Idle Speed Problem? or is it the ECU?
Discussion
OK, so (after a visit by KeTVRin on Wednesday) I have now moved the dizzy back to where it should be in an attempt to sort the timing issues I was having (this explains the 'knocking noise' I was getting in the engine)
This worked, however, when the timing is correct the idle speed is not constant & the engine sounds like it's 'stuttering' (bloody awful & rough to be honest) - when I move the dizzy to get the engine to sound 'nice' the idle speed leaps to about 1500 revs (too high).
I have cleaned the AFM sensors and checked that the TP is working - could it be that the ISCV is kaput? Although had no problems with the idle speed 4 days ago when the timing was out????
I can't seem to get both right at the same time???
I think I may need to reset the ECU - as all this 'buggering about' with the dizzy may have confused it - I have had the engine up and down to fan kicking in 3 times now???
How do I reset the ECU and any other suggestions to try?
Many thanks in advance
Cheers
Jaye
This worked, however, when the timing is correct the idle speed is not constant & the engine sounds like it's 'stuttering' (bloody awful & rough to be honest) - when I move the dizzy to get the engine to sound 'nice' the idle speed leaps to about 1500 revs (too high).
I have cleaned the AFM sensors and checked that the TP is working - could it be that the ISCV is kaput? Although had no problems with the idle speed 4 days ago when the timing was out????
I can't seem to get both right at the same time???
I think I may need to reset the ECU - as all this 'buggering about' with the dizzy may have confused it - I have had the engine up and down to fan kicking in 3 times now???
How do I reset the ECU and any other suggestions to try?
Many thanks in advance
Cheers
Jaye
Jaye R said:
How do I reset the ECU and any other suggestions to try?
Jaye,Disconnect the battery, leave it for an hour then reconnect and then start car, allow the engine to run through a full temperature cycle, i.e. fan cut in and then out. This should reset it all.
Mark
ETA YHM
Edited by mep12345 on Saturday 13th March 17:56
Hi Jaye
sounds familier
http://www.pistonheads.com/gassing/topic.asp?h=0&a..., can lend you Star tester and spare ECU if need be
Norman
sounds familier
http://www.pistonheads.com/gassing/topic.asp?h=0&a..., can lend you Star tester and spare ECU if need be
Norman
All now sorted 
- thanks for the advise 
Turned out it was the adjusting screw at the top of the throttle plate - new straight slot plate meant it needed adjusting to close the butterflies - thanks for the link Norman (it gave me the idea to check).
Engine sounds & starts great now - although, bizarrely, the timing is still 'officially' out
as the 'timing notch' does not line up with the 12 'timing mark'???
Not that bothered though if she runs & sounds OK...back on with the important stuff
now
Cheers
Jaye
- thanks for the advise Turned out it was the adjusting screw at the top of the throttle plate - new straight slot plate meant it needed adjusting to close the butterflies - thanks for the link Norman (it gave me the idea to check).
Engine sounds & starts great now - although, bizarrely, the timing is still 'officially' out
as the 'timing notch' does not line up with the 12 'timing mark'???Not that bothered though if she runs & sounds OK...back on with the important stuff
now Cheers
Jaye
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