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12-07-2014, 08:23 PM | #1 | |
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2000 Impala P0102 problem (3.4L)
The engine surges, especially when it is cold outside. The engine runs fine once it is up to operating temp. I have taken everything out from the throttle body to the air cleaner and sprayed it all down with either a carburetor cleaner or MAF Sensor spray where appropriate. I keep getting the P0102 code indicating the MAF is bad so I replaced it. Made no difference at all. The code reader says low air volume so I ran it without the air filter, only in the driveway, still same code. Any ideas or troubleshooting techniques I could try? Thanks!
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12-08-2014, 06:24 AM | #2 | |
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Re: 2000 Impala P0102 problem (3.4L)
Check the condition of the electrical connector for the MAF. I've had these and the TPS connectors fail on this vintage Buick V-6.
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12-14-2014, 07:52 PM | #3 | |
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Re: 2000 Impala P0102 problem (3.4L)
Update: I changed the MAF and still the same problem. IO used a friends ODBC reader and see the reading is 1.9 g/s. This reading is constant even if the sensor is disconnected. So I think I have a wiring problem. Does anyone know what pin the MAF sensor connects to the ECU? I have voltage on the red and black but no reading on the yellow.
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05-05-2015, 09:37 PM | #4 | |
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Re: 2000 Impala P0102 problem (3.4L)
UPDATE - The problem was the connector for the MAF sensor. Broken inside the connector. Any one need a MAF sensor?
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