10-29-2020, 01:54 AM
Thanks again,
I have since checked Ohms on all injector coils.
1. 13.8 ohm
2. 13.7 ohm
3. 13.8 ohm
4. 13.8 ohm
engine cold
and monitored the HO2 Idle .874mv operating temp
1000 rpm .869 mv
1500 rpm .874 mv
running for 10 min later
Status Lean
IAC 17 l/min
SPK 7-8 drgrees
INJ PW 4.8
STFT 128
LTFT 117
HO2 .73 mv Deactivated
TPS .86
MASS 2.5
______
10 Min More Idling
HO2 8.74 mv
Activated
Status Rich
_______
10 Min
1740 RPM
Status Lean
IAC 29 L/Min
SPK 34 Deg
PW 4.3 ms
STFT 128
STFT 128
HO2 .49 mv deactivated
I will check partially heated injectors Ohms and check for crack at # 4 exhaust manifold.
with the new information you provided 4.0 ms Idle is not normal.
A crack mainfold upstream would show bias lean all time and low volts correct?
and command rich possibly increasing Pulse Width?
Thanks again keep you posted
I have since checked Ohms on all injector coils.
1. 13.8 ohm
2. 13.7 ohm
3. 13.8 ohm
4. 13.8 ohm
engine cold
and monitored the HO2 Idle .874mv operating temp
1000 rpm .869 mv
1500 rpm .874 mv
running for 10 min later
Status Lean
IAC 17 l/min
SPK 7-8 drgrees
INJ PW 4.8
STFT 128
LTFT 117
HO2 .73 mv Deactivated
TPS .86
MASS 2.5
______
10 Min More Idling
HO2 8.74 mv
Activated
Status Rich
_______
10 Min
1740 RPM
Status Lean
IAC 29 L/Min
SPK 34 Deg
PW 4.3 ms
STFT 128
STFT 128
HO2 .49 mv deactivated
I will check partially heated injectors Ohms and check for crack at # 4 exhaust manifold.
with the new information you provided 4.0 ms Idle is not normal.
A crack mainfold upstream would show bias lean all time and low volts correct?
and command rich possibly increasing Pulse Width?
Thanks again keep you posted