Hmmm perhaps it is the ignition module that is failing me. I did what you said a few days ago (while the car was running rough) and removing a lead seemed to make no difference. Naturally, I went ahead and replaced plugs, leads, distributor cap. But the problem is still there.
Is a failing ignition module a big deal? ie a new ecu? or just a component replacement?
Hi again, if that made no difference then there were no faulty components, I hoped you replaced them as you were doing a service
I asked the same question about the ignition module not so long ago
and i was told that it is part of the ecu.
Have you tried to eliminate the lambda sensor yet, if that makes no difference i would try another ecu.
I have been chasing a running high co for 3 years and think I have finally got to the bottom of it. I replaced, plugs leads, rotor arm, dizzy cap, coil, AFM, ECU, checked compression and finally fuel pressure.
Hopefully yours will be as simple as an ECU, AFM or lambda sensor