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My friend had the same problem .His engine would overheat,lose power,cut out and so on.He changed the catalytic convertor and the car bounced back to normal.I have heard stories on the Lanos where the rear muffler is a culprit too. I don't get the overheating problem, I'm just getting the jumpy pow...

Anybody else out there with suggestions please for my original post?

I've replaced the rear muffler, and the car seems a lot better now, except I am still getting jumpy power. So maybe the CAT is clogged a bit? Is there anyway of unclogging it (nice long drive?), or do I have to get a new one. Daniela, maybe yours is a clogged CAT as well? I'm wondering if driving ar...

sounds like catalytic convertor to me Hope not, I've had that before and remember it being expensive. I remember the cat as being a distinct sort of rattling as well, which I'm not getting with this problem. Thanks for the suggestion. The only rattling you get from the cat is if the spot welds on t...

daewooluvr wrote:sounds like catalytic convertor to me

Hope not, I've had that before and remember it being expensive. I remember the cat as being a distinct sort of rattling as well, which I'm not getting with this problem.

Thanks for the suggestion.

Hi, I'm fresh to this forum as well as to mechanics in general, though I am a generally handy sort of person. My rear muffler is now rusted out completely (the exhaust is now detached from the front entrance to the muffler), and I've noticed the performance/power of the car getting slowly worse (on ...