Follow-up on odd acceleration stutter - Saab 9-5 Bulletin Board - Saabnet.com
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Follow-up on odd acceleration stutter
Posted by Andrej (more from Andrej) on Thu, 5 Jul 2007 09:17:11
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As mentioned in the thread below, after checking a number of items I've developed a suspicion that my acceleration stutter and occasionally rough acceleration may be the result of a failing fuel pump.
Today I drove a stretch of highway that normally returns about 31-32mpg over its length. I drove the same way as usual and only got about 28mpg. This corroborates mileage that has appeared to be somewhat lower than normal over the last week or two (averaging 22mpg in mixed driving rather than the 25-26mpg I normally see). I have been fueling from the same station with the same 93 octane fuel over this time.
I'm thinking that the mileage drop may be due to somewhat lower than spec fuel pressure causing a weak spray pattern from the injectors.
Further thoughts and comments are appreciated.
posted by 68.198.1...
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