ok so i changed the head gasket on this lude i just bought and when i reassembled everything it drove good till it hit opperating temp then i got a cel code 4 and 8, which is crank angle sensor and the tdc, i have not been able to find any links to where they are located but someone told me they were both in the dizzy, so im just curious if anyone knows something about this oh yah and its a h23 if that helps at all thanks

 

what year h23?

There are only two places they can be. In the distributor or bolted to the oil pump. Did you have a check engine light from the get go?

 

its a 93 si