CATALYST OVERHEAT |
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Staehling
Newbie Joined: 04-April-2008 Status: Offline Points: 1 |
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Posted: 04-April-2008 at 21:56 |
Hi guys,
I have a 1991 850i. Recently, I've been getting the CATALYST OVERHEAT error on the OBC/MID, complete with tone/beep, immediately after starting the car. Happens regardless of cold/hot, and this is not the quick 2 second one that J-Spec owners see that disappears right away. The Euro/JSpec cars have after-cat temperature sensors, part numbers: 11 78 1 722 763, or 11 78 1 738 347. Don't want to throw parts at this, otherwise I would have replaced the sensors by now in hopes of it fixing it, but I would rather try and troubleshoot/diagnose this to make sure it's the sensors and not something else. Anyone ever deal with this? Info: 1991 J-Spec 850i, Automatic -Just passed emissions testing recently with great results -Air filters and sparkplugs(F8LCR) are new, will be doing caps+rotors soon, but since the error comes on instantly, I do not believe this to be an ignition/rich issue -Behaves the exact same way with both sensors plugged in, both unplugged, 1 unplugged, other unplugged. thanks! -Andrew |
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