Engine Stalls

[Joe Tracker]

the O2 uses 12vdc power.
and if that grounds out the ECU goes dead. and may not blow the fuse
did you look at all 3 fuse to the ECU and make sure the PO didnt put 30 amp fuses there to hid the o2 shorts.
seems its just more of the 10 things seen on all old cars,

i bet spark cuts out. I bet you,
I also bet it intermittent , and restarts work every time, do they? restarts, after the knife edge stall.
if not check spark now, dead, then add test fuel if sparks good, (spary fuel in to mAF input port , if there is a IAT sensor on the filter box as most have, use that pulled to spray fuel.
id bet its not flooding out, id stall it in the drive way (possible?) and check spark tips for soaked in fuel....

Using my owners manual I could not find any ECU specific fuses to replace.

I did find and replace the following fuses:

1. "IG" - interior fuse block - O2Sensor Heater, Cruise Control, Ignition Coil, Meter, G sensor.
2. "Electronic Fuel Injection System" - engine compartment fuse block.
3. "All electrical loads" - engine compartment fuse block.

All fuses appear to be to spec amperages.

Where can I find the location of the ECU/PCM grounds? I found only two grounds in the engine compartment and both were tight.

1. One on the firewall near the battery - appeared to be for the battery, engine compartment fuse block, and about everything else.
2. One on the center firewall - appeared to be go into the cable bundle that connected to the Camshaft position sensor (I also cleaned the connector to the CPS and CPS ground to the engine).

I looked for a ECU ground, but its too tight under the passenger side dash. I will have to dismount the ECU/PCM to see anything.

The engine stalls have become less frequent and intense. They are now more brief, sharp hesitations (over and done with before you can react with the tach briefly dropping). After driving from 34 to 43 minutes, however, you still get the full stall (tach to zero) and must pull over. The engine will not immediately restart. You must wait three or so minutes. Thereafter the brief sharp stalls are more frequent. Perhaps the Techron is progressively working?

I also replaced the spark plugs. I tried to paste an image here and failed. The plug threads appeared oily/wet, but the tips/electrodes were dry. (I have new wires on order).

Thanks,

Joe Tracker