97 Olds 88 3.8 misfire
#11
Senior Member
True Car Nut
P0300=Random misfire
P0131=O2 sensor circuit low bank 1 sensor 1
P0300 confirms random misfire without a specific cylinder having more misfires than the others
P0131 identifies that the front oxygen sensor/wiring/etc. is returning low voltage
I think the P0131 isn't very important to diagnosing your reliability issue, but will help with emissions/economy/etc. later when we figure out what'* causing the power loss etc.
For now let'* keep going with what we're looking for above.
P0131=O2 sensor circuit low bank 1 sensor 1
P0300 confirms random misfire without a specific cylinder having more misfires than the others
P0131 identifies that the front oxygen sensor/wiring/etc. is returning low voltage
I think the P0131 isn't very important to diagnosing your reliability issue, but will help with emissions/economy/etc. later when we figure out what'* causing the power loss etc.
For now let'* keep going with what we're looking for above.
#12
Senior Member
Posts like a Turbo
#13
I do not have access to a live data scanner as above. I have an appointment at a shop for Monday and I will ask them to start with the fuel pressure test.
If Fuel pump is confirmed good then will go after other things. As I said all 6 coil terminals do spark on a static test but don't know what might take place intermittently.
I have had a coil failure on another vehicle but the current situation is very different in that it is more of an all across the board petering out (no backfire) as opposed to the abrupt hiccup and backfiring with the coil failure.
Question:......Is there a simpler way to test the fuel pump at home rather than pay for diagnosis?
If Fuel pump is confirmed good then will go after other things. As I said all 6 coil terminals do spark on a static test but don't know what might take place intermittently.
I have had a coil failure on another vehicle but the current situation is very different in that it is more of an all across the board petering out (no backfire) as opposed to the abrupt hiccup and backfiring with the coil failure.
Question:......Is there a simpler way to test the fuel pump at home rather than pay for diagnosis?
#14
Senior Member
Sure there is......Places like AutoZone have tool programs, where you pay for the tool, take it home and use it, and then return it and get your money back....of you could just buy a fuel pressure gauge....they are not expensive....certainly cheaper than paying a tech to check it....
#15
Us Canucks are under privileged in regards to autozone and tool programs. They don't exist. Thought of buying one but then thought if it wasn't the fuel pump I would be back to the Tech and have a $60.00 tool that I will likely never use again.
Just got the verdict. Fuel Pump is Done. Diagnosis complete. A big thanks to Y'ALL.
Just got the verdict. Fuel Pump is Done. Diagnosis complete. A big thanks to Y'ALL.
#16
Senior Member
True Car Nut
Us Canucks are under privileged in regards to autozone and tool programs. They don't exist. Thought of buying one but then thought if it wasn't the fuel pump I would be back to the Tech and have a $60.00 tool that I will likely never use again.
Just got the verdict. Fuel Pump is Done. Diagnosis complete. A big thanks to Y'ALL.
Just got the verdict. Fuel Pump is Done. Diagnosis complete. A big thanks to Y'ALL.
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