Camel013
NAXJA Forum User
- Location
- raleigh nc
I did a bunch of tests with all the info I could find and I'm listing it below with as much detail as I can find so if anyone has this same scenario or some advice as to how to proceed next it would be much appreciated by all who come across this page.
Anyone have any ideas as to why I'm not getting any voltage at the Ignition coil?
- I had an erratic (fluctuating) idle that would want to die and would die sometimes unless I feathered the throttle.
- I checked with wd40 for any vacuum leak all around the intake
- No sign of an exhaust leak, audible or felt
- I had already replaced the IAC, but I kept the old one to have a spare to test with (the vehicle ran with the old one, albeit not great).
- I also have an autozone TPS installed (under a year old I think)
- So I replaced the upstream O2 sensor with a new NTK O2 sensor (23151) this morning and the jeep will not start afterwards.
- I then installed the old O2 sensor and the motor would still not start.
- I checked the CPS (which had just recently been replaced): had OL measure @ B,C connectors. which according to my research is proper
- Checked the ASD fuses and all the fuses in the PDB
- Checked ASD relay (see above: upper right relay)for power and had power on both ends with the key on.
- I have power in and out of PCM on the ASD circuit.
- no spark when testing with a spare spark plug on the block.
- I do not have power at the ignition coil.
- I did not check for fuel pressure since I do not have spark.
Anyone have any ideas as to why I'm not getting any voltage at the Ignition coil?