2008 Mazda Rx-8 - Rough Idle - Help!! How To Reset An Air Control Valve Upgraded Vehicle

Author Dalbo 08 Jun 2026

Can drive it without any problems except from the idle I've been baffled by this car and i've been fighting. I've used an injector cleaner on one full tank and the problem seemed to disappear only to appear on the next drive.

2004 Mazda Rx8 Rough Idle and Stalls - 2CarPros

2008 Mazda Rx-8 - Rough Idle - Help!! How To Reset An Air Control Valve Upgraded Vehicle

After cleaning it the car began to have a rough idle and. It was the ignition coil for the. For the engine vibration, check the motor mounts

They have been known to collapse, and it's a cheap fix

For the rough ride, ensure the pressure isn't over 32psi, if it's still rough the best solution is to get rid of. The first code might be the one related to the rough idle as i believe it's triggered by either a faulty or a dirty sensor that leads the ecu to fiddle with the fuel mixture. I have a p0300 code (random multiple misfire code) Turn the ignition switch to the on position (engine off)

If the engine starts and runs, perform the following steps. I need some help here, i’m having some issues with my idle for some time now and is kind of rough especially when the car is fully warm up ( 185f in engine temp, 200 in oil temp) it feels like it will. [troubleshooting] car runs very rough at idle and shakes when revving, engine load at idle 50%, a/f ratio 15.0 and spikes to 20 when revved, very sudden symptoms update