Interpreting data from software
Discussion
Hi,
with no pressure on the accellerator, my throttle position voltage is at 0.88 and goes up to 3.20 with pedal fully depressed.
Across its full range of travel it goes from map site 0.9 up to 12.9
Is this representative of a properly set up throttle?
one of the lambdas seems to be at 0 most of the time, guess that needs changing?
I'm using easimap 5.5 and the version in "newdiag.zip" (yellow cerb background) to try and glean some meaningful info.
at idle:
with no pressure on the accellerator, my throttle position voltage is at 0.88 and goes up to 3.20 with pedal fully depressed.
Across its full range of travel it goes from map site 0.9 up to 12.9
Is this representative of a properly set up throttle?
one of the lambdas seems to be at 0 most of the time, guess that needs changing?
I'm using easimap 5.5 and the version in "newdiag.zip" (yellow cerb background) to try and glean some meaningful info.
at idle:
Hi !
I think you have a problem with the charging system in the car since you only have 12.7 volts with the engine running. This could also be bad contacts and wires for the voltage feed to the ECU, that was the problem on my car. Now I have 13.5 to 14 volts reported by the ECU.
The adaptive readings are far out, they should be a lot lower, it might have to do with Lambda 1 not working as it should.
I think you have a problem with the charging system in the car since you only have 12.7 volts with the engine running. This could also be bad contacts and wires for the voltage feed to the ECU, that was the problem on my car. Now I have 13.5 to 14 volts reported by the ECU.
The adaptive readings are far out, they should be a lot lower, it might have to do with Lambda 1 not working as it should.
Looks like Lambda1 is duff. It isn't piking as it should like lambda2 is doing
This is supported by the adaptive1 reading - 34.4 is at the limit the ECU will adapt the fueling. You may well have AFR faults reported because of this.
The throttle pots are also out of trim - not wildly out but tweaking them would help - but only after lambda1 is sorted.
Check the connector atop the gearbox - it may be waterlogged. If the connectors OK then you'll need to replace the sensor.
Its pointless doing any other adjustments until you have a working lambda1 sensor.
The throttle values would seem to be out.
IIRC they usually run about site 1 to 1.5 at idle up to 15 at wide open throttle. You are definitely not getting the WOT fueling at site 12.9 and it could be running lean if you have a physically wide open throttle but the ECU still thinking its at site 12 to 13.
(I'd have to defer to Trackcar and the other experts to confirm whether the difference in fueling across the last few sites is sufficient to cause lean running)
What is it like above 4,000 rpm where the lambda adaptation isn't used? I would have thought it would run better than below 4k with all that extra fuel being dumped into one side of the engine.
This is supported by the adaptive1 reading - 34.4 is at the limit the ECU will adapt the fueling. You may well have AFR faults reported because of this.
The throttle pots are also out of trim - not wildly out but tweaking them would help - but only after lambda1 is sorted.
Check the connector atop the gearbox - it may be waterlogged. If the connectors OK then you'll need to replace the sensor.
Its pointless doing any other adjustments until you have a working lambda1 sensor.
The throttle values would seem to be out.
IIRC they usually run about site 1 to 1.5 at idle up to 15 at wide open throttle. You are definitely not getting the WOT fueling at site 12.9 and it could be running lean if you have a physically wide open throttle but the ECU still thinking its at site 12 to 13.
(I'd have to defer to Trackcar and the other experts to confirm whether the difference in fueling across the last few sites is sufficient to cause lean running)
What is it like above 4,000 rpm where the lambda adaptation isn't used? I would have thought it would run better than below 4k with all that extra fuel being dumped into one side of the engine.
The injection times are almost equal, so the fueling must be equal in the engine, if the throttles are balanced.
This is what I would do:
- Repair Lambda 1
- Balance throttles with a syncrometer
- Adjust throttle pots
When this is sorted I would try to get a better voltage reading in the ECU to prevent mil light that tells you that you have a bad battery fault. Possible faults is big fuse and its holder. Earth wire between chassis and dashboard.
This is what I would do:
- Repair Lambda 1
- Balance throttles with a syncrometer
- Adjust throttle pots
When this is sorted I would try to get a better voltage reading in the ECU to prevent mil light that tells you that you have a bad battery fault. Possible faults is big fuse and its holder. Earth wire between chassis and dashboard.
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