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Syracuse986 · 07-08-2019, 06:38 PM

Hello everyone I have a 1998 Porsche Boxster that is running rough and throwing a CEL for general misfire and misfire cylinder 4,5,6 all on bank 2. No other codes are throwing. The car seems to run fine when I am on the gas but as soon as it idles, I can feel it running rough (like it’s misfiring) and then occasionally it stalls out when idling. The rpm needle bounces between 600-800 rpm.

This forum is my last shot before I give in and drop it off at a dealership$$$$$

What I have done so far to try to fix the issue:
1. Spark plugs x6 (verified gap is correct)
2. Coil packs x6
3. Verified all coil pack connectors are secure
3. Cleaned the throttle body
4. Replaced the fuel filter
5. Replaced the MAF
6. Unplugged the MAF (recommended on other forums)

07-08-2019, 06:38 PM	#1
Syracuse986 Registered User Join Date: Sep 2016 Location: Ny Posts: 18	Rough idle sometimes stalls Hello everyone I have a 1998 Porsche Boxster that is running rough and throwing a CEL for general misfire and misfire cylinder 4,5,6 all on bank 2. No other codes are throwing. The car seems to run fine when I am on the gas but as soon as it idles, I can feel it running rough (like it’s misfiring) and then occasionally it stalls out when idling. The rpm needle bounces between 600-800 rpm. This forum is my last shot before I give in and drop it off at a dealership$$$$$ What I have done so far to try to fix the issue: 1. Spark plugs x6 (verified gap is correct) 2. Coil packs x6 3. Verified all coil pack connectors are secure 3. Cleaned the throttle body 4. Replaced the fuel filter 5. Replaced the MAF 6. Unplugged the MAF (recommended on other forums)