Check engine soon light.

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Apr 19, 2004 | 06:22 PM

AT6AERO

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From: NE Ohio

Check engine soon light.

Installed my Gibson exhaust, all ok, Installed my K&N cold air intake, all ok, Installed by Diablo chip, all ok. Installed my JBA headers, now my check engine soon light is on. Checked all the electrical connections. They are all ok. Any ideas?

Last edited by AT6AERO; Apr 19, 2004 at 06:29 PM.

Apr 19, 2004 | 08:07 PM

travlnman

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Joined: Dec 2003

Posts: 752

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From: North Carolina

Go to autozone and have them pull the codes for you. It takes 5 min. and is free. Then you will know where to start. My guess is probably an oxygen sensor.

Apr 20, 2004 | 08:30 AM

AT6AERO

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From: NE Ohio

Went to autozone. They said the code is EGR insufficient flow. Now what? Could this be due to the headers?

Apr 20, 2004 | 09:19 AM

true4.2

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From: Lufkin

Is it running lean? Have you taken the chip out and tried running it without the chip? See if that fixes it. If so, call Motorhaven or wherever you bought the chip from to get it fixed.

Apr 20, 2004 | 09:25 AM

travlnman

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Joined: Dec 2003

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From: North Carolina

I had the same prob about a month ago. I replaced the egr valve, but no good. Then I cleaned the pipe that feeds the egr valve and got a egr excessive code. Turns out it was the dpfe sensor. This sensor is just before your egr valve, it has 2 little pipes coming to it off of the main pipe that feeds the egr valve and an electrical plug. Cost was about 34.00. I had to get it at the Ford dealer, because the local autozone, advance, pep boys,etc. did not carry it.

Apr 20, 2004 | 09:39 AM

AT6AERO

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From: NE Ohio

Everything was fine until I installed the headers. Truck only has 25K mi. on it.

Apr 20, 2004 | 11:54 AM

travlnman

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Joined: Dec 2003

Posts: 752

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From: North Carolina

Yep, mine came about after I installed a magnaflow exhaust.Should still be under warranty, tell 'em to fix it!

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Apr 25, 2004 | 11:09 PM

horizonhuskies

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Joined: Jul 2003

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From: Scottsdale Az is home, St

check the egr inlet in the header......mine was loose and I lost 8 MPG. wasnt even hand tight. getting 17MPG again

Supercharged and all. Hehe!

Garrett

Apr 26, 2004 | 06:40 AM

#10

AT6AERO

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Joined: Mar 2004

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From: NE Ohio

Double checked everything after the light came on. All seemed ok. Like I said, as long as I start the truck and let it warm up with the chip off, I haven't had any light.