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Old 06-23-2010, 07:59 AM   #1
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Default Rpm Surging at idle

So i sold my MS PnP and went back to my stock ecu,as well as the bocsh tps sensor and replaced it with the original. Now when i come to a stop the idle will sometimes drop to close to 600 maybe 500 rpms then back up to 1100 a few times then settle at 900 where i have it set. Its wierd it doesnt do it all the time, ive been searching for the problem for a few days now. Any ideas?
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Old 06-23-2010, 08:02 AM   #2
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Did you plug or remove the old PnP signal line? Maybe a vacuum leak?
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Old 06-23-2010, 10:52 AM   #3
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Sounds like a vacuum leak.
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Old 06-23-2010, 12:20 PM   #4
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TEN+GND and set base idle
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