ViolentMouse
Senior Member
On a 97 5.9 the truck will run even with the oxygen sensors cut and the wires twisted together, it will default to open loop mode and provide a simulated voltage.
We need to find out what you are losing when it dies. I will check the codes you provided tomorrow when I am at the shop.
If you are losing spark when it dies... crank sensor
If you are losing fuel injectors when it dies... cam sensor
Does it only die when driving or will it just shut off if left idling? If only when driving and when letting off the gas pedal You could have a clogged throttle body or a bad Idle Air Control Valve.
Even if you replace the IACV, if the air passages for the IACV are clogged, it will still die when you let off the gas. (too rich, no idle air.)
If your throttle body is loose, it can die when you let off the gas. (too lean, not enough idle fuel.)
You really need a scanner that can show you live data so that you can look at your long term and short term fuel trims. That data is really crucial in determining if you have some kind of too rich or too lean issue.
If you still need help dialing this issue down feel free to hit me up I can walk you through every step and provide data for every wire to test.
We need to find out what you are losing when it dies. I will check the codes you provided tomorrow when I am at the shop.
If you are losing spark when it dies... crank sensor
If you are losing fuel injectors when it dies... cam sensor
Does it only die when driving or will it just shut off if left idling? If only when driving and when letting off the gas pedal You could have a clogged throttle body or a bad Idle Air Control Valve.
Even if you replace the IACV, if the air passages for the IACV are clogged, it will still die when you let off the gas. (too rich, no idle air.)
If your throttle body is loose, it can die when you let off the gas. (too lean, not enough idle fuel.)
You really need a scanner that can show you live data so that you can look at your long term and short term fuel trims. That data is really crucial in determining if you have some kind of too rich or too lean issue.
If you still need help dialing this issue down feel free to hit me up I can walk you through every step and provide data for every wire to test.