Good Evening john t, if you have replaced those items and the wiring and plugs all have good integrity it sounds rather ominous for the computer.can anyone tell me why i have no spark i have replace the crank sensor and dist
The plugs/wires are all brand new, new cap and rotor as well. I am not experiencing any of the symptoms you described either. I have an OBD1 code 02. According to this website: http://homepage.ntlworld.com/mx6-uk/malf/malfcode.htmGood Evening dajester2007, From my experience whenever a distributor has failure, especially those that have the coil inside them, it was associated with either defective spark plug leads, insulators or enormously gapped worn plugs. (or a combination of them all)
Disconnecting spark plug leads and running an engine can also cause this problem.
What I suspect happens is that the high voltage either arcs internally in the coil reflecting effect into the driving circuit or the coil internally develops winding problems through arcing and excessively loads the drive circuit. (usually contained inside the distributor)
The symptom is commonly an erratic miss at idle for no apparent reason and can also be erratic accelleration under heavy load but has less effect when the throttle is eased.
You will notice that it is recommended that spark plug leads be routinely replaced periodically.
It can be a real nuisance to try to troubleshoot, and dismantling one of those distributors is not an option.