NONvtecLSteg

iTrader: (1)

Hey ht i have a gsr with LS crank and b16 pistons im running ls rod bearings and the oil squirters, stock head "tuned" with vafc2.....so it runs great pulls hard, but after i do a long pull like to 140.....i will be driving and get on it and it will be slow and rev limit me at 5k....im throwing codes 1336 and 1337 for the crank sensor idk why its plugged in and worked fine on my last motor any ideas? Anyone else have this prob also throwing codes for o2 sensor #2 but i thnk that is it

speedjunkie_g35

Get rid of the vafc and get proper engine management.

NONvtecLSteg

iTrader: (1)

Well it did it before the vafc but thanks i want you to know i agree but i have no momey and need vafc as the motor is too lean otherwise thanks for reply

speedjunkie_g35

Might try another crank sensor in that case. It could have worked prior but that doesnt guarantee that its working now.

loose connection for the 02? bad o2? need more info obd1,2a,2b?

NONvtecLSteg

iTrader: (1)

Its obd2b but does it go into a limp mode when cks is bad?

speedjunkie_g35

I honestly do know which cels will cause the ecu to go into limp mode