hiccuping/stalling while driving

[brolin1]

I have a 99 9-5 4 cyl. manual transmission 70,000 miles. As of last Friday, the engine hiccups/seizes momnetarily while driving (happens at a variety of speeds and randomly). The hiccup is more jarring in 1st and 2nd gears and less so in 5th gear. Happens for a split second and when it happens it seems like the occurences are clustered together. Fro example, on a 1/2 hour trip this morning it happened twice and about 15 minutes into the trip.
Any thoughts and suggestions on what is causing this are appreciated.

[brolin1]

Originally Posted by brolin1

I have a 99 9-5 4 cyl. manual transmission 70,000 miles. As of last Friday, the engine hiccups/seizes momnetarily while driving (happens at a variety of speeds and randomly). The hiccup is more jarring in 1st and 2nd gears and less so in 5th gear. Happens for a split second and when it happens it seems like the occurences are clustered together. Fro example, on a 1/2 hour trip this morning it happened twice and about 15 minutes into the trip.
Any thoughts and suggestions on what is causing this are appreciated.

UPDATE:

It turned out to be a crankshaft sensor. If you're having the same "symptoms" I'd have your mechanic check that first. If that's fine, then check then the throttle body and finally the DIC.