Date: Sat, 24 Feb 2007 22:14:35 GMT From: Paul Halliday <pjghnospamyonder.co.uk> Subject: Re: 1990 900Turbo - Q re Fuel pump relay & ECU
in article b-adnfcftbc6CH3YnZ2dnUVZ8sSrnZ2dnospamnews.com, sb at sbnospam.net wrote on 24/02/2007 19:42: > Having always started first pull, every time for 17 years even in > Switzerland in winter, today it didn't! No hum or tick from fuel pump. > > RAC (AAA, etc) came out, worked hard, and found the following: > > - Fuel pump ok (by powering fuse point, pump worked and car started) > - Fuel pump relay ok (shorting out ECU, relay engaged, pump worked, car > started) > > Thus concluded (and here I don't know what I'm talking about) that ECU was > stopping earth side of relay. Suggested I get ECU tested (GBP40, if faulty, > exchange ECU = GBP 250), and that if OK then the wiring to/from it is at > fault.. > > The test specialists said they'd Never heard of this ECU going wrong. > They reckon check wiring first to save wasting money. > > Any similar experiences? Any clues? No similar experiences, I'm afraid (I have always had 8V 900s), but I would check the wiring first. My gut instinct is that the ECU is unlikely to be the fault - some short on the wiring is a lot more likely. If the car was mine (and I've been there with my car, in a manner of speaking), I would swing by a good auto-electrician and have them test the circuits. I bet they find all manner of green ends to your wires and some live/ground faults. Good luck ... Hope you have a satisfactory (and cheap) outcome. Paul 1989 900 Turbo S http://saab.go.dyndns.org/
