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Re: 9-5 misfires under load 1 Saabers Like This Post!
Posted by skibumm100 [Email] (#3255) [Profile/Gallery] (more from skibumm100) on Mon, 18 Sep 2023 10:19:44
In Reply to: Re: 9-5 misfires under load, skibumm100 [Profile/Gallery] , Fri, 8 Sep 2023 05:04:49 Members do not see ads below this line. - Help Keep This Site Online - Signup
Update: I tried a new gauge and all I was getting was about 33-34 lbs of fuel pressure at the rail. I bought a new Bosch regulator, just in case. Before I swapped that out (much easier on a 9000), I took the fuel pump assembly out of my wrecked 96 9000 Aero. It was running great until it got hit. It's been sitting for a year and a half but I started it up and moved it a couple weeks ago so I knew it would run. FYI, the fuel pump assembly for a 9000 is the same as it is for a 2002 9-5 sedan. Gas gauge resistance is identical, gas tank level float arm is identical. Part number on the assembly was identical. Dropped it in, started it up and I had 43# of fuel pressure with the vacuum line off. Fixed! Fuel pressure responds with vacuum and boost. So I either got a bad Walbro (TI Automotive) pump or it was possibly leaking internally at the pump hose barb because I didn't put a hose clamp on it. It was tight fit but maybe....?
_______________________________________ long-time listener, first-time caller Saab glutton for punishment
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