02-14-2012, 03:48 PM
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#31 (permalink)
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eco....something or other
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I need to have all 6 cylinders on tap because this truck works hard. 3 cylinders might have a little trouble pulling 13,000 lbs up a hill. I want to be able to turn off three cylinders when running empty or near empty.
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1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
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02-14-2012, 03:51 PM
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#32 (permalink)
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EcoModding Lurker
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I see, didn't read that part!
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02-14-2012, 04:50 PM
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#33 (permalink)
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eco....something or other
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OK, here it is.  The noise is my bed flopping around.
300-6 on 3 cylinders - YouTube
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1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
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02-14-2012, 05:34 PM
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#34 (permalink)
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Master EcoModder
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Put the feed on a toggle switch. On off. Done. Try it and let me know if it works
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02-14-2012, 05:39 PM
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#35 (permalink)
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eco....something or other
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You mean the O2 feed, right?
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1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
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02-14-2012, 08:10 PM
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#36 (permalink)
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eco....something or other
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I pulled the codes:
172
225
Now I have to work on it again.
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1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
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02-14-2012, 10:46 PM
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#37 (permalink)
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Master EcoModder
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Buggie - '01 Vw Beetle TDI Gls
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No. Injector feed. They're strung like an Xmas tree lights. Find one side , cut the wire, connect two wires and run them into the can and hook to a switch. You can do both side so you can alternate
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02-14-2012, 10:50 PM
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#38 (permalink)
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Master EcoModder
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Buggie - '01 Vw Beetle TDI Gls
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Dont worry about codes. Your sensor will read lean with extra air in the exhaust from cylinders not firing Could eventry disconnecting 02 sensor. Just run in open loop. Does it need much more throttle to get going?
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02-14-2012, 10:52 PM
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#39 (permalink)
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Master EcoModder
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Buggie - '01 Vw Beetle TDI Gls
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Or wire in a resistor to give a constant reading to the 02 circuit so it will maintain proper fuel ratio. May not need it, check your plugs that work to see if they're black
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02-14-2012, 10:59 PM
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#40 (permalink)
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eco....something or other
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I retrieved those codes after clearing the system and driving with all 6 cylinders firing.
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1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
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