'98 V40 T4 - high idle, EFI-254
When I start the engine, rpm revs to 3k and then fall down and fluctuate between about 1200 and 1700 rpm. Only code what I get (FCR diag) is EFI-254, probably relay terminal 3 short to ground. Diag also shows that the ECM stays in open-loop and donīt react to O2 sensor. Any hints please?
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'96 850 R, B5234T5, AW42-50LE | '89 764 GLE, D24TIC, ZF 4HP22
'97 944 Turbo, B230FK, M90 (145kW/330NM - Vialle LPi, BTI chips, 16T@0.8bar, 3"DP+2,5"cat-back, wasted-spark, DO88 IC, Bilstein B6, lowered, dual-sways...)
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