Check engine light

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01-23-2005, 09:16 PM

Rushford

Thread Starter

Join Date: Nov 2004

Location: Sacramento

Posts: 27

Check engine light

I just put a mac pro chamber on my car and now when ever i hold the tack at 3,000 after a while the check engine light comes on. i took it to a shop and got charged 75 bucks to reset it. They told me it was because the car had been red lined. I have never redlined my car and don't plan to. i have heard of MIL eliminators but am cautious about buying things that mess with the computer. Any advice?

01-23-2005, 09:18 PM

primetime5.0

6th Gear Member

Join Date: Dec 2003

Location: United States

Posts: 9,587

RE: Check engine light

if its an offroad pipe you'll need mil eliminators, the reads the car as having cats with the eliminators in, they dont mess with the computer and they dont harm anything

01-23-2005, 09:21 PM

97STANG

2nd Gear Member

Join Date: Mar 2004

Location:

Posts: 311

RE: Check engine light

if you have no cats, then you NEED the MIL eliminators. This "fools" the computer to think you have cats, and sends a signal that says your emissions are fine. If you dont have them, your s.e.s light (service engine soon) will come on.

oh, also to, thats b.s about redlining your car and causing the light to come on!

01-23-2005, 09:40 PM

Rushford

Thread Starter

Join Date: Nov 2004

Location: Sacramento

Posts: 27

RE: Check engine light

how many would i need to get. I have 4 O2's now would i have to get 4 mils.

01-23-2005, 10:01 PM

primetime5.0

6th Gear Member

Join Date: Dec 2003

Location: United States

Posts: 9,587

RE: Check engine light

you'll need 2 of them just for the 2 sensors closest to the mufflers

01-23-2005, 10:41 PM

Pacman

2nd Gear Member

Join Date: Oct 2004

Location:

Posts: 251

RE: Check engine light

stangs have 4 o2 sensors? i thought i had 2.

01-23-2005, 10:45 PM

primetime5.0

6th Gear Member

Join Date: Dec 2003

Location: United States

Posts: 9,587

RE: Check engine light

5.0's have 2

01-24-2005, 01:30 AM

nastystang

Join Date: Jan 2005

Location:

Posts: 31

RE: Check engine light

Quote:

ORIGINAL: Pacman

stangs have 4 o2 sensors? i thought i had 2.

I think all the 4.6 Stangs ahve 4 o2 sens. 2 beforethe cats and 2 after

01-24-2005, 04:30 AM

2000GT4.6

6th Gear Member

Join Date: Jan 2004

Location: United States

Posts: 12,575

RE: Check engine light

Quote:

ORIGINAL: Rushford

I just put a mac pro chamber on my car and now when ever i hold the tack at 3,000 after a while the check engine light comes on. i took it to a shop and got charged 75 bucks to reset it. They told me it was because the car had been red lined. I have never redlined my car and don't plan to. i have heard of MIL eliminators but am cautious about buying things that mess with the computer. Any advice?

If you dont have cats you gotta get em. There are 4 sensors on the 4.6, two before the cats and two after. The ones placed before the cats help regulate the a/f and all that jazz. The 2 after the cats simply look for the emmissions to show there are cats in place. They do abosolutly nothing.

My custom tune acutally has the two rear 02 sensors turned off.