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> engine noise, sounds like a deisel motor sometimes
Avgjoe
post Feb 14 2007, 07:38 PM
Post #21


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I have an '05 Endeavor AWD with 45000 miles and am having the same problem. I had the codes checked and it was registering a cylinder 3 misfire. I have recently switched to premium, but I was wondering how many tank fill ups would be required to "flush" out the low octane fuel. I guess it probably would not be a bad idea to have the updates downloaded either.
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Avgjoe
post Feb 14 2007, 09:25 PM
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I was wondering if maybe I should reset my ECU in order to recognize the difference in fuel? I have run a full tank on premium and I am due for another fill up. The problem has lessened but it still runs pretty rough.
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manybrews
post Feb 16 2007, 06:25 PM
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QUOTE(Avgjoe @ Feb 14 2007, 07:38 PM)
I have an '05 Endeavor AWD with 45000 miles and am having the same problem.  I had the codes checked and it was registering a cylinder 3 misfire.  I have recently switched to premium, but I was wondering how many tank fill ups would be required to "flush" out the low octane fuel.  I guess it probably would not be a bad idea to have the updates downloaded either.
[right][snapback]85665[/snapback][/right]

you wont get a misfire from low octane fuel. you either have a real misfire, or need a software update.

and you only need to run through the tank to "flush" out the gas. Its not like it has remnants or something.
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manybrews
post Feb 16 2007, 06:27 PM
Post #24


Mitsu tech. For a LONG time.
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QUOTE(Avgjoe @ Feb 14 2007, 09:25 PM)
I was wondering if maybe I should reset my ECU in order to recognize the difference in fuel?  I have run a full tank on premium and I am due for another fill up.  The problem has lessened but it still runs pretty rough.
[right][snapback]85671[/snapback][/right]


there is nothing to "reset" on the ECU. the monitoring of engine knock is done continuously.

if it runs rough, you probably should have it diagnosed.
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Avgjoe
post Feb 21 2007, 12:44 PM
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I took it to the dealership and they said that it was a bad coil. I will have the vehicle back tomorrow.
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