Engine Stalling

• Nearly 20,000 2002 and 2003 Acura minivans coupes, sedans and sport utility vehicles powered by V-6 engines may have a water pump timing belt tensioner pulley that is misaligned. The belt could be damaged by touching the cylinder head, causing the engine to stall. The water pump and timing belt may need to be replaced, according to Motor Trend.
  
  

Coil Wire

• More than 165,000 late-model Acuras may have a faulty coil wire inside the fuel pump relay that may cause the fuel pump to fail. The engine will not start if the fuel pump is inoperative. It should be inspected by an Acura dealer and replaced if necessary.
  
  

High-Pitched Grinding

• Acuras that burn oil and may exhibit a high-pitched metal grinding noise should not be driven. The symptoms indicate a serious internal engine problem that could lead to engine failure if the car continues to be driven. An authorized Acura dealer or competent mechanic should examine the engine, according to 2carpros.com.
  
  

Bad Battery

• Often Acuras that do not start, or have intermittent starting problems, are not experiencing any serious engine issues. If starting problems can't be duplicated by the mechanic, it could be something as simple as a bad battery or faulty wiring in the coil. Neither is an expensive problem to fix.
  
  

Radiator Problems

• Acura owners experiencing cooling problems may see the temperature gauge fluctuate and the radiator fan not engaging properly. The problem may be a sensor or the onboard computer circuit and relay board. An easy remedy is to check the 15 and 25 amp circuit protector fuses, which should be colored red, yellow or blue. If these fuses are blown, they can be replaced at little cost.
  
  

Clogged EGR Ports

• A common problem among Acuras and its sibling, the Honda, are clogged EGR ports. Symptoms of clogged ports are rough idle, poor gas mileage and an illuminated check engine light. The ports are located at the top of the engine manifold and may be clogged as a result of a design flaw that made the ports too small. The ports can be cleaned by an Acura dealer, according to carcomplaints.com.
  
  

Misfires

• An Acura engine that is missing, backfiring or has a rough idle may only occur once the engine is warmed up. Following a cold start, the engine may run well until the thermostat opens to cool the engine. Acuras are quipped with an ECU sensor that will enrich the fuel/air mixture when the engine is cold. If it fails, the engine remains in a cold start mode and floods with too much rich fuel. The ECU sensor should be replaced, according to hondacarforum.com.