P0340 and delayed start after AFM delete kit - help please - solved!
I'm a Ford specialist, so GM stuff is not my norm. Here at our shop, we've done two Texas Speed AFM/VVT delete kits, and both have had the same issue.
Both trucks set a P0340 cam signal code, as soon as truck is started. Both trucks also have a delayed start on crank - about 4-5 seconds of cranking before the motor will fire. Fuel pressure has been checked and I see no issue there. To be honest, I do not know for sure that the delayed start is related to the AFM delete kit, but this is the customer's complaint.
Both TSP delete kits come with a new timing cover, new cam sensor, and new jumper harness from the engine harness to the cam sensor. Both harnesses had the wrong plug end on them and did not match the cam sensor they include with the kit, which is the same sensor the truck originally had. I had to swap the plugs from the original harness over. I have verified that the wires are in the correct order in the plug.
Checking crank and cam rpm signals with my Snap On scanner, I get no cam reading with the truck running. The truck runs perfectly fine, aside from the mentioned delayed start. I have checked the three wires to the cam sensor, both at the sensor and at the ECM. I have 5 volts on the ref feed, ground, and 1.9 volts return signal back to the ECM. As far as I can see, the ECM should be getting a cam reading.
Does anyone have any ideas on either the P0340 code, and/or the delayed start?
Any help would be greatly appreciated! :)
Sal
