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General >> Troubleshooting

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azs
Newbie

Reged: 07/03/06
Posts: 9
better gas mileage
#1302650 - 08/18/06 12:22 AM

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?


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Tony2005
Addicted CEG'er

Reged: 06/19/05
Posts: 5345
Loc: Virginia, USA
Re: better gas mileage new
#1302654 (Re: azs) 08/18/06 12:33 AM

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


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projectSHO89
Hard-core CEG'er

Reged: 09/19/02
Posts: 1788
Loc: St. Louis, MO
Re: better gas mileage new
#1302933 (Re: azs) 08/18/06 11:43 AM

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!

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BlackE1
Veteran CEG'er

Reged: 08/17/02
Posts: 853
Re: better gas mileage new
#1303106 (Re: projectSHO89) 08/18/06 04:34 PM

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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