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Old 04-28-2010, 12:14 AM
polestter24 polestter24 is offline
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Question MAF Sensor on 7.3 diesel?

Hello,
I have 02 F250 7.3 diesel. Recently installed K and N intake. Runs great fuel mileage improved however after having it on for about a week my emission light is now on. I read many threads talking about oil getting on MAF and creating this problem...where can I find the MAF? Does anyone have a picture to post showing what and where it is? Any help will be appreciated!
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Old 04-28-2010, 05:21 PM
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Question ANY HELP OUT THERE?

HELP!
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Old 04-28-2010, 08:31 PM
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FireMe has a very good reputation on FTE.FireMe has a very good reputation on FTE.FireMe has a very good reputation on FTE.FireMe has a very good reputation on FTE.
7.3 does not have an MAF sensor, so that isn't the problem.

We'll need to know what code it is setting to help, otherwise there are several hundred things that will turn the check engine light on.


Jay
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Old 04-28-2010, 09:09 PM
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Welcome to FTE. Having the exact code would be helpful. Not all code readers are compatible with the 7.3 (ignore all those 96 and up claims). Maybe you mean the MAP instead of the MAF?

Also, pay very, very close attention to the inside of the intake tube between your new K&N and the turbo. The first time you see any signs of dust in there, switch to a different filter. We've read about several dusted turbos and even dusted engines because the K&N does not filter well enough in front of our turbo.
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Old 04-28-2010, 09:22 PM
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Quote:
Originally Posted by FireMe View Post
7.3 does not have an MAF sensor, so that isn't the problem.

We'll need to know what code it is setting to help, otherwise there are several hundred things that will turn the check engine light on.


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Old 04-29-2010, 05:23 PM
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Code P0676

Thanks for the info...Pulled the code yesterday...The code that came up was P0676 which i think is a glow plug. How long should glow plugs last...Thanks again for the help.
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Old 04-29-2010, 07:17 PM
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Welcome to the forum.

Here's a link to another thread about this code: http://www.ford-trucks.com/forums/76...ighlight=P0676

I wouldn't think this code would set off an Emissions light, but....

I second the motion to put the K&N on Craigslist.
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Old 04-29-2010, 07:48 PM
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So do you have an Excursion or a California emissions package truck? Glow plug #6 is the 3rd one back on the driver side. To see if it's actually a glow plug issue, find the long flat connector on the inboard side of the driver side head and unplug it (engine off). Grab a multi meter and set it to read ohms. There will be 9 flat pins inside the connector at the valve cover. Counting from the front, test pin #8 (2nd to last) against a battery ground. A reading of less than 2 ohms means a good glow plug.

If the glow plug reads good, then you've got either a wiring or GPCM issue. If the glow plug tests bad, you've got either a wiring or a glow plug issue. The GPCM is more expensive, but much easier to replace.
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Old 04-29-2010, 07:48 PM
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