So my check engine light came on and threw 4 codes at me......

-It's running too rich
-It's running too lean
-something about a speed sensor? I don't even know what the hell a speed sensor is??
-and it's misfiring.


Any ideas/ and or solutions

 

your screwd, get tuned. lol

 

what are the codes exactly?

the p0171 lean code happens from time to time in modded LSJ's. its okay as long as it doesnt happen all the time.

speed sensor is exactly what its name is, a speed sensor. lol

 

lol get tuned with that 2.9...
why do ppl do that its not good

 

he is tuned guys and everyone always freaks out about IDC's on the 2.9 and 42's. IDC's are an inaccurate reading of injector capability. keep it under 20 milliseconds for the injector pulse width and they are not going static. ex: i am gm stage 2 on a 2.9. IDC=122% IPW=18.3msec

 

yea and the IDC's shouldnt be that high especially 122% ur injectors hate you lol

 

under 20msec for injector pulse width is what you aim for. i am at 18.3msec which is not going static.

 

ummm ok....what?! lol

 

I'm pretty sure the pulses are every 15 ms, and your engine is trying to cram 18ms worth of fuel in during 15ms. (18.3/15 = 1.22)

100% IDC is indeed static. Going over can't be good for them.