check engine light on...

ok my check engine light is on and i looked for codes and the led light on the ecu just stays on and it doesn't flash...and when i drive the car the check engine light goes off but sometimes it goes back on and i replaced one of the senosors on the back of the intake manifold and i don't know what seems to be the problem...any help would be good...thanks in advance...

usually a solid led on the ecu means bad ecu -

i would say check ur MAP Sensor hose's that run into the left side of your intake manifold.....

my engine light kept coming on and i finally figured out i had a crack in my manifold..... but then i replaced the manifold and it still comes on...


does your manifold have to vacum lines (right next to each other) on the left side of the manifold or one??? my old manifold had too had one and my new one has too.