So i keep getting this code 3 everytime my car starts up cold.
I've tried changing ecu's to known good ones, 4 different map senors that are good as well.

I'm at my whits end.

I changed the o2 this morning thinking maybe that could potentially fix that.
I changed all the vacuum hoses as well thinking maybe there was a leak.
I can't find any. The sensor plug was also checked for continuity and works fine.

After the car heats up and I start it again at a light or stop sign, it makes the code go away and runs normal.

WHAT DO I DO?


I have an odb0 LS

 

bump

 

):

 

code 3 is the map sensor, try a known working one and see what happens even if yours reads that it is working just try it and see what happens

 

I've tried 4 different ones

 

need halp

 

Code 3 is an electrical problem in the MAP sensor circuit. Start by voltage and Ohm testing the three wires.