clcam97

I have bolt ons and 503 cam in my 97 lt1. When I go WOT the fuel shuts off for a split second usually at higher rpms. Will these codes cause my car to do that?

Guest47904

The 134 is a problem with the signal from the front driver side O2. It will cause the PCM to go into open loop. While open loop is not as good as closed loop, it will not cause what you described. Are you actually monitoring fuel pressure?

The 336 is the CKP. No action will be taken. Before changing out the crank sensor, check the wiring for the presence of 12 volts and ground from the pink to the pink/black wire and that the yellow signal wire is uninterrupted from the sensor to the first pin of the Red PCM connector. check the sensor for contamination or being loose.

As far as your pressure problem. Check the connector for the fuel pump located behind the back seat on the outside of the car. Easy to get to if you remove the left rear wheel. If you don't find anything there, you may want to monitor the voltage going to the pump while you do a test run.

Injuneer

Check the rubber inlet elbow to make sure its not torn, and that its firmly attached to the throttle body.