Lost power plugging a vacuum leak??
Lost power plugging a vacuum leak?? Hey everyone, very confused here. I had been tryin to track down a vacuum leak for a couple of days now. Well, i found it then immediately plugged it up. Idle dropped by a couple hundred rpm as to be expected, all is well. Anyway, i went out on the highway soon afterward to see if there may have been any difference in the way the car ran. There was a difference alright, the car seemed noticeably slower versus having the vacuum leak open. I'm perplexed by this lol, any opinions on the matter?
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
Fuel trims may need time to relearn after having supplied extra fuel to cover the leak. You can reset the trims quicker with a battery disconnect, or just let them relearn over time.
Thanks RPM, i figured that may be what i need to do. I drove immediately after plugging the leak, so i imagine that it didn't have any time to adjust to the change(guess i was too hasty lol). I'll go reset the pcm and take a lil drive.
It's probably running extra rich after "getting used to" the artificial lean condition. Disconnect the battery for 10 minutes, and after 2 or 3 startups and some wheel time, it'll be back to normal. Good luck
