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Originally Posted by Brucelee
Believe it or not, I had a Z3 that did this and it turned out to be a bad cat!
Weird but true. Remote but keep it in mind. My money is on the MAF.
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Hi,
It's not so weird at all. The Ceramic Matrix inside the Cat gets brittle and can collapse restricting or completely blocking the exhaust. I had this happen once in my Esprit 25 mi. away from home. Had to limp it back at 15-20MPH. Jamming a metal rod inside the tailpipe loosened all the ceramic which then just fell out. It worked perfectly until the new Cat arrived...
Happy Motoring!... Jim'99