Misfire after replacing oil pressure sensor on 07’ LTZ
March 3rd, 2019, 6:11 PM
#1
Misfire after replacing oil pressure sensor on 07’ LTZ
So I replaced the oil pressure sensor on an 07’ Impala LTZ with the 3.9L and was satisfied to have remote start working again. Took it out for a test drive to see if the AFM was working and 2 minutes into the drive coming to a stop light the car suddenly bogged down and the check engine light starts flashing. Misfire, P0300. Now runs like a tractor with an intermittent (every 3 seconds or so) tapping valve noise, and backfires with heavy gas applied.
Did an AFM lifter collapse? Cylinder 6 isn’t firing, pulled that plug wire off while running and the motor didn’t sound any different. Tried unplugging the oil pressure sensor wire and disconnecting the battery, no help...
Any ideas to get this thing going again?
Did an AFM lifter collapse? Cylinder 6 isn’t firing, pulled that plug wire off while running and the motor didn’t sound any different. Tried unplugging the oil pressure sensor wire and disconnecting the battery, no help...
Any ideas to get this thing going again?
The following 2 users liked this post by Justin Pelan:
Bottie2 (January 26th, 2024),
Dakota_Don (November 7th, 2023)
March 3rd, 2019, 8:01 PM
#2
CF Monarch
So I replaced the oil pressure sensor on an 07’ Impala LTZ with the 3.9L and was satisfied to have remote start working again. Took it out for a test drive to see if the AFM was working and 2 minutes into the drive coming to a stop light the car suddenly bogged down and the check engine light starts flashing. Misfire, P0300. Now runs like a tractor with an intermittent (every 3 seconds or so) tapping valve noise, and backfires with heavy gas applied.
Did an AFM lifter collapse? Cylinder 6 isn’t firing, pulled that plug wire off while running and the motor didn’t sound any different. Tried unplugging the oil pressure sensor wire and disconnecting the battery, no help...
Any ideas to get this thing going again?
Did an AFM lifter collapse? Cylinder 6 isn’t firing, pulled that plug wire off while running and the motor didn’t sound any different. Tried unplugging the oil pressure sensor wire and disconnecting the battery, no help...
Any ideas to get this thing going again?
November 7th, 2023, 4:21 PM
#5
So I replaced the oil pressure sensor on an 07’ Impala LTZ with the 3.9L and was satisfied to have remote start working again. Took it out for a test drive to see if the AFM was working and 2 minutes into the drive coming to a stop light the car suddenly bogged down and the check engine light starts flashing. Misfire, P0300. Now runs like a tractor with an intermittent (every 3 seconds or so) tapping valve noise, and backfires with heavy gas applied.
Did an AFM lifter collapse? Cylinder 6 isn’t firing, pulled that plug wire off while running and the motor didn’t sound any different. Tried unplugging the oil pressure sensor wire and disconnecting the battery, no help...
Any ideas to get this thing going again?
Did an AFM lifter collapse? Cylinder 6 isn’t firing, pulled that plug wire off while running and the motor didn’t sound any different. Tried unplugging the oil pressure sensor wire and disconnecting the battery, no help...
Any ideas to get this thing going again?
November 7th, 2023, 5:03 PM
#6
@Dakota_Don that person hasn't visited the forum in 4.5 years. You're better off making a new topic and explaining your situation.
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