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cardoctor71
cardoctor71, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 672
Experience:  ASE MasterCertified Technician with 35 years experience diagnosing and repairing import and domestic cars and trucks
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I have a 1999 Catera and just recently the car starts

Customer Question

I have a 1999 Catera and just recently the car starts misfiring around 2000 rpms.
JA: How many miles are on the car? Is it a steady misfire? Or random?
Customer: The car has 73,000 miles on it. It seem to start this when the vehicle comes to normal operating temperature.
JA: Are you fixing your Catera yourself? What have you tried so far?
Customer: I have a mechanic looking at the problem, but I don't feel is sure of what he has diagnosed. He thinks it may be the catatlyic converters.
JA: Anything else you want the mechanic to know before I connect you?
Customer: No
Submitted: 10 months ago.
Category: Cadillac
Expert:  cardoctor71 replied 10 months ago.

Before condemning the catalytic converters the mechanic should run a compression test, an injector kill test and rule out all other reasons for a misfire and pinpoint exactly which cylinder is misfiring and why. Please rate my service, i will continue to answer your questions until you are completely satisfied with my answers.

Expert:  cardoctor71 replied 10 months ago.

Sorry for the delay, I had a medical emergency, all is well now, Do you still need assistance, if not, kindly rate my previous answer.

Expert:  cardoctor71 replied 10 months ago.

Please RATE my service on the rating page,I will continue to answer your questions until you are completely satisfied with my answers.