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A leaking injectorcan causeNEGATIVE fuel trims
This sensor ... more likelyto causenegative fuel trims
a high MAF readingwould causenegative fuel trims
An over - reporting MAFwill causenegative fuel trims
minor intake vacuum leaks(passive) caused byNegative fuel trim numbers
Pipandales(passive) was created byNegative fuel trims
possible failure modescreatenegative fuel trim readings
‘ richer ’ combustion than the ECM of PCM(passive) is caused byNegative fuel trim
the computer will lean out the mixturecausingnegative fuel trim ) to compensate
Dynamo786(passive) was created bynegative fuel trim
your own list of possible defectscould causea negative fuel trim issue
When the sensor sees a rich mixture when compared to the open loop look up table it will take fuel awayresultingin negative fuel trim
from the fuel pressure being too high , faulty injectors , or the wrong spec for the injectorcan resultfrom the fuel pressure being too high , faulty injectors , or the wrong spec for the injector
when the PCM shortens the injector pulse widthsresultwhen the PCM shortens the injector pulse widths
wrong Synchronization of throttle bodies not rightsetwrong Synchronization of throttle bodies not right
check engine lightcausedcheck engine light
the po139causethe po139
up to add fuel into engine to keep enough fuel in the mixtureis setup to add fuel into engine to keep enough fuel in the mixture
misfiring , boggingwill causemisfiring , bogging
Intermittent Loss of Power jeremu Problems & Maintenance 14 05 - 05 - 2015 11:28 AM legacy gt brakes vs aftermarket xt brakes CZ06XT Wheels , Tires , Brakes , & Suspension 15 01 - 29 - 2015 11:28 AM Intermittent High Speed Vibration and slight power lossCausesIntermittent Loss of Power jeremu Problems & Maintenance 14 05 - 05 - 2015 11:28 AM legacy gt brakes vs aftermarket xt brakes CZ06XT Wheels , Tires , Brakes , & Suspension 15 01 - 29 - 2015 11:28 AM Intermittent High Speed Vibration and slight power loss
to normal on your transmitteris setto normal on your transmitter
to SuccessLedto Success