Experiencing a P0341 code on your 2003 Chevy 1500 right after replacing the distributor can be frustrating. This code, indicating a “Camshaft Position Sensor Circuit Range/Performance” issue, often surfaces when the distributor or related components are disturbed. Let’s delve into why this might be happening and how to troubleshoot it effectively.
You’ve recently tackled some maintenance on your truck, including plugs, wires, intake gaskets, and crucially, the distributor. It’s understandable to feel like you’re chasing gremlins when new issues arise post-repair. Symptoms like a rough idle, reduced power, and extended cranking times are definitely concerning. The fact that you’ve addressed lean bank codes already suggests you’re on the right track, but this P0341 code points us in a specific direction – the camshaft position sensor and timing.
Your observation about the rotor not aligning with TDC marks after the intake gasket job is a significant clue. Coupled with the new P0341 code after the distributor change, timing becomes a prime suspect. While a faulty cam sensor is possible, especially with aftermarket parts, the timing chain or distributor installation itself are more likely culprits in this scenario. A stretched or jumped timing chain can definitely throw off the relationship between the crankshaft and camshaft, leading to a P0341 code.
To begin diagnosing this, start with the basics. Double-check the distributor installation. Was it properly aligned during installation? Many distributors need to be “stabbed” in the correct orientation to ensure proper timing. Refer to your Chevy 1500 service manual for the precise procedure. Next, a visual inspection of the timing chain might be in order, although this can be more involved. Listen for any unusual noises from the timing chain area, which could indicate wear or slack.
While the new distributor came with a pre-installed cam sensor, it’s wise not to completely rule it out. However, focus first on verifying the mechanical timing and distributor alignment. If those check out, then consider further testing of the cam sensor and its wiring. Remember, addressing a P0341 code after distributor replacement often comes down to ensuring the mechanical timing is correct and all related components are functioning in sync.
