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'02 95 ARC 6cyl rough idle and hesitating, auto-trans Posted by thewheell22 [Email] (#2450) [Profile/Gallery] (more from thewheell22) on Fri, 2 Oct 2020 13:07:24 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Hi all,
That's my enjoyable ride and my current Diagnosis/Fix project.
Some history can be seen here: https://www.saabnet.com/tsn/bb/9-5/index.html?bID=282308
To re-cap:
About 2-3mo ago it started to have a little rough idle w/ occasional stall immediately w/ 1st start of the day after revving up on ignition (the usual momentary 1500rpm or so before going right to idle but would go straight to stall), immediate re-ignition always works but seems a little rough at about 740rpm.
Crank shaft position sensor replaced 3 months ago after I was getting the hot engine crank-no-start occasionally until engine cooled. That's no longer a prob.
The hesitancy, and occasional hard shifting on take off makes me think the hard shift is from the engine, not the trans since the shifting prob doesn't happen w/ regularity.(thinking right/wrong?)
3 weeks ago I got a one-time CEL for "small leak EVAP" system. Cap tight, new soft vac lines ok, what hard vac lines I can see are good. Maybe a failing EVAP valve at the engine? My WIS is not playing well right now and I don't know where exactly that valve is for testing.
Your thoughts, as always, are greatly appreciated from this August body of SAAB drivers!
Thanx!
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