low power/ hesitation 87 900T SPG - Saab 900 Bulletin Board - Saabnet.com
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low power/ hesitation 87 900T SPG
Posted by daveC (more from daveC) on Thu, 14 Feb 2002 03:26:29
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when in fourth/fifth or taking a hill the power and boost will drop off. the problem is not apparent in lower gear i imagine due to the gear ratio. it feels like an intermitent hesitation and when i let off the gas you can feel the power come back. this problem is present about 95% of the time. i've tried cleaning the AMM and the aux. air valve with contact cleaner. the spark plugs were replaced recently, the rotor and cap look good, and i can't find any vacuum leaks. fuel filter was replaced recently but i wonder if fuel pressure to the fuel rail could cause this problem. i have little money and am hesitant to start swapping out parts. does anyone know of any tests that can be performed on any of the sensors or components? does anyone know of a better manual than (Haynes 1979-1988)? does anyone know if the O2 sensor could be causing me problems. I also suffer from erratic idle and hesitation when engine is cold. please give suggestions.
posted by 64.180.16...
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