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Re: F90TLR, 2006 90hp
Question:
If I use YDS, what parameters would I look at to lead me in the direction to fix this issue? First, I'd like to narrow down to either fuel or electrical. Is that possible using YDS?
Background:
Initially, I used the YDS and it led me to the ISC valve was defective or at least I thought that was the issue. The static test seemed like the stepper motor was not consistent. The active test did increase the rpm. Ordered a new part, installed but have the same issue of not idling properly.
The motor wants to die when I put in neutral. When I do get in gear it runs rough at lower rpm.
At this point, I have a new ISC with a motor that doesn't idle properly.
The boat/motor was in storage for 5 months in Fla. I put the boat in the wate and it ran fine the first time. The next time I noticed that it was difficult to idle but could play with it and get into gear. It seems to run fine at WOT. Took out once more and then I had real problems. Limped back to the lift and there it sets.
Any suggestions?
================================================== ======================
I added this after init post...is the TPS volt to high? Saved data from YDS.
Save date,October 14 2017,
ECM No.:,6D88591A10,
Diagnosis,
,Code,Item,Result,Condition,
,13,Pulser coil,Normal,,
,15,Water temp sensor,Normal,,
,17,Knock sensor,Normal,,
,18,Throttle position sensor,Normal,,
,19,Battery voltage,Normal,,
,23,Intake temp sensor,Normal,,
,28,Shift position switch,Normal,,
,29,Intake press sensor,Normal,,
,37,Intake air passage,Normal,,
,44,Engine stop lanyard switch,Off,,
,49,Over cooling,Normal,,
Diagnosis Record,
,Total hours of operation,1038,
,Code,Item,Occurred,
,37,Intake air passage,725.8,
,18,Throttle position sensor,756.2,
,23,Intake temp sensor,756.2,
,28,Shift position switch,756.2,
,29,Intake press sensor,756.2,
Engine Monitor,
,Monitor Item,Result,Unit,
,Engine speed,750,r/min,
,Intake pressure,32.98,kPa,
,Intake pressure,9.76,inHg,
,Atmospheric pressure,1065.3,hPa,
,Atmospheric pressure,31.5,inHg,
,Ignition timing,TDC,deg,
,Battery voltage (12-16),14.30,V,
,TPS voltage (0.5-4.5),0.982,V,
,Throttle valve opening (0-90),7.1,deg,
,ISC valve opening,23,%,
,Fuel injection duration,2.26,ms,
,Water temperature (below 90),44.0,°C,
,Water temperature (below 194),111.2,°F,
,Intake temperature (below 70),32.9,°C,
,Intake temperature (below 158),91.1,°F,
,Engine stop lanyard switch,OFF,,
,Shift position switch,ON,,
,Oil press switch,OFF,,
,Dual engine system switch,OFF,,
================================================== ====================
Added another edit.
Notice that the DataLogger info below the following data:
rpm @ TPS voltage
3500 @ 1.54
3650 @ 1.80
3750 @ 1.70
4000 @ 1.88
The rpm is linear but the TPS voltage is not. This doesn't look correct to me. If the rpm increases the TPS volt should increase...it doesn't.
Any comments?
Data Logger[Data comparison graph],
,Engine speed[r/min],Battery voltage (12-16)[V],TPS voltage (0.5-4.5)[V],Water temperature (below 90)[°C],Intake pressure[kPa],Oil press switch[0:OFF 1:ON]
,3500,14.06,1.54,59.3,63.7,0,
,3650,13.99,1.80,58.6,62.7,0,
,3750,14.06,1.70,57.1,62.7,0,
,4000,13.99,1.88,58.6,66.6,0,
,4000,13.99,1.88,65.8,66.6,0,
,3700,14.06,1.54,58.6,70.6,0,
,3550,13.99,1.80,58.6,62.7,0,
,3900,14.94,1.88,62.5,62.7,0,
,3650,13.99,1.72,65.8,71.1,0,
,3750,13.99,1.88,59.3,70.6,0,
,3750,14.58,1.84,65.8,73.0,0,
,2100,15.23,1.39,58.6,64.7,0,
,1100,15.82,1.25,55.7,62.7,0,
Question:
If I use YDS, what parameters would I look at to lead me in the direction to fix this issue? First, I'd like to narrow down to either fuel or electrical. Is that possible using YDS?
Background:
Initially, I used the YDS and it led me to the ISC valve was defective or at least I thought that was the issue. The static test seemed like the stepper motor was not consistent. The active test did increase the rpm. Ordered a new part, installed but have the same issue of not idling properly.
The motor wants to die when I put in neutral. When I do get in gear it runs rough at lower rpm.
At this point, I have a new ISC with a motor that doesn't idle properly.
The boat/motor was in storage for 5 months in Fla. I put the boat in the wate and it ran fine the first time. The next time I noticed that it was difficult to idle but could play with it and get into gear. It seems to run fine at WOT. Took out once more and then I had real problems. Limped back to the lift and there it sets.
Any suggestions?
================================================== ======================
I added this after init post...is the TPS volt to high? Saved data from YDS.
Save date,October 14 2017,
ECM No.:,6D88591A10,
Diagnosis,
,Code,Item,Result,Condition,
,13,Pulser coil,Normal,,
,15,Water temp sensor,Normal,,
,17,Knock sensor,Normal,,
,18,Throttle position sensor,Normal,,
,19,Battery voltage,Normal,,
,23,Intake temp sensor,Normal,,
,28,Shift position switch,Normal,,
,29,Intake press sensor,Normal,,
,37,Intake air passage,Normal,,
,44,Engine stop lanyard switch,Off,,
,49,Over cooling,Normal,,
Diagnosis Record,
,Total hours of operation,1038,
,Code,Item,Occurred,
,37,Intake air passage,725.8,
,18,Throttle position sensor,756.2,
,23,Intake temp sensor,756.2,
,28,Shift position switch,756.2,
,29,Intake press sensor,756.2,
Engine Monitor,
,Monitor Item,Result,Unit,
,Engine speed,750,r/min,
,Intake pressure,32.98,kPa,
,Intake pressure,9.76,inHg,
,Atmospheric pressure,1065.3,hPa,
,Atmospheric pressure,31.5,inHg,
,Ignition timing,TDC,deg,
,Battery voltage (12-16),14.30,V,
,TPS voltage (0.5-4.5),0.982,V,
,Throttle valve opening (0-90),7.1,deg,
,ISC valve opening,23,%,
,Fuel injection duration,2.26,ms,
,Water temperature (below 90),44.0,°C,
,Water temperature (below 194),111.2,°F,
,Intake temperature (below 70),32.9,°C,
,Intake temperature (below 158),91.1,°F,
,Engine stop lanyard switch,OFF,,
,Shift position switch,ON,,
,Oil press switch,OFF,,
,Dual engine system switch,OFF,,
================================================== ====================
Added another edit.
Notice that the DataLogger info below the following data:
rpm @ TPS voltage
3500 @ 1.54
3650 @ 1.80
3750 @ 1.70
4000 @ 1.88
The rpm is linear but the TPS voltage is not. This doesn't look correct to me. If the rpm increases the TPS volt should increase...it doesn't.
Any comments?
Data Logger[Data comparison graph],
,Engine speed[r/min],Battery voltage (12-16)[V],TPS voltage (0.5-4.5)[V],Water temperature (below 90)[°C],Intake pressure[kPa],Oil press switch[0:OFF 1:ON]
,3500,14.06,1.54,59.3,63.7,0,
,3650,13.99,1.80,58.6,62.7,0,
,3750,14.06,1.70,57.1,62.7,0,
,4000,13.99,1.88,58.6,66.6,0,
,4000,13.99,1.88,65.8,66.6,0,
,3700,14.06,1.54,58.6,70.6,0,
,3550,13.99,1.80,58.6,62.7,0,
,3900,14.94,1.88,62.5,62.7,0,
,3650,13.99,1.72,65.8,71.1,0,
,3750,13.99,1.88,59.3,70.6,0,
,3750,14.58,1.84,65.8,73.0,0,
,2100,15.23,1.39,58.6,64.7,0,
,1100,15.82,1.25,55.7,62.7,0,
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