Diagnostics check fault/codereader fault ( cannot read any codes or get a signal )

1995 Vauxhall Tigra 1.4 16v
Car: Vauxhall Tigra
Year: 1995
Variant: 1.4 16v
Categories: Running Rough, Starting & Power Loss
I have a vauxhall tigra 1.4 i6v 1995 plate! The engine management light comes on everytime I drive above 2500 revs & it effects the performance/power! I've tried doing a diagnostics check to find out what the problem is but the code reader is unable to pick up a signal/read any codes! Does anyone know what the problem may be? Or... does anyone have any solutions/fixes to this problem other than me changing the ecu along with the coded key? Or is there anyone out there who has had the same symptoms with thier car & found out what the problem was?
Problem added: Apr 9, 2011 (12 years ago)
Get it scanned by garage with correct code reader and see what faults show .
Answered Apr 9, 2011 (12 years ago)
I have been to the garage & the right codereader was used but yet it's NOT picking up a signal! It doesn't seem to be picking up any codes atall!
Answered Apr 11, 2011 (12 years ago)

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