egr
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Joined: Nov 2002
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From: southwest PA
egr
96 F-150 4x4 / 300-6 with a little over 100,000 miles. Check engine light off & on, went to Autozone, code said EGR valve is stuck open. How hard is this to replace? Is it easy enough for a do-it yourselfer? What else do I need to know if I change this my self? Fuel economy is lousy,lack of power and truck starting to stutter, will the EGR cause this problem.
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Joined: Jan 2001
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The EGR is right behind the alternator and is attached to the intake manifold with 2 bolts and has a pipe coming out of the bottom of it. To block it off, remove the 2 bolts and pull the EGR back from the manifold. Use the gasket as a template for the block off plate. Be sure to use substantial metal for the plate, not beer can or aluminum as they will burn through in no time.
Lead Driver
Joined: Sep 2002
Posts: 9,551
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From: North Texas
Originally posted by 96black4x4
This may sound a little dumb. but what is the purpose of blocking this off? shouldn't the valve be replaced.
This may sound a little dumb. but what is the purpose of blocking this off? shouldn't the valve be replaced.
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
Blocking it off can fix problems with bad idle and such.
All that the valve does is controll exhaust comming back into the engine to mix with the air.
In my opinion, putting bad air into the chamber would create a worse reaction with the Fuel/Air mixture.
So when you block it off, it stops the return of this which can cause rough idle's to stop and slugish accelleration and such.
All that the valve does is controll exhaust comming back into the engine to mix with the air.
In my opinion, putting bad air into the chamber would create a worse reaction with the Fuel/Air mixture.
So when you block it off, it stops the return of this which can cause rough idle's to stop and slugish accelleration and such.
Lead Driver
Joined: Sep 2002
Posts: 9,551
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From: North Texas
Originally posted by Talyn
Blocking it off can fix problems with bad idle and such.
All that the valve does is controll exhaust comming back into the engine to mix with the air.
In my opinion, putting bad air into the chamber would create a worse reaction with the Fuel/Air mixture.
So when you block it off, it stops the return of this which can cause rough idle's to stop and slugish accelleration and such.
Blocking it off can fix problems with bad idle and such.
All that the valve does is controll exhaust comming back into the engine to mix with the air.
In my opinion, putting bad air into the chamber would create a worse reaction with the Fuel/Air mixture.
So when you block it off, it stops the return of this which can cause rough idle's to stop and slugish accelleration and such.
I am going to make a limiting plate by years end for my truck. Like the gasket that goes betwen them well I am going to simply make a piece similar to the block off plate but with a smaller hole going into the intake...around 3/16" or so I what I will do. Should keep the advantages of EGR, but none of its drawbacks.
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Joined: Jan 2001
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Sorry I was not paying attention. You have an inline six and I was thinking V8. Oh well, nobody died, anyway, blocking the EGR off eliminates some drivability problems such as a miss I had when climbing hills. Apparantly dumping exhaust back into the intake upset the engine a bit and it responded by loosing power. From what I have read over the years in these forums I understand that the I-six likes a small amount of exhaust gas as opposed to being blocked completely off. A small hole, maybe 1/16th inch or so should do. The only problem I see here is that the material yo use shouold be fairly thick or the hole will eventually enlarge itself from gas flow. I originally used stainless steel shim stock that was slightly thicker than a tin can and blocked my V8 right off. A year later the symptoms re-appeared and I removed the plate to find that the exhaust has blown a hole right through plate. I replaced it with much thicker material, approximately.075 in. and all is well now.
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Hotshot
Joined: Oct 2003
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From: Ashland City, TN
Should be no negative results.
I'm geussing i need to make a plate like the gasket, and just put it in where the gasket would go and a gasket on both sides of the plate?
Do i need longer bolts?
I'm geussing i need to make a plate like the gasket, and just put it in where the gasket would go and a gasket on both sides of the plate?
Do i need longer bolts?
Senior User
Joined: Jan 2001
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The bolts are long enough as long as you use plate material that is under 1/16th inch. I didn't drill holes either, I just cut across from the sides and up from the bottom of the plate so it is a drop in fix. If you make it with a tab at the top you can remove it by just loosening the bolts which is good it you are going to take it in for certification or trouble shooting. I have had no ill effects from doing this but the drivability has greatly improved, especially when going up hill.
Junior User
Joined: Mar 2002
Posts: 84
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From: Grafton USA
I have a 1989 F-150 w/ the big six and it has a miss at a constant speed... It started this after I put a new EGR valve on there.. would making that rescritor plate solve my problems if soo how big of hole doo I need to drill to make it all better.. I would like to have no more miss it really ticks me off.. any suggestions.. also some said there is a post on this site somewhere of some giving detailed instructions on how too make one.. I haven't been able to find, can someone please point me into the right direction.. Thank ya'll
Andrew
Andrew
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Joined: Mar 2002
Posts: 84
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From: Grafton USA
Well I think I solved the dilema (sp?) w/ the EGR.. I went and talked to friend of mine who works at the ford dealership around home he said take a BB and put in the GREEN wire that attaches to the EGR and shove back on the EGR and don't worry about it..But if you want too make a plate use a 1/4" hole.. just thought I would pass the word along
Andrew
Andrew
