Need help understanding self dianostics
I did some dianostics on my 1997 civic lx. If someone can understand this and possibly tell me what problems to look for. I have no engine codes and I do know the throttle position sensor should be 10% closed but a mechanic messed with the stop screw and it's set to 11%. Here it is.
Park a/c off:
RPM: 802 to 921
Throttle position: 11%
Load: 42%
Timing advance: 11.5 to 13 deg
Intake manifold pressure: 11.8 to 12.4 HG
Short term fuel trim: 16.4 to 19.5%
Long term fuel trim: 12.5%
O2/1: .070 volt @18.7% to .820 volt 18.0%
O2/2: .78 volt @ 18.0% t0 .82 volt @ 19.5%
Drive stopped a/c off:
RPM: 809
Throttle position: 11%
Load: 54.5 to 58%
Time advance: .5 to 2.0 deg
Intake manifold pressure: 17.1 HG
Short term fuel trim: 18.7%
Long term fuel trim: 12.5%
O2/1: .250 volt @ 19.5 to 20.3%
O2/2: .760 volt @ 18.75 to 19.5%
Park a/c on:
RPM: 824
Throttle position: 11%
Load: 67.5%
Time advance: 2.5 to 4.0 deg
Intake manifold pressure: 19.5 to 20.1 HG
Short term fuel trim:16.4 to 17.2%
Long term fuel trim: 12.5%
O2/1: .155 volt @18.0% to .350 volt @ 16.4%
O2/2: .55 volt @ 18.0 % to .115 volt @ 16.4%
Drive stopped a/c on:
RPM: 545
Throttle position: 11%
Load: 85.5
Time advance: 10 deg
Intake manifold pressure: 25.7 HG
Short term fuel trim: 10.0%
Long term fuel trim: 12.5%
O2/1: .975 volt @ 0.0%
O2/2: .995volt @ 0.0%
Park a/c off:
RPM: 802 to 921
Throttle position: 11%
Load: 42%
Timing advance: 11.5 to 13 deg
Intake manifold pressure: 11.8 to 12.4 HG
Short term fuel trim: 16.4 to 19.5%
Long term fuel trim: 12.5%
O2/1: .070 volt @18.7% to .820 volt 18.0%
O2/2: .78 volt @ 18.0% t0 .82 volt @ 19.5%
Drive stopped a/c off:
RPM: 809
Throttle position: 11%
Load: 54.5 to 58%
Time advance: .5 to 2.0 deg
Intake manifold pressure: 17.1 HG
Short term fuel trim: 18.7%
Long term fuel trim: 12.5%
O2/1: .250 volt @ 19.5 to 20.3%
O2/2: .760 volt @ 18.75 to 19.5%
Park a/c on:
RPM: 824
Throttle position: 11%
Load: 67.5%
Time advance: 2.5 to 4.0 deg
Intake manifold pressure: 19.5 to 20.1 HG
Short term fuel trim:16.4 to 17.2%
Long term fuel trim: 12.5%
O2/1: .155 volt @18.0% to .350 volt @ 16.4%
O2/2: .55 volt @ 18.0 % to .115 volt @ 16.4%
Drive stopped a/c on:
RPM: 545
Throttle position: 11%
Load: 85.5
Time advance: 10 deg
Intake manifold pressure: 25.7 HG
Short term fuel trim: 10.0%
Long term fuel trim: 12.5%
O2/1: .975 volt @ 0.0%
O2/2: .995volt @ 0.0%
Joined: Sep 2002
Posts: 51,241
Likes: 20
From: NV
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Re: Need help understanding self dianostics
seems your rpms are messed up. 545 is way too low, and 800 is a bit high but not too bad. does the engine shake with that low of rpm?
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