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Old 02-06-2012, 06:14   #1 (permalink)
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2003 Ford Explorer Sport

My 2003 Ford Explorer has been a great vehicle. I have only had to do brakes and tires on the car. However, my check engine light came on a few months back and after multiple items have been changed the light is still on and the problem still exists. When I start up the vehicle it may die after a few seconds. This is not consistent and does not seem to be related to environmental condition. It has been tuned up, fuel filter replaced, o2 sensor replaced a kinked fuel hose replaced, the battery was replaced in the past year, and my mechanic has tried a fuel pump all to no avail. What is he missing????
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Old 02-06-2012, 07:22   #2 (permalink)
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Re: 2003 Ford Explorer Sport

What codes are you getting and what engine is it?
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Old 02-06-2012, 07:30   #3 (permalink)
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Re: 2003 Ford Explorer Sport

It is a V6. If you need more specific information than that I will check my manual. I can't remember the codes. I know one was for the Oxygen. I will ask the mechanic and then post.
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Old 02-06-2012, 07:46   #4 (permalink)
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Re: 2003 Ford Explorer Sport

171 is the code. He is going to re-check it to see if it is the same code.
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Old 02-06-2012, 08:46   #5 (permalink)
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Re: 2003 Ford Explorer Sport

The MAF sensor is often dirty and can cause that. Here's a link to some information on the code. Very often, it comes with P0174.

OBD-II Trouble Code: P0171 System Too Lean (Bank 1)

OBD-II Trouble Code: P0174 System Too Lean (Bank 2)
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Old 02-06-2012, 17:00   #6 (permalink)
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The MAF was changed today, so far it is good.
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Old 02-06-2012, 18:43   #7 (permalink)
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Re: 2003 Ford Explorer Sport

Keep us posted.
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Old 02-06-2012, 18:51   #8 (permalink)
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Re: 2003 Ford Explorer Sport

The light popped on while I was out this evening. I am going to take it to the dealer and see what they say. Everything else has been exhausted it seems.
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Old 02-06-2012, 20:04   #9 (permalink)
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Re: 2003 Ford Explorer Sport

Maybe the intake gaskets or a vacuum leak some where.
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Old 02-13-2012, 11:03   #10 (permalink)
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Re: 2003 Ford Explorer Sport

Clogged cat converter perhaps? Would explain the O2 light on, or bad sensors all around. Or perhaps even a crank position sensor....
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