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I bought a 2005 9-5 Aero (manual) in November with 69K on the clock ($7600). I started noticing that it took more cranking than I would imagine to start it, and it cranked kind of slow. Because it was November and I live in Minnesota, I immediately replaced the battery (which looked kind of old and dirty but had no date punched on it) to have one less thing to worry about. It cranked better after this, but sometimes it still took way too long to start (though it always did, eventually), but usually only after sitting for a while. Next up I changed the fuel line check valves the fuel filter. Now i have a late-2005 9-5, which means that I have the fuel filter with the GM style fittings and not the traditional banjo bolt fittings. But Eeuroparts had the filter for $12 or so and a trip to O Reilly to get the GM fuel line release tool ($8 I think) I was in business.
However, the next time I went to take my kids to an activity, I gave the car some gas, built boost and then the car stuttered. I turned off the main road onto a side road quickly and tried again. Anytime I got just into the yellow on the boost gage the car would hesitate and shutter, but if I backed off it would run fine. It appeared that I now had the LPT version of the Aero. Luckily in Minnesota in winter, you don't spend a lot of time on boost. This one would just have to wait a little bit because .....
After replacing the fuel filter and check valves, my long cranking starts were gone. Good to go, right? Not exactly. After taking my son to basketball on one cold minnesota morning, we came back out to my car and it would not start. After waiting another 45 minutes I went back out and tried again. Presto, it started. This sounded like classic hot-start issue, which pointed to crankshaft position sensor. Not having time to order online, I found one locally for $75 at CarQuest. I was going to do the CPS when it got warmer anyway, but now I would be doing it during winter. Luckily my car did start and drive into my garage, so I didn't have to do it in my driveway. Hot-start problem now cured, after $75 and some bloody knuckles. That is a tight spot to work in. But I have never had a starting problem since.
Now back to the stuttering at heavy throttle application. It felt like the engine was fuel starved when I was driving it. Again, I was going to replace the fuel pump on this car when i warmed up, but now I decided to take the plunge. I ordered it online and got it installed without too much difficulty (thank god I didnt have to drop the tank, did that on my OG 9-3 and it sucked). Took it out for a drive ... back to full throttle power. My Aero has returned, and it starts great.
Now about that heater bypass valve I bought, figuring I would do it in the spring sometime. Mmmm. I hope I make it until spring before I get to do that one.....
Anyway, I just wanted to post this because of the many posts that I went through on this board that helped me figure out what was going on and how to get this done myself without schlepping off to the dealer and dumping $1000 or so. Thanks again. This board makes Saab ownership viable (even preferable) for me.
posted by 136.237.60...
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