Topic: Check Engine light

[want2wheel]

I have a 93 3.0 v6 that when at idle at startup the check engine light stays out, but when you drive it the light come on.  The engine runs smooth.  The only thing that I have noticed is that the rpm is around 1500.  It normaly is around 1000 rpm.  Thank You, Rob

[Yota Up]

Under the hood, open the black thing near the fender.  Jump the TE1 to E1 with a paperclip.  Turn all things off, put key in ON mode.  Count the number of times the light flashes and look it up as ECU codes/ EFI codes on google.

[BLACKDOG]

Under the hood, open the black thing near the fender.  Jump the TE1 to E1 with a paperclip.  Turn all things off, put key in ON mode.  Count the number of times the light flashes and look it up as ECU codes/ EFI codes on google.

by black thing he means the diagnostics box (about 1.5" x1") that is next to the engine bay fuse box on the passenger side fender. 

[want2wheel [OP]]

Thank You for the info, I will do it as soon as I get up tomorrow. 

[want2wheel [OP]]

Problem still there.  I cannot use my check engine light because the problem goes away when I turn the key off.  That is the light goes out and stays off for a while.  If I am going down the roadand the light being on, and turn the key off and back on it goes out.  What would cause a problem like that? 

[Duffil]

you have a short somewhere, I would think.

[want2wheel [OP]]

If it were a short, it may or may not go off with the key or reset while going down the road or trail.  Still looking.