Check engine light?

Not sure would have to take the truck in again to find out the code. The last time it happened it was a misfire and they changed the plugs and wires. The time before was the sensor.I'm just not sure what to do as every time I take it in and something gets fixed it lasts about a week and the light comes on again then its another bill. Trying not to end up with a complete rebuild to find out why this light keeps coming on. Truck seems to run fine. There was a little buck in the motor which seems to have been fixed with the new plugs and wires. Also pryer to the last two fixes there was a good amount of work done just to get it past the emissions test which at that time the same thing was happening fix it drive it and the light would come on.

Start when got bad gas was able to fix with plugs, wires, fuel filter, started running fine someone put bad gas in again. So started over new plugs changed coil packs dig. Code says #3 mis firing. Light stays on then starts flashing if u take it out of over drive to raise rpms it will run better not great. Runs really rough feels like mis fire r that its carboned up. Getting only about 11 mpg wasn't sure if put new fuel filter r if had censor going bad r what next step is

I have added it several times doesn't change it at all

My check engine light does not come on at all. What would cause this and how do I fix it so that it does come on like it is supposed to so that I will know if there is ever a problem.

How do I check the bulb to see if it is there or if it is not and if it is blown?
Thanks

How do I check to see if the bulb has been removed or if it is blown?
Thanks

I have checked all the fuses and they are all ok. How do I remove the cluster to get to the bulb?
Thanks

My instrument gauges have stopped working. But when the check engine light comes on the come alive and work just fine. What could be the problem?

When I start it up in the morning on my way to work the gauges for the most part do not work, but sometimes while I am driving the check engine light will come on and then they work like they are supposed to.

I have a 1998 F150 check engine light comes on and temp gauge gos all the way up. If I turn engine off for about 15 to 30 seconds it gos back to normal. Can someone help please. Thanks

My check engine light has been on in the truck for quit some time. The mechanic I go to has run tests on it and the codes it throws back are Bay 1 & 2 are low. I am not sure what that means and he was not certain either. Just recently the truck has started to have the check engine light flash. I am not sure what the cause of the flashing light is, but it only does it on occasion. It does not happen everyday, just once in a while. Once it flashes for a few seconds it then goes back to just staying on.

The other question I have is my truck has just started this idolling problem when the cold weather decided to set in. It wont stay running when in idol, and it will die. I am not sure the cause of this. If it is warm outside it does not have this problem. I ran a couple tanks of STP gas treatment through the truck and it seemed to help it and it hasn't gave me any problems lately, but was curious what it could be causing this problem.

Question my check engine light comes on then a maybe a day later it goes off had all my sessors replaced check engine came back on again the code was bank1 sessor2 what should I do? Or what should I look for?