EGR valve improve fuel economy? My car has the same condition as the OP Thanks
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Old 11-30-07, 02:00 AM   #6 (permalink)
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Old 11-30-07, 07:45 AM   #7 (permalink)
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http://www.bgprod.com/products/fuelair.html#9240

BG makes an EGR service tool

http://www.mpt.org/motorweek/goss/2633.shtml
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Old 11-30-07, 10:40 AM   #8 (permalink)
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^Good find. Now the trick would be to find somebody local that did that. Got any suggestions, B?
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Old 11-30-07, 11:37 AM   #9 (permalink)
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I tried searching "EGR Cleaning Service Denver" & didn't find anything. I looked at the MotorWeek website & they recommend having your EGR system power cleaned every 30k miles but they don't give any hints on where to find this service.

If someone could find the service for a reasonable price, it sounds like it would be a lot less painful than removing the EGR pipe. However, it is hard to imagine a device that would clear out an EGR system that was completely blocked - how would the chemical start to flow to begin to dissolve the gunk?
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Old 11-30-07, 04:42 PM   #10 (permalink)
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i have to wonder, wouldnt letting the egr clog itself up naturally be the same adding one of those 'egr block plates' a few people on here use? its pretty much the same effect haha
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Old 11-30-07, 05:02 PM   #11 (permalink)
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Quote:
Originally Posted by oldacura View Post
A few months ago on the TV show MotorWeek the guy was demonstrating a process that could be done at a garage where they had a device that introduced some kind of solvent that was supposed to clean out the EGR system. I searched the MotorWeek website & other places on the web & was not able to find any other reference. Seems like if there really was this type of process, it would save a lot of labor. People on this forum have described removing the EGR pipe for cleaning & it sounds like a real bear.
This sounds like a fuel system cleaning. If so, I had this done about 2 years ago at my buddys shop. Basically, they unplug the lines to the fuel pump and connect an attachment that pumps an extremely concentrated fuel cleaner thru the entire fuel system, removing a large majority of the deposits in the system. This would include the EGR if I'm not mistaken. The difference is immediate and very noticeable. I highly reccomend it to everyone.

Those fuel system additives they sell at autopart stores are so weak they really dont do much to clean out deposit buildup. Your better off saving your money for this job instead. I dont know how much it costs cuz my buddy only charged me his cost of the cleaner, which was about $40 for a small bottle. I believe it may run for $130+, of course this will vary depending on where you live. I think they reccomend you do it at least once every 8 years. I personally plan to do this every 4 years or so to keep my ride running smoothly.
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Old 11-30-07, 05:40 PM   #12 (permalink)
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I don't see how fuel system cleaning could clean out your EGR. Basically, the EGR is a pipe & valve that bleeds some exhaust gas from your exhaust system & introduces it back into your intake manifold - upstream of the injectors.

It really isn't connected to the fuel system at all.
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Old 11-30-07, 10:28 PM   #13 (permalink)
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Curious if the egr valve affects fuel economy. Anyone?
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Old 12-01-07, 12:31 AM   #14 (permalink)
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Quote:
Originally Posted by stevieray View Post
^Good find. Now the trick would be to find somebody local that did that. Got any suggestions, B?
yup

http://www.bgfindashop.com/locator/index.php
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Old 12-01-07, 09:04 AM   #15 (permalink)
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Quote:
Originally Posted by 95typeII View Post
This sounds like a fuel system cleaning. If so, I had this done about 2 years ago at my buddys shop. Basically, they unplug the lines to the fuel pump and connect an attachment that pumps an extremely concentrated fuel cleaner thru the entire fuel system, removing a large majority of the deposits in the system. This would include the EGR if I'm not mistaken. The difference is immediate and very noticeable. I highly reccomend it to everyone.

Those fuel system additives they sell at autopart stores are so weak they really dont do much to clean out deposit buildup. Your better off saving your money for this job instead. I dont know how much it costs cuz my buddy only charged me his cost of the cleaner, which was about $40 for a small bottle. I believe it may run for $130+, of course this will vary depending on where you live. I think they reccomend you do it at least once every 8 years. I personally plan to do this every 4 years or so to keep my ride running smoothly.

what do u call this process?


Quote:
Originally Posted by MXHalofan View Post
Curious if the egr valve affects fuel economy. Anyone?
so i heard i need to find out myself somehow
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