Why check engine light dont come on when starting1999 mustang

You have a serious wiring issue. No way it will start if engine does not crank. Why isn't the starter turning? Is it good? Is it getting power? if not, did you go to power source and check? start relay?

I don't believe there is a separate fuse for the high-mount brake light. Never was on older cars, that brake light is just spliced into the rear brake lights. Have you checked the bulb?

go to Advanced Auto or any other parts store, they will usually read the codes for free. Without a code reader, you can not troubleshoot the code.

Hi,

$500 is a bit high. The sensors are on the exhaust and basically they help your car exhale. If you continue driving on a bad one it will throw your exhaust, intake and finally engine off key...

They cost about $90 buck a piece if you dont shop around and you can ask a tech savvy neighbor to put them in for you. The website below should be of help.

http://www.autopartswarehouse.com/mmp/ford~mustang~oxygen_sensor~parts.html

Good driving.

G

I suggest scannign your engine for knowed exaclty what fualt code are there?

chech gas cap

assuming you have brake lights and marker light, I would check the socket for voltage, both the contacts and probe the wire (Brown) for voltage...it could be a bad socket.... if no voltage, trace the "Bwn" wire back and keep probing til you find voltage, check the connector in the trunk on the LT/RT side also...hope this helps you...GL

sound like a lose wire.take dash back out and check the wires that goes to dash.wires could have move out of place when you removed the dash.

You need to have it scanned to see what code turned on the light. Check your gas cap, make sure it is tight.

they forgot to reset your light take it back and they will reset the light for you..