Can't seem to find the problem...

AmunRoo
Aurora Owner

Posts: 559

Can't seem to find the problem... Jul 17, 2021 17:04:58 GMT -6 via mobile AUROD X likes this

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Post by AmunRoo on Jul 17, 2021 17:04:58 GMT -6

So I have a 2001 4.0 with an intermittent misfire on cylinder 2. I changed the plug and made sure it was properly gapped. I changed the injector and put in a brand new one. And I replaced the coil pack with a known working good coil pack from my other Aurora. The problem went away but, it has now started misfiring on cylinder two all over again. It only happens at idle or when I'm at a complete stop and the car is in gear. It feels like a stumble. It kind of jars the car a little bit. I'm wondering if it's just a bad cylinder at this point.

Does anyone have any ideas as to what the issue might be. I've checked the long and short-term fuel terms and all that they are good.

Paulaurora Super Moderator Posts: 3,828 Staff Member	Can't seem to find the problem... Jul 17, 2021 17:44:17 GMT -6 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Paulaurora on Jul 17, 2021 17:44:17 GMT -6 you need to go to the shop so they can use a camera to look inside the cylinder . Might be bad wires/plug to the ignition module. or head gasket issue. WHat spark plug did u use?
	Own:2003 Aurora 4.0 3rd Owner! All options 145k Had: 1998GX 168,000 Intrigue-RIP total loss. 1999 Intrigue GLS 215,000 mil-Trade it in for Aurora 2001 Aurora 4.0 2nd owner! miles 22,000~170,700- Sold 2018 Volvo s90 Inscription. Paul.

AmunRoo Aurora Owner Posts: 559	Can't seem to find the problem... Jul 17, 2021 22:41:10 GMT -6 via mobile Paulaurora likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by AmunRoo on Jul 17, 2021 22:41:10 GMT -6 AC Delco double platinum

Paulaurora Super Moderator Posts: 3,828 Staff Member	Can't seem to find the problem... Jul 18, 2021 18:16:39 GMT -6 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Paulaurora on Jul 18, 2021 18:16:39 GMT -6 good once:) On my 3.5 there was a bad wire to the plug for the ignition module that caused issues. so check the wires.
	Last Edit: Jul 18, 2021 18:17:39 GMT -6 by Paulaurora Own:2003 Aurora 4.0 3rd Owner! All options 145k Had: 1998GX 168,000 Intrigue-RIP total loss. 1999 Intrigue GLS 215,000 mil-Trade it in for Aurora 2001 Aurora 4.0 2nd owner! miles 22,000~170,700- Sold 2018 Volvo s90 Inscription. Paul.

AmunRoo Aurora Owner Posts: 559	Can't seem to find the problem... Jul 19, 2021 0:56:20 GMT -6 via mobile Paulaurora and AUROD X like this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by AmunRoo on Jul 19, 2021 0:56:20 GMT -6 No wires on the Northstar. But, it ended up being a bad spark plugs boot... 🙄

Post by AmunRoo on Jul 17, 2021 17:04:58 GMT -6

Post by Paulaurora on Jul 17, 2021 17:44:17 GMT -6

Post by AmunRoo on Jul 17, 2021 22:41:10 GMT -6

Post by Paulaurora on Jul 18, 2021 18:16:39 GMT -6

Post by AmunRoo on Jul 19, 2021 0:56:20 GMT -6