Need some advice

[robles92]

What can be wrong with my 91 teggyit starts up fine in the mornings but then after it warms up and i turn it off i wont start at all i have to wait for the motor to cool down completely then she will start right up any ideas on what can be causing it ???

 

[djzachtyler]

o2 sensor would be my guess.

Replace it and see if the issue persists. reason it happens when it is warm is that the o2 doesn't start sending readings untilthe exhaust manifold reches operating temps. At that point if fould the air fuel ratio gets thrown off so badly it can create a "flooded" condiition where the car turns over and over and over and takes forever to get started if it starts at all.

You can find a Denso replacement o2 sensor for like 25 buck on fleabay... get that puppy replaced and report back.

 

[The Kev]

You might also have a busted therostat, might want tto check it too.