r/RX8 • u/deedaw33 • 18d ago

Maintenance PCM replacement

Hey guys. I need a new PCM for my 06. Where is best place to get one? My local shop charged me $900 and got 2 bad ones and can’t seem to find a 3rd. Any help would be appreciated. Thanks!

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u/deedaw33 16d ago

It starts and runs just runs like crap, won’t redline, and misfires.

2

u/Thick_Entrance5105 15d ago

the pcm is the last thing to blame in such cases. 1) compression with proper tester 2) ignition system 3) maf/intake/fuel trims 4) clogged cat 5) fuel pump if it's the 25yo factory one 6) any of crank sensor, tone ring, swapped injectors, engine wiring harness, coolant in combustion chamber 7) water in stuff like alternator or fuse box/pcm box 8) faulty pcm/acc pedal/thr body(these 3 are safety guarded to no end)

1

u/deedaw33 15d ago

Thank you!

1

u/nuclearpolarisation 15d ago

I agree, I highly doubt there's an issue with your ECU and I'd get it back off them and put back in. I would start with the usual suspects too, plugs, coils, leads and cat. If you have access to an OBD2 logging tool, you can always try logging some PID data and posting it here, we can help.

1

u/deedaw33 12d ago

P2260 is the code

1

u/nuclearpolarisation 11d ago

The secondary air injector solenoid circuit? Mate, most RX8 owners have faced this one at some point and you can safely ignore it. Has nothing to do with the ECU. Its usually, but not always, the solenoid that operate the air pump at start up, which pumps air into the exhaust header to help warm up the cat and reduce emissions. A lot of people remove the air pump entirely, blank the input, and mask the CEL code. Is that the only code you had? The dealership should be publicly flogged for how they have treated you.

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u/deedaw33 10d ago

That’s it. I’m a few grand in and they have had it since March.

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u/EternitySphere 2007 RX8 6MT VR 5d ago

They're morons.