FordExcursions.com Forums
short79572
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• staten island, NY, USA |
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• Registered on 8/7/2005 |
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• 12 posts |
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 Posted:3/6/2009 17:08 |
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hi every one i have a 2001 ford excursion V10 it has about 93thou on the clock i was just recentley driveing the car and it felt like it was missing in a cyl like a coil pack was bad the check engine light came on and i got a code of P0175 which means lean in bank 2 i have checked mass air, injestors is there any one out there that can give me any more info thank you so much |
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monsta
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• The Big Island, HI, USA |
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• Registered on 1/5/2002 |
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• 1,056 posts |
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Posted:3/12/2009 04:45 |
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Check the hose to the PCV. It can crack at the elbow and set a lean code.
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short79572
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• staten island, NY, USA |
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• Registered on 8/7/2005 |
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• 12 posts |
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Posted:4/14/2009 20:18 |
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nope that not it it is wired it feel like i get on the highwat and it like a coil pack kicks on and off i just replace all the coil packs and i get the same thing p0175 |
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LANDYOT
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• Subscriber since 11/23/2003 |
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• Newport News, VA, USA |
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• Registered on 7/15/2003 |
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• 1,110 posts |
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Posted:4/18/2009 09:12 |
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If the air-fuel mixture is becoming lean, then the fuel flow must not be up to snuff. When's the last time you changed the fuel filter? And that reminds me that I need to change mine. |
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monsta
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• The Big Island, HI, USA |
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• Registered on 1/5/2002 |
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• 1,056 posts |
• 2
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Posted:4/18/2009 22:47 |
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Computer controlled engines we will usually only run lean if there is an unmetered air leak or a faulty sensor. A plugged up fuel filter will crreate driveabilty issues but the PCM will adjust to mixture.
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LANDYOT
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• Subscriber since 11/23/2003 |
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• Newport News, VA, USA |
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• Registered on 7/15/2003 |
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• 1,110 posts |
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Posted:4/19/2009 07:58 |
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| Quote: | | Computer controlled engines we will usually only run lean if there is an unmetered air leak or a faulty sensor. A plugged up fuel filter will crreate driveabilty issues but the PCM will adjust to mixture. |
Yes, I agree, but the PCM can only adjust for so much. Each sensor in today's engines has an operating range in which it can provide readings to the PCM. Even the PCM will only accept readings within certain ranges. Go outside the allowable ranges ... go byond the ranges calculated by the design engineers (usually due to a mechanical problem) ... and the PCM cannot adjust, and though it should go into "limp mode," it may sometimes throw some codes unrelated to the source of the problem.
A vacuum leak is indeed a possibility. Another reason I tossed out the fuel filter idea is because that's an item frequently forgotten, and could be an issue on a higher mileage engine. I had forgotten mine, and this thread reminded me that I should change mine. |
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short79572
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• staten island, NY, USA |
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• Registered on 8/7/2005 |
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• 12 posts |
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Posted:5/13/2009 15:23 |
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i changed the fuel filter and still the same thing i have to search for a vacaume leak now wish me luck |
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