Where is the high-pressure fuel pump located on the Highlander?
2 Answers
The high-pressure fuel pump on the Highlander is located on top of the engine, and this pump is generally driven by the camshaft. The relevant introduction to the fuel pump is as follows: Types of fuel pumps: A fuel pump is a lightweight and compact pump, which can be divided into three main categories: in-line, distributor, and unit type. The fuel pump requires a power source to operate, and the lower camshaft is driven by the engine crankshaft gear. Composition of the fuel pump: The fuel pump features a housing made of aluminum-containing material, with a movable molded part installed inside the housing. This movable molded part is at least partially made of a sinterable, iron-based alloy material containing at least one austenitic component.
I've worked on quite a few Toyotas recently, and I remember the Highlander's high-pressure fuel pump is usually located in the engine bay, on the right side of the engine, right next to the intake manifold. You can pop the hood and look from the front - it's typically a small metal or plastic box connected to the fuel lines. If you're having trouble locating it, I'd recommend checking the engine layout diagram in your owner's manual, as the position might vary slightly between model years. For instance, the 2018 model has it positioned closer to the driver's side. From my experience driving the Highlander, the placement of the high-pressure pump is crucial. If it's near high-temperature areas like the exhaust pipe, overheating issues can occur, leading to unstable fuel delivery that causes engine stuttering or even stalling. So if you're planning to inspect it yourself, make sure to turn off the engine and wait a while to avoid burns. When in doubt, I suggest taking a photo and checking online forums - it can save you a lot of hassle.