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Hard starting service bulletin? Posted by TonyJ [Email] ![]() ![]() ![]() |
Our '04 Aero wagon (44K) has been hard to start, especially for my wife who is threatening to keep our "spare" 97 9000 (just posted in Saabnet classified). There are no stored codes and it runs fine, boosting into the red, so I don't think its ignition related. It was recently back at the dealer for some end-of-warranty repairs, including a new fuel pump, so I called them to see if perhaps there is a check valve issue that is causing it to lose pressure overnight. The serice manager was willing to check that, but suggested that there is a service bulletin this time of year on hard starting that attributes the problem to seasonal changing in fuel additives. He recommended switching to regular gas for a tank or two. Anyone know whether this works?
He also suggested watching the tach while it's cranking; if it's erratic, that could mead a bad CPS. Ours comes smoothly up to zero RPM during cranking. any insights?
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