986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Engine Trouble. Would love some help. AOS?

EJ_2001_986_S · 07-27-2014, 11:05 AM

Took the car to Autozone and had them read the codes. I know it's not a Porsche scanner, but here's what was there.

PO300 - Random Misfire Detected
PO303 - Cylinder 3 misfire condition
PO305 - Cylinder 5 misfire condition

They cleared the codes and I drove the 5 miles back home without the CEL coming back, but it still sounds like it's misfiring with the engine at idle. I avoided coasting and kept the revs up when stopped. I'll do some more searching to see what's already been posted on these 3 codes, but please chime in if you can help.

07-27-2014, 11:05 AM	#3
EJ_2001_986_S Registered User Join Date: Jan 2008 Location: Greenville, SC Posts: 35	OBD Codes Took the car to Autozone and had them read the codes. I know it's not a Porsche scanner, but here's what was there. PO300 - Random Misfire Detected PO303 - Cylinder 3 misfire condition PO305 - Cylinder 5 misfire condition They cleared the codes and I drove the 5 miles back home without the CEL coming back, but it still sounds like it's misfiring with the engine at idle. I avoided coasting and kept the revs up when stopped. I'll do some more searching to see what's already been posted on these 3 codes, but please chime in if you can help.