warning lights stay on briefly after engine start

[douglas]

1990 turbo supra battery discharge, taillight and brake warning lights remain on for a few mins after cold engine start, then all go out together. wondering if anyone has had this happen and what problem may be. thanks

 

[IJ.]

What happens if you bump the revs a little?

 

[douglas]

increase rpms no affect

 

[wizard_len]

Now having same problem; seems to be only when engine is cold; lights go out above roughly 2000 RPM. Checked battery and alternator. Both are fine. Any ideas? Thank you very much.

 

[jetjock]

^ How exactly did you test those items?

 

[grimreaper]

dude, we ran the car with out the battery and then with out the alternator, battery and alt.=100% :sarcasm:
Not directed at you op, unless of course this is the extent of your testing.

READ

 

[jetjock]

Lol...you had me there for a moment