Hi... I am getting these fault codes from diagnostics P0352, P2504, P0353, P0351 even though I just changed all the ignition parts after the CEL came on.

My car is a 2004 RX8 with a mileage of 72,000km. The car loses power especially when climbing a steep road and have this constant croaking sound that gets louder when i try to accelerate.

Please what do you advise i do?

 

Check all of the connections and wires between the ECU and the coils, looking for any places that could be shorting the circuit to the coils. While you're in there, test each of the coils to make sure that none of the new coils are defective. Also check the battery terminals, and clean/tighten them up as necessary.

It appears that this is the result of a electrical issue, and therefore is probably going to be a slow and painstaking process to track down and solve.

 

Thanks for the input man. Will do and report the outcome

 

Everybody please help. I have changed all the ignition parts, MAF sensor, MAF, gutted my CAT and the car still loses power when climbing a steep with a bass drum sounds that gets worse until it stops. When i redline it, the exhaust clears with a sound like a man clearing his throat, then the car moves again normally. i have taken it for diagnostics thrice and theres no more fault codes.

At this juncture i don't know what else to do. i am beginning to regret buying this car. If its possible to replace the rotary engine with a piston engine i would do it without thinking twice.

 

It's possible to have a faulty new coil, especially if they're from ebay. Not saying that's the case, but it wouldn't be the first time. When you say 'all ignition parts' what specifically was changed?

Let's go step by step. Since we're not near your car, we'll need more information to help you. Can you get a video of the bass drum sound?
Are there any other symptoms, like poor fuel economy, low power on level ground, etc?

What condition was the cat in when you gutted it? What could be happening is pieces of cat lodged further down the exhaust pipe, if the cat had come apart before you gutted it.