I have a D16z6 with a P28, VAFC, T25 and DSM 440's.
I was trying to tune my VAFC last night and all of a sudden it the ECU went into LIMP mode and wouldn't rev past like 2500. In a FAQ I read, it mentions that the ECU will throw a code if the MAP signal reaches 3.1volts. My P28 all of a sudden started throwing a code 4 which is Crankshaft position sensor. Which is complete BS because the car ran perfect then it just threw it for no reason. My MAP sensor is pulling vaccuum from the back of my intake manifold, could this be a problem? Should I install 2 or 3 check valves or something? Any ideas why my P28 would just go into LIMP?
Thanks guys!

 

BUMP

 

Anyone have any idea why it would go into limp mode?

 

i had the same problem... i went to a mechanic and everything no one in all of miami could figure out what was wrong with my car. i had the same code too. crank position sensor. i chnged it. nothing i changed the dizzy. noting then i thought it was the ecu.... nothing till finnally 4 months later i said expletive it i changed the engine wiring harness... all is good now. hope this helps

 

did ur ecu fuse blow?

 

Accually get this... The code 4, Crank postion sensor went away today. I had a buddy come over and tune my VAFC and get the car to run right and the code went away.... I dont know.

Lately I have been finding out that my car runs on Hopes and Dreams....