Trouble Ticket Help Requests for DTC P0172
|1999 Chevrolet Tahoe LS 5.7L MIL Lamp on, Intermtnt hard start VIN: 1GNEK13RXX
P0172: Fuel Trim System Rich (Bank 1). ... p0172 and p0175. Intermittent hard to start cold. Fuel injection unit updated to mpi about 6 months ago to correct rich codes. Customer does not drive truck much, but cel came on last week, only 1300 miles since repair. Testing fuel pressure is good, but w...
|May 05, 2014|