2012 Chevrolet Cruze
Mileage
87,422
Service Date
10/21/2021
Services Performed
- Removed and replaced both oxygen sensors, cleared codes, performed O2 sensor reset procedure. Road tested vehicle while monitoring live data, found O2 sensor erratic at times, re inspected for possible other cause of lean condition, see additional oil fluid leak line for further explanation on issues found.
- Road tested vehicle 10 miles found valve cover to be leaking and check engine light return with code p0131 for oxygen sensor circuit low voltage sensor 1. Retesting a oxygen sensor confirming it is functioning, but fuel trims are off the charts both short-term and long-term hit and 35 positive. Found tsb's for intake manifold that need to be performed and cylinder out of round. Removed spark plugs inspected cylinder walls wth borescope, found grooves cut into cylinders but found no signs of out of round. Confirm that valve cover is leaking oil. Due to internal cylinder damage, causing excessive blow-by, causing erratic O2 sensor readings, loss of oil due to leaking valve cover gasket ( caused by excessive internal engine blow by). Recommending engine rebuild or replacement.
- Unable to duplicate customers described concern at this time.
- Pressure test coolant system and found a crack in the water outlet causing the leak. Also noticed the upper radiator hose and oil cooler hose is swelling due to oil leaks. Recommending to replace the water outlet. along with oil cooler hose and upper radiator hose, re pressure test after repairs and road test to confirm repair.
- Remove water outlet in, found heater hose to be swelled was unable to see hose previous inspection. After installing water outlet found quick disconnect on water bleeder hose to be broken and hose itself to be swollen. Installed new bleeder hose, re pressure tested / road tested to confirm repairs.
Sandy T. gave our service a 5 star review on 10/22/2021
