will a miss cause positive or negative ltrims?
Thread Starter
single digit dreamer
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Joined: Mar 2002
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From: omaha ne
will a miss cause positive or negative ltrims? helping a lt1 buddy and he has one bank that is maxed at 25% positive ltrims and somthing like 7% for the other bank?
we swaped 02's and that wasn't it, looked for a vacume leak and that wasn't it. if it is missing bacause of a bad plug or wire would it show positive or negative ltrims? seems like it would show rich to me but that is why i am asking cause i am not sure.
we swaped 02's and that wasn't it, looked for a vacume leak and that wasn't it. if it is missing bacause of a bad plug or wire would it show positive or negative ltrims? seems like it would show rich to me but that is why i am asking cause i am not sure.
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
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From: Lake Zurich, IL
Re: will a miss cause positive or negative ltrims? I would guess it'd cause positive ltrims (dont know for sure though)...
If it's missing then during the exhaust cycle oxygen will be pushed out... the O2 sensor will see all this oxygen and think there wasn't enough fuel added to use it up... so it'll start adding fuel ... just a theory
If it's missing then during the exhaust cycle oxygen will be pushed out... the O2 sensor will see all this oxygen and think there wasn't enough fuel added to use it up... so it'll start adding fuel ... just a theory
