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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

smog pump delete

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  #16  
Old 08-20-2003, 08:37 AM
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MrCarlsonq MrCarlsonq is offline
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smog pump delete

But, the whenever the EGR comes on, the ECM is in closed loop, so it is controling the mixture based on the O2 senser. If the EGR doesn't open, and it goes lean, it will immediately adjust because the O2 sensor says it is lean.

With my mustangs, I have removed or disconnected the EGRs on all of them, and have no lean issues. I have dyno'ed one of them with a wide band O2 hooked up, and would have noticed it lean out when warming up the car before the run (constant low throttle warmup).
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  #17  
Old 08-20-2003, 10:37 AM
fishin1976 fishin1976 is offline
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smog pump delete

To avoid the CEL from removing the EGR, mount your EGR valve on the fender well and run the wiring and the vacuum to it. The computer does not know if it is flowing exhaust gas or not, just if its plugged in. Like stated above, the O2 sensor will compensate for a lean or rich condition. That is an afterthought of introducing exhaust gases in the combustion chamber.

If you want the egr system gone completely, you will have to put up with the CEL or disconnect the bulb.
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  #18  
Old 08-20-2003, 11:02 AM
c_rossman c_rossman is offline
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smog pump delete

You are better off removing the vacuum line and sticking a bolt in it, Then the ECM thinks the vavle is closed and wont adjust timing and mixture. I have had bad pinging and drivabiltity because of this
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  #19  
Old 03-05-2007, 08:00 PM
mechman40 mechman40 is offline
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95 f-350 460

Quote:
Originally Posted by MrCarlsonq
But, the whenever the EGR comes on, the ECM is in closed loop, so it is controling the mixture based on the O2 senser. If the EGR doesn't open, and it goes lean, it will immediately adjust because the O2 sensor says it is lean.

With my mustangs, I have removed or disconnected the EGRs on all of them, and have no lean issues. I have dyno'ed one of them with a wide band O2 hooked up, and would have noticed it lean out when warming up the car before the run (constant low throttle warmup).
Did you have any luck with the truck? I have a 95 f-350 460 EFI , I'm in the process of installing a reman. mrt. and would like to remove as much of the smog ( airpump, egr, etc. etc.}with out effecting the proformance. Thanks for your time.
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  #20  
Old 03-05-2007, 08:16 PM
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BigJim191 BigJim191 is offline
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It's too bad i couldn't remove my smog stuff and cats too...but up here in Canada we have emission tests every other year...and i have another 7 years to wait
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  #21  
Old 03-05-2007, 10:59 PM
Trickedout420 Trickedout420 is offline
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or you can just buy this kit to properly get rid of your EGR

http://rjminjectiontech.com/?p=9
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  #22  
Old 03-06-2007, 08:19 PM
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Thank you Trickedout420 for the link...i could use the eliminator until test time...remove it for the test then reinstall after.

Jim
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  #23  
Old 03-07-2007, 12:00 AM
buffalobob buffalobob is offline
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how about that black plastic small car battery sized thing on the passenger side inner fender....with the vacuum lines going in - out of it?.....what is that thing????....and can I just plug all the lines and be OK?...the previous owner took off the cat and the air pump is pumping to atmosphere. Its a 7.5 liter...but the small blocks have this clutter too.
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  #24  
Old 03-07-2007, 01:26 AM
Jrock909 Jrock909 is offline
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In fact guys you can bypass all of the emissions solenoids also by using 75ohm-10 watt resistors on each of the solenoids...
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  #25  
Old 03-07-2007, 10:24 AM
jk89cat jk89cat is offline
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that is the proper way to do it , if you leave it where the cel is on you will have driveabilty issues due to the computer being in limp mode . so you have to have the bypass connector deals like above or you need to have a tune that turns off the functions inside the pcm . great link btw trickedout420
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  #26  
Old 03-07-2007, 11:21 AM
nastruk95 nastruk95 is offline
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The thing on the passenger side is probably the carbon canister your looking at. It takes gas fumes and burns off the fumes instead of releasing them into the atmosphere.
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  #27  
Old 03-08-2007, 12:01 AM
buffalobob buffalobob is offline
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Jrock....whats that about the resistors?????...can you fill in some details on that?...I dont have a clue what that means and need to do something w/ this 94 460...thanks
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  #28  
Old 03-08-2007, 08:47 AM
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i thought about doing the resistor trick too but i wasnt sure if it would work. what about on a 96 f150 with a 302. for like the knock sensor and the dpfe sensor and stuff lik that
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  #29  
Old 03-08-2007, 09:06 AM
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Why do you want to eliminate the knock sensor? 96 is going to be more tricky in all respects since it is OBD-II and it monitors everything a lot closer.
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  #30  
Old 03-08-2007, 10:16 AM
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Sounds like this is a pretty popular issue, Maybe a few of our members with expereince should write an article about it.

That way we have something to point new users too when they ask.

This is something i'm interested in also. Haveing issues with mine being all cut up, and my truck not performing the way it should due to the previous owners stupidity.
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