Date: Mon, 13 Jan 2003 18:25:45 GMT From: Paul Halliday <pjghnopsamyonder.co.uk> Subject: Re: '86 900 loosing power
in article Pine.GSO.4.31.0301130840540.24819-100000nopsamf2.cso.uiuc.edu, Greg Youngen at youngennopsamf.uiuc.edu wrote on 13/01/2003 14:52: > My 900 (8v, 150k mi.) has been loosing power lately, (not that much to > begin with, so any loss is noticable). At low rpms, under acceleration, > the engine is very rough. For example, in gears 2-5, in the 1200 to 2000 > rpm range, the motor runs very rough. Get it above 2k and it smooths out. > However, I also notice it in 5th gear and nearly need to floor the > throttle just to go 65 mph. > > I've recently replaced plugs, wires, dist. rotor & cap, fuel filter, and > checked (visually) for vacuum leaks. > > Any suggestions about what might be going on? My fuel pump is beginning > to buzz a little, so I know this will soon need to be replaced. However, > I don't think this problem is symptomatic of the dying fuel pump. > > Any advice appreciated. I thought it was a curse on the '85 models only :) My '85 900i has been playing up with what feels like bad compression at low revs and another poster around Christmas had the same issue with his '85 900i. All my electrics are fine and no moisture is present across the sparks or in the dizzy cap. I found that from a cold start, my idle was higher than usual before the problem becomes apparent. I did find that running a higher octane petrol helped me. I usually run 95 RON (normal unleaded for the UK), but running 98 RON (UK super unleaded) has eased the situation. My wife reports that it's still running crap though until it's got through the warm-up stage :( Anyone else got thoughs? Paul 1985 900i 16V 1989 900 Turbo S http://pjgh.go.dyndns.org/saab/index.html
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