03-15-2020, 02:34 AM
( said more simply)
500 rpm, is wrong, hot. dead wrong. only lots of causes, there is not be only one cause , there are many
nut shell physics:
engine bad, (no yours not if compression is ok 195PSI) but basics are this, we check basics first, the raw engine is not bad , and pumps air ok,
bad spark cause misfire, you engine misfires, so bad spark, this too is basics, or timed wrong.
egr stuck open your is not.
now we get to fueling rates, this is called advance EFI testing.
sensors read wrong, no just the O2 reads wrong and CL is dead..
leaving what bad fueling..
called actuator testing.
The ISC must work, of idle controls are dead, and idle is wrong.
the TPS must be calibrated or ISC will be dead... (sure can be, ) the PCM may warn , TPS errors. if lucky. if the tps is dead or idle switch stuck it will. DTC
500 rpm, is wrong, hot. dead wrong. only lots of causes, there is not be only one cause , there are many
nut shell physics:
engine bad, (no yours not if compression is ok 195PSI) but basics are this, we check basics first, the raw engine is not bad , and pumps air ok,
bad spark cause misfire, you engine misfires, so bad spark, this too is basics, or timed wrong.
egr stuck open your is not.
now we get to fueling rates, this is called advance EFI testing.
sensors read wrong, no just the O2 reads wrong and CL is dead..
leaving what bad fueling..
called actuator testing.
The ISC must work, of idle controls are dead, and idle is wrong.
the TPS must be calibrated or ISC will be dead... (sure can be, ) the PCM may warn , TPS errors. if lucky. if the tps is dead or idle switch stuck it will. DTC
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