P0324 no knocking

Philip Chandler · March 9, 2020

Current truck, bought at 60k miles, currently have 95, whipple 2.9 installed at 76k , current issue p0324. No other codes, loss of power, garbage gas mileage, suspect either knock sensors or pcm as that's the only thing I can find on this topic. I have zero noise coming from the engine and still achieve 13 psi from the blower. Not losing coolant, or oil. Loss of power obviously coming from the car pulling timing as it's in a safe mode. Just need advice on whether or not it's going to be the pcm or the knock sensors themselves. Any advice would be appreciated.

Btw the truck is strictly 93 octane.

CamGTP · March 10, 2020

Having a PCM issue is the worst case issue and normally is highly unlikely. They typically don't just randomly fail like that and give you one issue like this code. You'd have more systems errors if the computer took a dump.

I would inspect your knock sensors, check the connectors and wiring. Make sure they are getting the correct voltage at the plug etc etc.

Philip Chandler · March 10, 2020

On 3/9/2020 at 9:53 PM, CamGTP said:

Having a PCM issue is the worst case issue and normally is highly unlikely. They typically don't just randomly fail like that and give you one issue like this code. You'd have more systems errors if the computer took a dump.

I would inspect your knock sensors, check the connectors and wiring. Make sure they are getting the correct voltage at the plug etc etc.

Went ahead and ordered 2 knock sensors will be here in the morning. Thanks for the reply, once you start searching you can kind of get off track.

03-10 Update as there really isnt alot of information on this code for our trucks,

Knock sensor did nothing to solve the issue, from what I was reading a bad pcm will cause this too, however I went ahead and changed my plugs out and found one that was loose . Went ahead and swapped out all plugs and she's back to running like a train. I was only getting the p0324 code no misfire codes or anything.

Edited March 11, 2020 by Philip Chandler

RET. NCO · March 11, 2020

Ignition system was my guess or the timing was off. I 'm glad you got it fixed the torque spec on the plugs are 25 Ft/Lbs. or 300 In/Lbs. just in case!