ser. eng. soon light is on after upgrades
02-01-2007, 01:22 AM
#1
3rd Gear Member
Thread Starter
Join Date: Jun 2006
Location: Pa
Posts: 643
ser. eng. soon light is on after upgrades
Since installing the BBK catted x pipe, JLT ram air, and Magna Packs the cars service eng. soon light is on. I've disconnected the battery scanned for codes and erased the codes but the light comes back on. The codes are p7a00, p68c3, & p79fc.
So instead of me enjoying the additions to the car I've got to worry about finding a remedy for this situation some how. Also the gas millage is pretty bad about now.
So instead of me enjoying the additions to the car I've got to worry about finding a remedy for this situation some how. Also the gas millage is pretty bad about now.
02-01-2007, 09:36 AM
#6
5th Gear Member
Join Date: Mar 2005
Location: Navarre, FL
Posts: 3,689
RE: ser. eng. soon light is on after upgrades
ORIGINAL: LX90
Those three codes are for O2 sensors, most likely they are connected backwards, have them checked. Gas millage will go way down if the O2s aren't working right.
Those three codes are for O2 sensors, most likely they are connected backwards, have them checked. Gas millage will go way down if the O2s aren't working right.
02-01-2007, 09:53 AM
#7
2nd Gear Member
Join Date: Jan 2006
Location:
Posts: 371
RE: ser. eng. soon light is on after upgrades
The computer is in open loop when the cel is lit. Retune and your done. Most tuners that you buy have preloaded tunes to solve this.Mils dont give you power! Timming and a flat air fuel is where the power is at. IMO sct with a custom tune.
02-01-2007, 10:09 AM
#8
5th Gear Member
Join Date: Nov 2006
Location: Bay Minette Alabama
Posts: 3,080
RE: ser. eng. soon light is on after upgrades
ORIGINAL: gt96stang
False.. I've got a bad o2 sensor and I am getting the same gas mileage as I was before.. It might slightly go down, but my driving habit isn't exactly the same every time so I wouldn't know.
ORIGINAL: LX90
Those three codes are for O2 sensors, most likely they are connected backwards, have them checked. Gas millage will go way down if the O2s aren't working right.
Those three codes are for O2 sensors, most likely they are connected backwards, have them checked. Gas millage will go way down if the O2s aren't working right.
02-01-2007, 10:33 AM
#9
3rd Gear Member
Thread Starter
Join Date: Jun 2006
Location: Pa
Posts: 643
RE: ser. eng. soon light is on after upgrades
At first I thought it ran like crap because I was so focused on the sound of the car and really didn't pay to close attention to it's performance, but a week later the sound is very good and outside of it burning gas more than usual it seem the performance side of things are ok.
02-01-2007, 05:19 PM
#10
3rd Gear Member
Thread Starter
Join Date: Jun 2006
Location: Pa
Posts: 643
RE: ser. eng. soon light is on after upgrades
I'm back from getting the tip welded on and the muffler shop manager said that u should install new o2 senors when getting a new mid pipe w. cats. Is thistrue ?