Running lean...
#1
Running lean...
So my engine decides to throw two CEL lights today. Running lean in bank 1 and 2. I have LT headers and CAI with a Steeda tune. Anyone know what is going on or what I'll have to do to fix it? It's my DD, so I'm screwed if something happens.
#2
I propped the hood and wow it was really hot under there although the cylinder heads only got up to 207 degrees. Especially just for cruising around for a few minutes at low speeds (under 45)
My air to fuel ratio is 14-14.5 at idle and up to 15,16, and 17 with small revs. When driving, it stays around 14. When I brake, it goes all the way up and pegs out at 20.
My air to fuel ratio is 14-14.5 at idle and up to 15,16, and 17 with small revs. When driving, it stays around 14. When I brake, it goes all the way up and pegs out at 20.
Last edited by blairnr67; 3/30/13 at 11:29 AM.
#3
I propped the hood and wow it was really hot under there although the cylinder heads only got up to 207 degrees. Especially just for cruising around for a few minutes at low speeds (under 45)
My air to fuel ratio is 14-14.5 at idle and up to 15,16, and 17 with small revs. When driving, it stays around 14. When I brake, it goes all the way up and pegs out at 20.
My air to fuel ratio is 14-14.5 at idle and up to 15,16, and 17 with small revs. When driving, it stays around 14. When I brake, it goes all the way up and pegs out at 20.
#6
#7
You know what? It could have. I went back to the shop yesterday to get my catback readjusted because it was hitting on the PH bar brace. It wasn't going off before then. I'll get up under the car and check.
#8
Did the car run properly before you took it to the shop? If the car was running properly then popped the code ... then like you said ... you may have to check the connections.
If you are still throwing the code ... then shoot me an email at tim@steeda.com so that I can let Gus know he can see what is taking place.
Best Regards,
TJ
If you are still throwing the code ... then shoot me an email at tim@steeda.com so that I can let Gus know he can see what is taking place.
Best Regards,
TJ
#9
Did the car run properly before you took it to the shop? If the car was running properly then popped the code ... then like you said ... you may have to check the connections.
If you are still throwing the code ... then shoot me an email at tim@steeda.com so that I can let Gus know he can see what is taking place.
Best Regards,
TJ
If you are still throwing the code ... then shoot me an email at tim@steeda.com so that I can let Gus know he can see what is taking place.
Best Regards,
TJ
#10
You really need a good custom dyno tune from a reputable tuner. You just can't trust a mail order tune especially with a daily driver. It's really worth the money for reassurance that you're not harming the engine. I'm sure the guys at Steeda know what they're doing but its just not same in my opinion.
Last edited by AlsCobra; 3/30/13 at 06:03 PM.
#11
You really need a good custom dyno tune from a reputable tuner. You just can't trust a mail order tune especially with a daily driver. It's really worth the money for reassurance that you're not harming the engine. I'm sure the guys at Steeda know what they're doing but its just not same in my opinion.
#15
I propped the hood and wow it was really hot under there although the cylinder heads only got up to 207 degrees. Especially just for cruising around for a few minutes at low speeds (under 45)
My air to fuel ratio is 14-14.5 at idle and up to 15,16, and 17 with small revs. When driving, it stays around 14. When I brake, it goes all the way up and pegs out at 20.
My air to fuel ratio is 14-14.5 at idle and up to 15,16, and 17 with small revs. When driving, it stays around 14. When I brake, it goes all the way up and pegs out at 20.
Sorry for the noob question... But what should the numbers be at idle, while just regular driving, and at WOT?
Stock car.
Thanks
#17
#18
Sometimes custom tune do not cover all add ons. I am a little surprised you put on after market headers. I may be wrong but I have been hearing the stock manifolds are better than any aftermarket on the current 5.0. But that is where your tune may be giving you issues. I hope you do find the problem and get it fixed. No fun to be burning up the engine on your ride. Goo luck.
#19
Sometimes custom tune do not cover all add ons. I am a little surprised you put on after market headers. I may be wrong but I have been hearing the stock manifolds are better than any aftermarket on the current 5.0. But that is where your tune may be giving you issues. I hope you do find the problem and get it fixed. No fun to be burning up the engine on your ride. Goo luck.
#20