p0343 with new ls2 install
Thread Starter
Instructor
Joined: Jun 2010
Posts: 162
Likes: 0
p0343 with new ls2 install
Guys is there a difference in way the pcm counts for the cams on a ls1 vs ls2. I am thinking of how the cranks have a 24x for the ls1 and a 58x for the ls2. I have a P0343 code but I am sure the bolts are tight since I just installed them. I even took extra care to loctite them because I know the can loosen over time. Any suggestions would be great.
Tech Contributor
Joined: Jan 2007
Posts: 19,420
Likes: 1,146
From: Dyer, IN
Guys is there a difference in way the pcm counts for the cams on a ls1 vs ls2. I am thinking of how the cranks have a 24x for the ls1 and a 58x for the ls2. I have a P0343 code but I am sure the bolts are tight since I just installed them. I even took extra care to loctite them because I know the can loosen over time. Any suggestions would be great.
1) Your adapter harness is not pinned up correctly(very common)
2) You have a 4x cam gear, and your PCM wants to see a 1x
Thread Starter
Instructor
Joined: Jun 2010
Posts: 162
Likes: 0
Lucky
If I have the wrong cam gear can this be corrected with software such as hp tuners. Also I was talking to the owner of the car about the harness possibly being the problem. Thanks for your quick response.
If I have the wrong cam gear can this be corrected with software such as hp tuners. Also I was talking to the owner of the car about the harness possibly being the problem. Thanks for your quick response.
Tech Contributor
Joined: Jan 2007
Posts: 19,420
Likes: 1,146
From: Dyer, IN
Thread Starter
Instructor
Joined: Jun 2010
Posts: 162
Likes: 0
Lucky Thanks for you help with this problem. Just so everyone knows what fixed the car.
1. Wire harness was not correct. I had to swap the outside wires.
2. After fixing the harness the car still throw the code and was hard to start. Checked sensor and found it was shorted. I replaced the sensor and we are good to go.
1. Wire harness was not correct. I had to swap the outside wires.
2. After fixing the harness the car still throw the code and was hard to start. Checked sensor and found it was shorted. I replaced the sensor and we are good to go.
Tech Contributor
Joined: Jan 2007
Posts: 19,420
Likes: 1,146
From: Dyer, IN
Lucky Thanks for you help with this problem. Just so everyone knows what fixed the car.
1. Wire harness was not correct. I had to swap the outside wires.
2. After fixing the harness the car still throw the code and was hard to start. Checked sensor and found it was shorted. I replaced the sensor and we are good to go.
1. Wire harness was not correct. I had to swap the outside wires.
2. After fixing the harness the car still throw the code and was hard to start. Checked sensor and found it was shorted. I replaced the sensor and we are good to go.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
