» » »

Buick Q&A

Ask Your Question

1994 Buick Regal Question: replacing catalytic converter

 

Question

JCO31, 3.8L V6, San Francisco, CA, February 12, 2011, 11:43
 Rookie

I have a 1994 Buick Olds Royale 88. I replaced the catalytic converter, now when I start the car it gets red hot. Did I replace it wrong? How would I install the catalytic converter?

2 Answers
Flag This
  • Medium-star Best Answer
    Hal... (see my shops), February 12, 2011, 18:38
    Profile_thumbnail
     Master

    You're getting too much fuel. You need to check fuel trim immediately and stop driving the car until you fix it.

    Reply
    Flag This
  • Answer #2

    2011charlie April 25, 2011, 19:04
     Rookie

    catalytic damage may have been the result of the problem. I'm trying to resolve the same issue, three things are possible causes, timing (late igniting fuel air mixture shooting flames out on the exhaust stroke), too lean a mixture (to much oxygen verses fuel) or too rich (more fuel than oxygen in the mixture) ... I'm concentrating on the timing, presently I've taken waveforms (cam/crank signal) from a good engine for proper timing at idle and 2000 rpm (it only gets hot at high rpms) to compare to the problem engine. e-mail me at charliesauto@bellsouth .net .... April 25-2011 today and will tell u my results. I did replace the computer since it did not take over the timing advance after start up from the ignition module (it did not keep the 5 volts applied on the by pass switch in the module) .... I'm close ...

    Flag This
  • Reply

    Visitor, May 27, 2011, 05:34

    thanks for the help! I have yet to fix it, I kind of put it aside til just a couple days ago. I hope you figured it out.

    Reply
    Flag This