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better gas mileage #1632029 08/18/06 12:22 AM
Joined: Jul 2006 Posts: 9 A azs OP Newbie
OP azs Newbie A Joined: Jul 2006 Posts: 9	hello, i'm not sure where to post this, sorry if its the wrong spot, I have a 2.5 duratec, and have been wanting better gas mileage on the highway, i was wondering if it's possible to make a switch to turn off a few of the fuel injectors, so i potentially would have a four cylinder engine, much like chevy suburbans have the "on demand engines" that turn off some of the injectors during highway driving. Would this idea work, or would the pcm get screwed up, or possibly ruin my engine?

Re: better gas mileage #1632030 08/18/06 12:33 AM
Joined: Jun 2005 Posts: 5,345 Virginia, USA T Tony2005 Addicted CEG\'er
Tony2005 Addicted CEG\'er T Joined: Jun 2005 Posts: 5,345 Virginia, USA	Originally posted by azs: ...I have a 2.5 duratec, and have been wanting better gas mileage on the highway, i was wondering if it's possible to make a switch to turn off a few of the fuel injectors,... I doubt it is possible to make a switch for that, the PCM would need to be reprogrammed or it will think that the engine is running lean and then compensate until it reaches a limit, and then turn on the P0171 and P0174 code. And then go into the limp mode and you will be looking at worse gas mileage again. Save gas, drive slower or sell the Duratec and buy a Zetec. "Always do the cheap and easy ones first." 1996 V6 ATX 96K miles

Re: better gas mileage #1632031 08/18/06 11:43 AM
Joined: Sep 2002 Posts: 1,788 St. Louis, MO P projectSHO89_dup1 Hard-core CEG\'er
projectSHO89_dup1 Hard-core CEG\'er P Joined: Sep 2002 Posts: 1,788 St. Louis, MO	This is NOT possible. Sorry. The advanced systems used by both GM and Ford also have the mechanical capability to control the operation of the valves on the shut-down cylinders. Cna't exactly retrofit this capability. Steve 98 Contour SE Sport 2.5 Duratec ATX The wifey's car 89 Taurus SHO - 246K miles 94 SHO ATX - 190K 1997 F-150 5.4L ATX - The Workhorse 150K. ANY THREAD WITH "OMG" or "WTF" ETC IN THE TITLE WILL BE IGNORED!

Re: better gas mileage #1632032 08/18/06 04:34 PM
Joined: Aug 2002 Posts: 853 B BlackE1 Veteran CEG\'er
BlackE1 Veteran CEG\'er B Joined: Aug 2002 Posts: 853	No need to double post, one thread should be enough to get your answer 98.5 Black SVT with 34k miles Build #5683 Born on 4\15\1998 WR Headers GMK CAI Blaupunkt system fiberglass tweeter pods L.E.D. tail lights in the works

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