'01 aero: speed flutters at highway cruising... - Saab 9-5 Bulletin Board - Saabnet.com
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'01 aero: speed flutters at highway cruising...
Posted by Caukinh (more from Caukinh) on Mon, 23 Mar 2009 17:31:00
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'01 Aero, 85K
My car's speed seems to flutter at steady highway speed (70-80 MPH), eventhough my foot was steady on the gas petal.
I don't characterize it as "surge." Mime is more "gentle" than that: like encountering minor crosswinds while traveling ~70 MPH.
The throttle/speed would flutter for a micro second then return to normal. It may happen 2 or 3 times a minute. But it may go for 3-4 minutes without fluttering at all. While it's happening I can see the TURBO gauge goes up and down a "tiny bit."
RPM is always in "steady state." Not fluctuating at all.
It's more noticeable/frequent in SPORT mode. I understand that the throttle is "super" sensitive in the Sport mode!
It also happens with Cruise Control ON.
Do not happen/detectable at local stop-and-go roads, ~< 40 MPH.
Do not happen at idle AT all!
It's been happening in the last 2 wks with 2 different tanks of gas.
Spark plugs + air filter + fuel filter changed at 60k (~2yrs ago).
TIA
posted by 70.20.139...
Posts in this Thread:
- '01 aero: speed flutters at highway cruising..., Caukinh, Mon, 23 Mar 2009 17:31:00 <-- Viewing This Message
- New TB, problem solved. Thank you all. n/m, caukinh, Wed, 1 Apr 2009 04:50:27
- Re: '01 aero: speed flutters at highway cruising..., Wisaabi, Mon, 23 Mar 2009 17:47:24
- Re: '01 aero: speed flutters at highway cruising..., dtech, Mon, 23 Mar 2009 17:45:20
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