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Engine management light on all the time
- peter broadbent
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26 Dec 2012 16:13 #56260
by facade
If it suddenly breaks, go back to the last thing that you did before it broke and start looking there
Replied by facade on topic Engine management light on all the time
There are 2 ways to monitor the egr valve.
First is a position sensor in the valve. (doubt if the jimny has one)
Second, more likely, the ecu cracks the valve open at idle (when it should be closed) and looks for a disturbance at idle (as in a drop in revs)
This is likely the reason for the odd "miss" at idle that the early twin cams have.
Anyway, if the passages to the EGR are blocked so it doesn't work it will likely fail this test and put the light on.
If the valve sticks open, the idle is lumpy, and the CO readings are up at the pre-cat sensor.
I would clean the valve passageways and the valve itself and reset the light, then as soon as it comes on again read the codes and let us know what they are.
First is a position sensor in the valve. (doubt if the jimny has one)
Second, more likely, the ecu cracks the valve open at idle (when it should be closed) and looks for a disturbance at idle (as in a drop in revs)
This is likely the reason for the odd "miss" at idle that the early twin cams have.
Anyway, if the passages to the EGR are blocked so it doesn't work it will likely fail this test and put the light on.
If the valve sticks open, the idle is lumpy, and the CO readings are up at the pre-cat sensor.
I would clean the valve passageways and the valve itself and reset the light, then as soon as it comes on again read the codes and let us know what they are.
If it suddenly breaks, go back to the last thing that you did before it broke and start looking there
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- peter broadbent
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26 Dec 2012 20:47 #56286
by facade
If it suddenly breaks, go back to the last thing that you did before it broke and start looking there
Replied by facade on topic Engine management light on all the time
Get a £20 fault code reader from eBay, then you can read the fault code and reset it at the press of a button.
Could be a wiring fault I suppose, check the wiring for melted or chafed pieces, or being too tight.
Could be a wiring fault I suppose, check the wiring for melted or chafed pieces, or being too tight.
If it suddenly breaks, go back to the last thing that you did before it broke and start looking there
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- JerseyJimny
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- peter broadbent
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