» » »

Toyota Q&A

Ask Your Question

2001 Toyota Sienna Question: My van's front catalytic converter heats up and misfires after 30 minutes.

 

Question

elcheeko, 3.0L V6, Potwin, KS, December 18, 2013, 07:55
 Rookie

My front catalytic converter turns red hot and cylinders 2, 4, & 6 begin to misfire. The engine code reads misfire in the three cylinders. There is very little exhaust when the vehicle begins acting up. I have removed the front catalytic converter but the three cylinders continue to misfire (no where near as bad as it was before cat removal) and the engine codes still reads misfire in cylinders 2, 4, & 6. The spark plugs have been replaced. Any suggestions?

2 Answers
Flag This
  • Medium-star Best Answer
    pushrod December 18, 2013, 07:59
    Profile_thumbnail
     Master

    Sounds like excessive fuel is being burned in the cat. Possible injector/pressure regulator problem. Black smoke from exhaust?

    Flag This
  • Reply

    elcheeko, December 18, 2013, 08:03
     Rookie

    No black smoke. So, its now code 1354 which is the vvt and ocv? Is that expensive to repair?

    Reply
    Flag This
  • Answer #2

    lloyd37 December 18, 2013, 08:11
     Rookie

    happy holidays.at-1003 bayner road.(banier road.)Essex,baltimore,marylande,21221.e-mail-mickeymouse.montgomery40@gmail.com.fax.no.4102384119.says happy America.mrs.maggie mae Whittington.montgomery & children-miss.charlese ann,miss.lakisha ivenola,miss.anita ann,mr.kerry lee,mr.michael Lloyd Montgomery jrs,and husband-mr.michael Lloyd Montgomery sr.(duvall.)218843488/02/14/1974/(13.).3488.

    Flag This
  • Reply

    elcheeko, December 18, 2013, 16:12
     Rookie

    So now its code 1354 which is the vvt and ocb. Is that expensive to repair?

    Reply
    Flag This