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Idle Stabalising unit blowing

Posted: 02 Aug 2009, 13:09
by Rennie
I have had a problem with my 1981 2.0ltr Aircooled petrol T25 relating to the Idle Stabalising unit. We replaced the unit but the second one has blown.
I have opend up one of the units but can't see any blown caps or resistors, i assume the fault must be on one of the chips. The unit must be getting faulty feed from somwhere !.
I have been told i can run without the ISU but i am concered that i may damage another expensive component.
Can sombody advise which part could be causing the ISU to blow.

Regards Rennie

Re: Idle Stabalising unit blowing

Posted: 08 Aug 2009, 21:12
by Fritz
I get the feeling you are not being as honest with us as you could be , tell me have there been any wiring modifications carried out on this vehicle which are obvious in the engine compartment /fuse box and around the steering column ?

IF there are I would be looking at them first to make sure no silly sod has 'chonked' some sort of imobiliser or Ignition up grade into the system........... :shock:


Regards


Fritz,,,,,,,,,,,,,,,, :D :D :D
PS, 009 dizzy's and blue coils are a NO NO on these beasties and will cause umpteen issues other than the normal things that go wrong........

Re: Idle Stabalising unit blowing

Posted: 10 Aug 2009, 06:52
by Rozzo
most folk take both plugs off the unit and plug them together. won't cause any problems elsewhere :ok