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1994 Sidekick 16v AT 4x4 4dr virgin ECM Ruby's still there
#30
Update:
Vehicle temp ECT sensor verified 180 317 ohms
MAF (Brand Most Plus Part number M3389 102015)
Koeo:
Bl/Blk 12.57 VDC (Battery voltage)
Blk .02 VDC
Gry 1.64 VDC
Running:
1.96 VDC 800 RPM
volts rise with acceleration
ISC 14.2 ohms at operating temp
Pinched fresh air hose dies immediately, starts pinched then idles at approx 500rpm
TPS: .84 volts idle and throttle swing to 4.28 volts

Tech 1
Rich/Lean : Rich
IAC Air Flow: 28 L/Min
IAC Adjust Monitor :0%
Spark Advance: varies 5-12 degress
Injector Pulse width: 4.320
STFT 128
LTFT 128
HO2 903 MV not varying
O2S Activation Activated (Closed loop)
TPS: .84 VOLTS
Throttle Angle: .0 degrees
ECT reads 145F ( verified 180F infraed and 317 Ohms, reading again)
MAF 2.3 g/s

Injectors have been cleaned and rebuild and tested. I have a report showing results:
Inj # 1 170 CC/Min
InJ # 2 171 CC/Min
Inj # 3 170 CC/Min
Inj #4 160 CC/Min
SYS Balance 1.2 %
Total Sys LBS/Hr Static 64.76
CC fuel/Min H.P. Static 7.16
BSFC/ @ 80%/@EST. H.P. 0.55
Duty Cycle at Est. B.H.P. 0.73
@BSFC of .65 : 79.7
@BSFS of .55: 94.2
@BSFC of .50: 103.6

I will be changing the oil again for the 3rd time in case of fuel saturation and will be removing spark plugs for inspection as suggested and I will perform a block test for combustion gases.

As I mentioned before: I disconnected the vacuum hose from purge solenoid causing a vacuum leak and the HO2 sensor went to varing mv about 10mv to 900mv . The Injector pulse width drop to about 3 ms +or - Lean Rich status fluctuating between both.

My thoughts on this is that I created UN-metered ahead of the IAC and MAF sensor. Is it possible either the IAC is only opening 50% because when I pinched it it died and didn't go to 400 rpm and or a Bad MAF sensor( Poor quality)?
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RE: 1994 Sidekick 16v AT 4x4 4dr virgin ECM Ruby's still there - by SidekickTripper - 11-14-2020, 07:49 AM

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