Occasional misfire codes

Discussion in 'Generation 4 - Maintenance & Troubleshooting' started by 40BelowSummer, Mar 14, 2019 at 7:30 PM.

  1. 40BelowSummer

    40BelowSummer SHO Member

    Joined:
    Dec 28, 2003
    Messages:
    1,805
    Likes Received:
    52
    Gender:
    Male
    Occupation:
    IT Director
    Location:
    Puerto Rico
    Hey guys,

    So a couple months back, my 2010 suddenly started running rough on the highway with a CEL.
    I pulled over checked the codes and was getting a misfire in cylinder 3.
    I babied it to my destination and after that drive it actually ran fine until a similar issue yesterday.

    Yesterday, the CEL came on and it started running rough, so i immediately checked the codes and this time it's a misfire in a different cylinder (6) - also threw a P0150 (O2 sensor circuit) this time. ..

    Well it's running good and fine again, but I need to figure out what's going on.
    It greats great 99% of the time and I changed the plugs just before I moved about 2000 miles ago.

    Unfortunately, I don't have tools or a garage at this time as I just moved (with my car!) to Puerto Rico.
    Anything come to mind that might be so sporadic and result in a misfire in what seems to be different cylinders a couple months apart?

    Also, can someone tell me the cylinder order/locations?

    Gracias
     
  2. SHOdded

    SHOdded SHO Member Supporting Member

    Joined:
    Dec 25, 2011
    Messages:
    7,545
    Likes Received:
    3,230
    Location:
    Maryland
    Left to Right, standing in front of the car:
    Firewall Side/Bank 1
    1 - 2 - 3
    Radiator Side/Bank 2
    4-5-6

    Could be it needs new oxygen sensors, could be a vacuum leak, don't think it is a valve cover gasket leak. Definitely would pull plugs and look, and do compression test while the plugs are out.

    The battery has solid CCAs?
     

Share This Page

If you wish to help keep SHOforum running, please click the donation button below