What does it mean when your engine hesitates to start?

What does it mean when your engine hesitates to start?

To give you some initial ideas, although there are many causes of hard starting illustrative causes include a faulty engine coolant temperature switch (sensor), malfunctioning idle air control (IAC) valve, vacuum and EGR leaks, inadequate fuel delivery or pressure (clogged fuel filter, injectors), and contaminated or …

Why does my car have hesitation?

A vehicle that hesitates while accelerating or while driving up a hill may have a weak fuel pump. Fuel injectors may become dirty over time and not be able to provide as much fuel to the cylinder as is needed. Dirty fuel injectors may cause the engine to run lean which will in turn, cause hesitation when accelerating.

Are there any problems with the Toyota Sienna?

Many Sienna owners successfully resolve this issue by replacing it with an OEM metal cooler pipe (Part No. 15767-31020 ). Shift Lock Solenoid Failure: The shift lock solenoid in 2004-2009 Siennas is prone to failure, which allows the driver to move the shift lever out of the park position without depressing the brake pedal.

What causes Toyota Sienna engine to turn to sludge?

As a result, the trapped heat can cause the oil to turn to sludge. In 2007, Toyota agreed to cover the costs to repair 1998-2002 Sienna engines damaged from oil sludge. They also reimbursed the affected Sienna owners who had already paid for engine repairs. Broken Door Handle: This happens to many 1997-2002 Sienna owners.

Why is the sliding door on my Toyota Sienna not working?

Sliding Door Latch Failure: The sliding door in in this generation of Sienna minivans comes with a latch that doesn’t always do its job. This causes the door to not open when commanded and triggers the door to open at unexpected times, including while the van is in motion.

What causes Toyota Sienna to roll out of Park?

Shift Lock Solenoid Failure: The shift lock solenoid in 2004-2009 Siennas is prone to failure, which allows the driver to move the shift lever out of the park position without depressing the brake pedal. This causes the minivan to unexpectedly roll out of position.