The bottom end of the S52 was rebuilt. I have been on the journey of breaking it in. During this event described below the engine had 350 miles on it.
Last night when driving the car I gave it ~50-60% wot as I was merging onto the highway. Out of nowhere the CEL came on but there was no change in performance or how the car was driving. I drove the car 30 miles to get the CEL scanned. During the trip the car drove fine. Below were the codes.
P0443 Evap Emission System (Purge Control Valve Circuit)
P1525 Camshaft Position Actuuator (Control Open Circuit Bank 1)
P0335 Crankshaft Position Sensor (A Circuit)
P0340 Camshaft Position Sensor (A Circuit)
P0111 Intake Air Temp Sensor 1 (Out of Range)
From what I read a car with bad camshaft/crackshaft sensors will be extremely difficult to start, have a horrible idle, and will perform sluggish. My car did not do anything of the sort.
I cleared codes to see if I could repeat the senario. I did this to help determine if the sensors were actually bad (i.e. to see if CEL would re-appear) verus through a few hundred dollars on sensors that may not have failed yet. The car drove fine.
Is this a common problem where the sensors tripped for no reason but are not actually bad?
Thanks.
Codes should be treated as a guide to whats wrong, my experience is that a fault in the system may be either side of the system with a sensor upsetting other sensors and setting codes. Your codes would lead me to do this, P0443, check the gas cap is tight and the cap seal is in good condition and seals ok.
Reset all codes and see if they return before spending out on sensors of oem quality, don't go with cheap pattern parts stick to well known makes.
P1525, P0335, P0340 Before replacing take them out and clean them and their connections,check the wiring is in good order.
If these codes return then try replacing them, Camshaft sensors are a regular problem on these cars given their age now.
P0111 clean the sensor in the air box, check condition of the air filter replace if dirty. Some good youtube videos on checking sensors using a volt meter and a wrench.
You have five open circuit codes, all of which are near/under the intake manifold. This points towards a common electrical connection, power or ground. Since you just had the motor out, check the connectors near the fuse box. Also check the ground connection on the right strut tower. The engine management is the one towards the rear. Since some of the components are +12 driven and some +5, I would suspect those two items before looking to fuses and relays. The gas caps on these cars are unpowered, so I see no reason to look there.
/.randy
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