My 2003 Mercury Mountainer has suddenly shown "check engine soon" light. This was after I had a normal oil change, air filter replacement and tire rotation plus replacing the Torsion bar ( car had 42 thousand plus miles), boot was beginning to crack.
Light continues to stay on, thru over four fill up's. Want to get a OBD2 tester and find out the codes to locate trouble.
Have checked under the dash as well as under the hood and the owners manual, but can not find the contact/connection. Thanks for any help you can give me...WMH
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You need to get someone who has an OBD2 scanner to plug into the diagnostic link and see what the computer is saying the problem is. Sounds like you have an electrical short, but without a scanner, it could be many things and you would be guessing and searching like a needle in a hay stack.
If your brake lights will not turn off, check it this way-Pull UP on the brake pedal. If the lights go off, you need to adjust the stop light switch, which is mounted on the upper brake pedal (it has an electrical plug in attached to it)
If you are referring to the Check Engine light then this indicates there is a problem with the emissions system. Have the ECU scanned with an OBD2 scan tool. The fault code that has been set by the ECU will tell you where to look for the problem. If the engine is running fine there is no hurry, but do have this looked into.
If you are referring to the oil pressure light stop driving the car until you get this repaired as it may be serious.
drop in to autozone they will scan the code and let you know what it is. i highly doubt the clicking noise is related to light. if you have kids they may have dropped something into the vents... or something has fallen in.
On all cars and trucks that are 1996 or newer they have a system called obd2 and the computer monitors anything thats plugged into it like sensors. The light is on because your computer has found a problem with 1 or more of them. If you want to know what area is having a problem you need to have the codes read by a obd2 scanner or code reader some auto part stores do this for free or oil
change store or mechanic shop