Why is my check engine light on?

So i have a 2002 v6 Ford Mustang and changed it from automatic to manual. After a day or so the check engine light came on? Can anyone help me understand why it did? Did the change throw off the car sensors?

How much should I sell my 66 Mustang for?

I have a 1966 Ford Mustang (v6 engine) that I'm thinking about selling. I'm not sure what I should ask for. My car runs nicely but it's not in pristine condition. In my area (San Francisco), I see some in great condition selling for 17k and rusted ones selling for 6k.

Cons:
Car has a salvaged title
Needs a new paint job
Interior needs some fixing

Pros:
Car runs well
Disk breaks
New dashboard and steering wheel How much should I sell my 66 Mustang for

How can I quickly raise $7500?

I'm 14 and car shopping because I want to have a car to use when I get my permit, and I want to be used to the car by the time I get my license. There's a used 2005 Ford Mustang for sale (which is essentially my dream car) near me, but the price is set at $7500, and the car is perfect for me, but I don't know how long it will be on the market for, and my parents definitely won't pay for it. So does anyone know any quick ways to earn money (legally of course)?

Have a misfire on my Ford Mustang V6 3.8 2004 ?

The misfire is on cylinder 2 & cylinder 6 I just changed all the spark plugs and all the wires not to long ago I put a new coil pack also I'm just worried I have no clue what it could be please help

Ford Mustang 2000 cranks but doesn't turn on?

Everything was perfect. Car would crank b run but I replaced the whole dashboard to a new one but now that I put it all together, can doesn't start. It cranks but nothing. I have everything connected I even bought a new battery but nothing. What could it be or can you name the wires that have to do with that issue maybe it's not plugged right

I crashed my 2016 ford mustang

So, I was driving to the University I attend (the usual) and as I was driving, it started to rain but I could tell my wheels were not gripping onto the ground and my traction control kept going off and within 10 minutes of driving on highway 360, I lost control of the car as I merged to the left lane and spun out and slammed into the highway divider. Then my car proceeded to slam into a chevy truck after ricocheting off the highway divider before coming to a complete stop. It all happened in a blur and I have constant anxiety from it and I can't stop thinking about it. The worst part is that I don't have full coverage and now I have to pay for everything. The money I don't have. I've lost a lot of hope and now I'm just desperate to get another car fast so I can continue driving to my college as I commute there. I never sped, I was on cruise control the whole way but I did not change my tires as I should have. My tires ridges were flat and did not have the surface area to grip on the street in the rain. I have so much regret and I know my car is totaled and my insurance will only pay for the claim the other people filed on me. The damage is too great to get any value from it back and the insurance I called would not help me. My car was towed and is now currently sitting in their yard which I have to pay 25 dollars a day for storage fees. What should I do? Any advice would help.

How long do 2015 BMWs last for?

I'm looking to get either a 2, 3, or 5 series BMW at about 35-50k miles. At what mileage do their engines start having problems? And are they major/expensive problems? Please offer any recommendations you may have or better options for vehicles. My other option is a 2016 Ford Mustang (EcoBoost).