- Posts
- 19,297
- Location
- Buckinghamshire, UK. ('95 DT)
I was on holiday. What else do you do but fiddle with the car?!
New Owner EAS fault
- Thread starter Glynforster
- Start date
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- Posts
- 58,170
- Location
- Preston Lancs.
- Posts
- 19,297
- Location
- Buckinghamshire, UK. ('95 DT)
I did. Not always correct is what I found!
- Posts
- 58,170
- Location
- Preston Lancs.
- Posts
- 19,297
- Location
- Buckinghamshire, UK. ('95 DT)
Advice always listened to. Sometimes translated into proceed with extreme caution and see what happens!
I was going to start another thread with all my questions but for instance:
SWG set point (mV): The current SWG Set Point value over a range of 0 to 5000
millivolts. The SWG is the Control Sleeve Travel sensor. This value is the value which the
EDC ECU has determined it should be getting back from the sensor. This value should be
below 1,500 millivolts after approximately 20 seconds.
Mine is above 1500 and many other peoples appears to be as well. So why the advice for it to be below 1500 mV? Should it be? Maybe on a new car? What does it actually mean in the real world? What is out?!
- Posts
- 58,170
- Location
- Preston Lancs.
Advice always listened to. Sometimes translated into proceed with extreme caution and see what happens!
I was going to start another thread with all my questions but for instance:
SWG set point (mV): The current SWG Set Point value over a range of 0 to 5000
millivolts. The SWG is the Control Sleeve Travel sensor. This value is the value which the
EDC ECU has determined it should be getting back from the sensor. This value should be
below 1,500 millivolts after approximately 20 seconds.
Mine is above 1500 and many other peoples appears to be as well. So why the advice for it to be below 1500 mV? Should it be? Maybe on a new car? What does it actually mean in the real world? What is out?!
This is the feedback from the fuel quantity control solenoid. Set point is where the ECU thinks the control sleeve should be according to readings from engine sensors. Fuel temp, engine temp. A cold engine will be different to a hot engine. SWG Actual is the fuel quantity servo control sleeve position at the time of the reading. Varies with RPM. Should be read with the engine at idle (750 RPM) normal working temperature.
- Posts
- 19,297
- Location
- Buckinghamshire, UK. ('95 DT)
Now that's the kind of gem of information that is missing from the manual. a) what the damn thing is in English and b) read at idle. No mention of 750rpm anywhere.
To make things worse the live trace doesn't record rpm, just:
Start fuel(mg/str)
Fuel quantity feedback
Fuel quantity current
Fuel quantity compared
SWG set point(mV)
SWG actual(mV)
Inj. setpoint degrees
Inj. actual degrees
Fuel temperature(c°)
Timing modulation
So rpm would be kind of useful, would it not?!
I need to tidy some traces up and start a new thread!
J
PS. Cannot record more than 1 trace at a time. Worked that one out.
- Posts
- 58,170
- Location
- Preston Lancs.
The readings are a baseline obviously things will change at higher RPM. Think you are going a little overboard. If you get reasonable readings as stated at 750 RPM normal temp and no fault codes that is all you need to know. Timing modulation is the amount of deflection needing to be applied above or below nominal (50%) to the timing solenoid to correct static pump timing error.
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