[lornarae]

why dose my check engine light go on ,then go's off??? 96 mustang v6 3.8

[GTRaptor]

Lorna, you need to take it to a shop and have the codes scanned from the computer, i beleive Autozone can do this too.
You have a problem somewhere, the check engine is the way to tell you to "CHECK THE ENGINE"

[crazycarnut]

whats it doin when the light comes on?

[lornarae]

Thank you . I did this and they said it was EVAP PURGE VALVE MALFUNCTION. & they put the codes in so the lite went out .Well after $85 & two day it was back on .well when I call them back there they said come back & we will do it some more to see what it was and $85 more I say no way..It been on & off for about two years . Some time for weeks & some times 60 days.I would like to get it fix.

[lornarae]

Originally posted by crazycarnut
whats it doin when the light comes on?

It ok It the same as when it's off!!!SO WHY'S IT ON??

[Fordgazm]

You have something setting off a code . The sensors tell the computer whats going on with the engine , If the computer dont like what it's hearing , it turns the check engine light on . Depending on how mechanically inclined you are , and if you have some basic tools , then you can go to the auto parts store and buy a code scanner for about 30 dollars . Then you just plug it in and follow the instructions and it will tell you what part is causing the check engine light to come on . Every time the check engine light comes on the computer stores a code . You can pull the codes any time you see the light come on . It's a pretty handy little tool . Even if you dont want to repair it yourself , you'll at least have a good idea of what the problem is when you take it to a shop .