I came across your site as I was trying to learn how to solve a problem. I am the original owner of the van listed above. I am looking to solve an issue with the car "burning" too much oil and determining the true cause of a P0420 engine code (Catalyst System below efficiency). I am attempting to resolve these issue for as little money as possible and I am willing to do as much work as I can myself. I am in California and have learned that the catalytic converter for my car appears to be a "dealer only" part. So I want to verify that it is indeed bad. I have read that there are other possible causes. A quick history is below.
A few years ago we noticed a problem where the car would run low on oil if we missed an oil change. At the time I took it into a mechanic and we found old oil on the bottom of the car. He cleaned it up so we could try to determine if there was a visible leak. Over the next couple of months we never found a visible sign of the leak. I also visited the dealer who determined that the front and rear engine mounts had leaked. Based on that finding I believe I have an oil leak somewhere inside the engine which is causing the car to burn excess oil.
I believe the internal leak may be the source of the P0420 code. I am looking for some guidance on the best process to solve these two problems. I want to avoid simply replacing the cat but not resolving the cause of the problem.
Please let me know your thoughts or if you have any additional questions. Thank you.
have the same problem?
Monday, January 23rd, 2017 AT 11:48 AM