Date: Mon, 13 Jan 2003 15:06:38 +0000 From: Grunff <grunffnopsam.com> Subject: Re: '86 900 loosing power
Greg Youngen wrote: > 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. You've done all the right things so far. I agree about the fuel pump, it's unlikely to cause these symptoms, even if it's getting noisy. How about the ignition coil? These can start to break down intermittently, causing similar symptoms. You don't say what year it is - if it has a hall-effect distributor, it could be either a failing sensor or a failing connector (black plug on the side of the dissy). If it isn't, how are the points? Given all the stuff you've already replaced, these are my only guesses (apart from a bad fuel regulator, but I've never seen that before). -- Grunff
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