General signs:
*Increasing automatic transmission temperature
* Gear slippage
*Difficulty shifting gears
* Jerks or jolts when changing gears
* Hum or howl from automatic transmission
Specific signs of a faulty oil pump:
* Reduced oil pressure: Can lead to insufficient lubrication and cooling of automatic transmission components, causing premature wear.
* Oil leakage: May result in loss of oil pressure and damage to the automatic transmission.
* Damage to pump gears: May cause low oil pressure or complete pump failure.
* Dirty oil filter: May restrict oil flow and reduce oil pressure.
* Pump bearing wear: May cause noise, vibration and premature wear.
Additional signs that may indicate a faulty oil pump:
* Burnt smell from automatic transmission
* Metal particles in automatic transmission oil
* Difficulty starting the engine
* Engine overheating due to faulty automatic transmission cooling