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I need help with a persistent problem: frequent, intermittent *stalling* on our 2001 9-5 aero sedan (about 150K on it). When not stalling, the engine is strong and quiet. It restarts instantly after each stall. The engine does require, when cold, some throttle, for 20-30 seconds, to keep it running right after start-up. The idle speed tends to be lower than normal once the engine warms up. The stalling occurs most often under strong acceleration, but it also occurs under moderate, steady throttle.
Check engine codes we’ve gotten: repeatedly the codes are for *throttle body*.
The engine generally runs with the check engine and TCS lights on. After resetting (for example, by brief removal of the relevant fuse), the check engine and TCS lights turn off but come back on soon (within 5-30 minutes). The intermittent stalls begin to recur soon after the two lights come back on.
what we've tried so far (with no improvement in symptoms):
• we have put in 2 replacement (used) throttle bodies, with repeated resetting (physically and, with a Tech 2, electonically)
• we have put in one replacement (used) engine computer, adapted to the car with a Tech 2
• we have confirmed the functioning of our 9-5’s DIC by swapping DICs with our '01 Viggen DIC
(the 9-5’s DIC worked fine in the Viggen: no stalling or any other problem)
additional (repair) options that we’ve thought of:
• installation of a brand new (Bosch) crank position sensor
• installation of a brand new vapor canister purge valve / solenoid
• installation of a brand new part (valve?) for the throttle body
* a brand new oem (genuine SAAB) DIC??
* getting the idle speed set at a higher level
Please post any ideas you have on this.
Thanks! -Mark
posted by 68.190.12...
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