00 Firebird, No spark on R side coils
04-06-2014, 05:42 PM
#1
00 Firebird, No spark on R side coils Car was running fine. Was raining in morning while driving. Drove for 30 minutes to location. Let sit for 3 hrs. Drove away and about 1/2 mile started missing bad. Arrived home and found No Spark on R side coils. Tried > ECM > Coils ( that were functioning fine ) , no blown fuse, No codes relating to Coils or misfire ..
No loose grounds that I can see.
Any ideas ?
No loose grounds that I can see.
Any ideas ?
04-06-2014, 08:07 PM
#2
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Sounds like you should be thoroughly inspecting the wire harness from the ECm to the coils. IIRC the coil banks are on 2 different circuits, right and left, so if the fuse is good, you'll need to make sure power is getting to the coils/ECM. Doesn't sound like a quick fix, just need to start inspecting wiring for damage or terminals for poor connection.
04-13-2014, 12:03 PM
#4
Ohmed out the wires going to the R coil pack and all seems good except, Pin A. What is the function of Pin A as it is not listed on the ECM printout I have. ? I thought it was a ground, but in checking pin A on the left side while engine was running ( on 4 cyl ) it read 64 ohms ? Is this a ground back through the ECM ?
04-17-2014, 08:24 PM
#5
Last time I checked voltage and ohms on all wires I had 12V on the connector that powers the coil pack. Today, I had NO voltage on the power wire to the coil pack. Car had ABS deleted and one of the brake lines had rubbed the power wire to the R coil pack in half ! Yet did not blow ANY fuses ? Uuurrrr !! Oh well, got it.
04-18-2014, 02:16 PM
#6
Great! I been keeping an eye on this thread, but you have seem to cover ever point.
One time, I couldn't get rid of a PO200 code. Fought it for a year, car would run but shitty sometimes and good others. Ohm out wires, check injectors, ect... Finally rewire the injector circuits and found a broke wire inside the insulation on one wire.
One time, I couldn't get rid of a PO200 code. Fought it for a year, car would run but shitty sometimes and good others. Ohm out wires, check injectors, ect... Finally rewire the injector circuits and found a broke wire inside the insulation on one wire.