Just a heads up 4.9L owners - AIR PUMP DELETE BELT #
02-21-2017, 07:17 PM
#101
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air injectors ( thermactor plugs)
does anyone know if the there is a size difference in the thermactor plugs after deleting the air injection system. I searched everywhere for a specific set for a 4.9 and it keeps bringing up 5.0 etc. so just wondering?? help a guy out. thank you
02-23-2017, 10:52 PM
#103
I used brass 1/4 npt allen plugs(if I remember right) but they didnt fit as well as I had hoped but I was already committed to using them(destroyed my other parts getting them out) so I used two in each hole and used some high temp thread locker. They tightened up well and havn't leaked but When i take the intake off again I plan on having the right plugs ordered from a machine shop.
09-16-2017, 06:02 PM
#104
thanks to all
800k6 is the correct belt for a/c, and smog pump bypass on a 1996 Eddie Bauer 4x4 f150 6 cylinder. just did it out of necessity to get the vehicle home,leaving it that way, for sure. truck runs better than it has in two years,just my case, not trying to argue against anyone else s opinion
11-21-2017, 08:13 PM
#105
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mine is making a noise is why I want to delete it, does anyone know the part number for the bypass pulley, and does any one have a pic of how its routed with out the pulley? mines a 91 f150 4x4 300 6
Last edited by Beejus44; 11-21-2017 at 08:16 PM. Reason: added text
01-25-2018, 04:16 PM
#106
New to the F150 world
FOR OFF-HIGHWAY USE ONLY: I have a '92 F150 4.9 w/AC & AT/4wd: The cats are gone and most of the emissions gear is MIA. There were NO hoses connected to the AIR pump and it turns roughly, so I'm removing it.
Does anyone know of a AIR Pump bypass pulley for the 4.9? My pump housing has this number cast into it: 606R-777056 CAV9 M. Clockwise rotation facing the front of the AIR pump. Please advise.
Thank you!
Does anyone know of a AIR Pump bypass pulley for the 4.9? My pump housing has this number cast into it: 606R-777056 CAV9 M. Clockwise rotation facing the front of the AIR pump. Please advise.
Thank you!
01-27-2018, 12:17 PM
#107
I don't believe an idler pulley assembly exists for the 4.9 like it does for the V8 engines. I just omitted it entirely. The wrap around the alternator pulley is just about a full 180-degree turn now, but it's worked fine for me. There may however be some subtle differences with the bracket on the '92+ 4.9. My truck is a '91.
05-25-2018, 03:25 PM
#108
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Hey Kawiegirl26 I tried that napa belt as well and it didnt work for me neither so I pulled my tackle box out got some fishing string and measured it the hard way 
If you need a picture of my truck(belt) shoot me a text 407-591-1715. Hope that helps oh and the belt number that worked for me was K060919 thats a master pro belt worked better that the Napa.
If you need a picture of my truck(belt) shoot me a text 407-591-1715. Hope that helps oh and the belt number that worked for me was K060919 thats a master pro belt worked better that the Napa.
11-07-2018, 09:15 AM
#109
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my friends went out and locked up after a few days of a ticking noise, it popped his belt. Bypassing it is the fastest least expensive option.(polk county fl here).
12-12-2019, 06:33 PM
#110
If I delete air pump on my 96 f150 with a 4.9 l will it cause my check engine light to come on I'm in my n need to get it inspected the tube that goes from pump to exhaust is rotted off n don't wanna replace the exhaust system had hole in exhaust welded to fix the leak now get ban 1 and 2 are lean cause tube is not hooked up causing a leak