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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

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  #31  
Old 03-08-2007, 02:09 PM
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im pretty sure its my knock sensor that is retarding my timing and making ny truck lose horsepower because when i take off in first and get going and the shift it into second its lame but when the rpms hit 2000 and up it will put you back in the seat. you can actually feel it and i dont know why its doing that
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  #32  
Old 03-09-2007, 07:44 AM
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That's just the 302's powerband. My truck is the same way, starts to make decent power above 2000 rpm. You can unplug it if you want, just to see if there is any difference, but I don't think there is any way to just bypass it entirely (probably not a good idea either if it still works and is keeping the engine from pinging).
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  #33  
Old 01-18-2010, 05:29 PM
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does anyone know what size belt i need for a 91 300 I6 if i take the smog pump off?
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  #34  
Old 03-21-2010, 09:55 PM
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Good thread, I've got an 88 F250 460, I'm doing research in order to remove all the smog crap, I've already made my cat "Free Flow" I'm in the process of getting all the air lines disconnected from the manifolds, after that all the other hoses and egr is coming off..
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  #35  
Old 03-21-2010, 10:05 PM
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sounds good keep me poasted!!!
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  #36  
Old 07-28-2010, 05:47 PM
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Well I removed all the smog crap from my 460, I gained about 2mpg.. I still need to measure and get the correct size belt so I can remove the smog pump, there's nothing hooked to it but I'd like to remove it... Does anyone have a part # for the correct size belt??? The truck runs great...
Also I removed the EGR and as suggested in post # 21 I installed the Original EGR Eliminator $20.00 from http://rjminjectiontech.com/?p=9 ... Worked as described no CEL
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  #37  
Old 07-28-2010, 07:29 PM
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good thread...im about to do the same thing to my 91 250 with 5.8. anybody got any pics? just put a big red "X" on all the crap that i can throw in the garbage. lol. im just about to yank everything attached to that pump and all related stuff.
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  #38  
Old 07-28-2010, 08:14 PM
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Removing the smog pump will gain you nothing and could lead to a lean condition. I know this first hand, i took out mine some months ago because of the lack of spare parts (can't find a replacement thermactor in Venezuela), and there were absolutely no gains, neither in mileage nor power. The result could be different on other engines, mine's a 302.
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  #39  
Old 07-28-2010, 08:16 PM
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lol i got a good air pump i can sell u.... im going to trash mine when i get some long tubes....
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  #40  
Old 07-28-2010, 09:24 PM
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Quote:
Originally Posted by mean green 91 View Post
good thread...im about to do the same thing to my 91 250 with 5.8. anybody got any pics? just put a big red "X" on all the crap that i can throw in the garbage. lol. im just about to yank everything attached to that pump and all related stuff.
I wish I would of done before and after pics but I didn't think of it, I will take some pics of the pile of crap I have left over.. I also found something really cool located on the passenger side of my engine believe it or not there's a valve cover down there
Just to make sure you know what your getting into be prepaired to remove your exhaust manifolds so you can plug/weld the air tube holes mine were located on the fire wall side of the manifold... The main reason I did mine I was removing the exhaust manifolds to replace my gaskets and I broke a couple of the air tube fittings, but I ended up getting better gas mileage and I can actually SEE my engine now.... So I'm very pleased...
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  #41  
Old 08-29-2010, 11:13 PM
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what is a smog pump and wat does it do?

heyyy man im new to the forums and i have the same motor 5.8 windsor i was wondering if u could give me sum info on wat it is
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  #42  
Old 08-30-2010, 12:18 AM
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Originally Posted by southernstyleF-350 View Post
heyyy man im new to the forums and i have the same motor 5.8 windsor i was wondering if u could give me sum info on wat it is
It's an air pump driven buy a fan belt, it part of the emissions system on your engine... It injects air into the exhaust system...
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  #43  
Old 08-31-2010, 09:26 AM
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smog pump delete

I have a 93 f150 that originally had a 302 with a 5 speed that i swapped for a 5.8. when i first did it, i wasnt happy with the power (not much more than the 5.0) and worse mileage (about 13) i ttook off my smog pump and gutted the cat. and gained tons of power and mileage. it now gets about 17 to the gallon, and has more power than my other truck that has the 460, which is now getting the smog pump delete on it. i found in a junkyard a bracket and pulley to go in place of the pump. also, on the back of the heads i just tapped pout the holes and bought plugs to fit in. very happy with how the truck has ran since
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  #44  
Old 09-16-2010, 12:45 AM
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been a lil while since a post in this thread, but does anyone have a pic of their engine bay after the smog pump delete? I REALLY want to do this to mine when I get the time. The bearings in it are getting noisy, and it sounds terrible.
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  #45  
Old 11-30-2010, 11:21 PM
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Originally Posted by hammerhead90 View Post
been a lil while since a post in this thread, but does anyone have a pic of their engine bay after the smog pump delete? I REALLY want to do this to mine when I get the time. The bearings in it are getting noisy, and it sounds terrible.
I'll be removing mine when I install my new headers in a few weeks..... and I'll post up some pics!
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Old 11-30-2010, 11:21 PM
 
 
 
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