Germanautosupply.com $45 Free Shipping. Done.
I've ordered three from them so far. One went in my Graphite when it died at a stoplight at 98,000 or so.
Second one went to someone at a Dragon meet.

The common belief is that they get sensitive to heat. Once cooled off, the car runs. But I've also heard that one guy removed it, wiped it clean and put it back on and the car ran. I suppose the pickup is sensitive and maybe metal shavings, etc. were confusing it.

In any event, I'd say order one and put it in. Keep the old one as a spare as George suggested.