Idle dropping when putting foot on break or turning on accessories.
09-27-18, 10:30 PM
#3
Full Member
Thread Starter
I am also wondering if the throttle plates are supposed to be completely shut when the car is first started at idle. To the point where light won't shine through the other side
09-28-18, 01:10 PM
#5
Senior Member
Idle can also be affected by a leak in the brake booster. There can also be other items to control idle on the engine. On the S5 turbo, there are 3 different solenoids to control idle; there is the BAC, which you mentioned, as well as two that pull air from the intercooler when transient loads such as A/C, or power steering are encountered. Like he said, check the manual to find the test procedures for each device.
09-28-18, 06:47 PM
#6
Full Member
Thread Starter
Idle can also be affected by a leak in the brake booster. There can also be other items to control idle on the engine. On the S5 turbo, there are 3 different solenoids to control idle; there is the BAC, which you mentioned, as well as two that pull air from the intercooler when transient loads such as A/C, or power steering are encountered. Like he said, check the manual to find the test procedures for each device.
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