Mechanics

I HAVE A 4X4 V6 ENGINE LIGTHS WITH CODES P0171 AND P0174 CHAGE THE OX SENSORS BUT IF I DONT WARMER UP THE ENGINE FOR 15 MINUTES THE CHECK ENGINE COME BACK WHEN I WARMER UP THE CAR IN THE MORNNIRG COLD TEMP.THE CAR STARTER TO ROCKING LI

2000 Ford Explorer • 140,000 miles

My check engine come and I change already the two front oxigen sensor and the check engine come back if idont warmer up the car for 15 minutes or more
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Enrique morado
March 21, 2012.



Possible intake gaskets leak.

Tiny
Fixitmr
Mar 21, 2012.