Cadillac DeVille Problem Report

Cadillac DeVille Check Engine Light on Due to Faulty Catalytic Conveter

(28 reports)

Failure of the catalytic converter can result in illumination of the Check Engine Light.

Check Engine Light on due to catalytic converter -
Right after I bought the car the check engine light came on so I am not sure when it actually started. I bought it second hand. i have not fixed it. -
Ruff idle shinning sound vibration miss fire changed coil pack and spark plugs same problem persists -
Check engine light came on and coded that it was an issue with the Catalytic Converter. Totally sucks. -
Cat failure. Replaced Cat and less than 2 months later the Cat failed again -
need new catalytic converter -
Insalled Walker catalytic converter, $128.00 on Ebay. 6 weeks ago...still good -
I had light on CHECK ENGIN went to local Cadillac Dealer and was informed it was the CAT.Con. and I required a new one @ 3667.00 plus labour so I went to a well known muffler shop here in Kelowna,B.C. Canada and had a generic one installed for 350.00 inc. tax.labour and productand it runs just fine now / I was an un:suspecting buyer it had been a taxi in Culver city Ca. sold to a cab. in Nevada / and mills were rolled back to 50.000 miles/ I got all this info after I bought it from car fax ?? / I paid 7200.00 and spent about 3000.00 but it runs like a charm now / but get a used car checked befor you buy I never would have bought a used taxi/limo. -
Just out of the 6 year / 100K certified warranty. It cost me over $1000.00 to repair. I was told this is because engine oil consumptiom burns them out. -
replaced catalytic converter a few days latter light came on again. replaced sensor, light came on again. mechanic said needs to be programed. -
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