Sudden poor performance with new cat - Saab 900 Bulletin Board - Saabnet.com
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Sudden poor performance with new cat
Posted by kenzos [Email] (more from kenzos) on Sat, 17 Jul 2010 12:38:34
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'92 900TC, Relatively new (3 years and 5k miles) AMM, AIC and O2 sensor. Recent tune, oil change, no known vacuum leaks, ran great but couldn't pass smog (high hydrocarbons at idle). Replaced cat with new Bosal unit. Car seemed to run fine for the 10 miles it took to warm it up and get it to the smog station. Passed smog, halleleulah. Then, accelerating hard (boost just to red) on to the freeway it starts seriously cutting out with anything more than gentle application of accelerator. I get off the freeway and the thing idles at a constant 1500 rpm. I check for blown off turbo plumbing and the usual vacuum leaks and find nothing. What up?
Connection with new cat or coincidence? Any ideas where to start?
posted by 99.187.220...
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