HELP

[bradb202]

hey guys, i just put an intake on my sixer and after i did the check engine light came on. So to turn it off I disconnected the battery for about an hour then hooked it back up. The light was off when i cranked it but about 1 minute down the road it came back on. I took it to the dealership and they didnt find anything wrong and turned the light off again. Once again one minute down the road from the dealership and my light turns back on....how can i get the check engine light off and stay off until somehting really is wrong? why is the new intake making this happen?

 

[vancebreck]

If you are talking about a cold air intake, I have read that most require a new tune which means you will have to go buy an XCAL. I think the one exception is the K&N CAI which doesn't require a tune.

 

[GrayPony]

What brand of intake? What was the code?

 

[Putter]

Yeah, what was the code.
Did you tell the dealer that you had just installed a CAI?
Could be a coincidence with something else.
The dealer should have investigated the cause and not just reset the code.

 

[Frank S]

If you are talking about a cold air intake, I have read that most require a new tune which means you will have to go buy an XCAL. I think the one exception is the K&N CAI which doesn't require a tune.

I thing you right.

What a CAI does is increase the amount of air relative to the amount of fuel entering the combustion chamber, a "lean" condition. Running an engine lean can result in overheating of the internal surfaces, pre-ignition (the fuel/air charge doesn't wait for the spark to ignite it, since there is already something plenty hot to do the job) and "pinging". Too much or too long of an episode like that can destroy an engine, so the computer sends a message to your "trouble light" to warn you to do something before it all falls down around your ankles and you land on your face.

I'm not saying stealerships are mean old money-grubbers, but if they didn't tell you all that, they may be looking forward to your next visit, when you bring them an engine rebuild rather than a trouble light to fix.

Answer is, take off the CAI unless you get that good tuner tune. Big investment, $350.00 or more. No free lunch, or horsepower. Fact of life.

Good luck.

 

[bradb202]

problem solved...hopefully

I'm not saying stealerships are mean old money-grubbers, but if they didn't tell you all that, they may be looking forward to your next visit, when you bring them an engine rebuild rather than a trouble light to fix.


Good luck.

ding ding ding, we have a winner...I took it to autozone to get my problem code and it was running lean with a misfire.....so i took off the intake and ordered a tuner. I'm not quite used to working with this newer model mustang, me and my brother worked alot on his old 03 mustang and never had any problems with his intake system and we never got it tuned. live and learn i guess. So im hoping that running that intake on it for a couple weeks didnt do any long term damage. now that the stock intake is on there is no light and it runs smooth. I got the SCT Xcalibrator 3, did some research and felt like that was the best fit my stang.....so when it arrives i'll throw back on the CAI with the tuner and hope for nice gains....there shouldnt be any lingering effets of running my engine lean since i switched back to the stock intake and dont have any problems now right???