i got a no. 9 code on my teg. mechanic says it is tdc sensor. After search i found no. 9 is no #1 cyl. Is he wrong? Isn't there a separate code for the tdc sensor?

here is the history of events that led to this.

1. car was running fine, distributor gave out.

2. replaced dist. and had mech. set timing.

3. CE light comes on and car has a hicup at 3200 rpms.

4. had mech double check timing and changed plugs/wires/new cap and rotor came with distributor.

what could it be?

julio