Subaru Archives - UnderhoodService
Inspection Tips For Chain-Driven Water Pumps

If one water pump fails sooner and is replaced without an investigation, the new pump is likely doomed.

Water pump feature
Subaru EJ25 Head Gasket Problems

Most of the EJ head gasket failures occur around the 100,000-mile mark and start as a slow oil or coolant leak.

Different Nameplates, Different Expectations

One thing Asian nameplates share is that the system voltage must stay in a specific range during the reflashing procedure.

Subaru PCV Hose Redesign

Always order the most up-to-date replacement parts based on the specific model.

Installing Subaru Stretch Belts

When a stretch belt exceeds wear specifications, it’s no longer able to grip the pulleys and will start slipping.

Subaru Stretch Belt Inspection & Replacement

If you see a belt on a late-model Subaru that does not have an automatic tensioner and runs between only two or three components, it’s probably a stretch belt. These types of belts typically are used to turn the A/C compressor on the 2.5L four-cylinder engine in 2008 and later models.

Subaru TPMS: Better Service These Direct Systems With Dedicated TPMS Tools

Subaru first started experimenting with TPMS in its vehicles in 2004 with the Subaru Outback and Subaru Legacy. The Subaru B9 Tribeca was outfitted with TPMS in 2006 and the automaker added TPMS to all of its other models in 2008. The TPMS on Subarus are direct systems. In order to properly service and reset these systems, it’s important that a shop invests in a TPMS tool that can interface through the OBDII port.

Subaru Forester Active Valve Lift System

Many thought the 2007 Subaru Forester had variable valve timing, even though it does not. Others were not aware of the ALVS that Subaru brought out in 2006. With that in mind, I’d like to share some insights into this very clever engine management strategy.

sohc engine subaru forester featured
Subaru Oil Temperature Lamp Flashing, Multiple DTCs

If you encounter a Subaru that has the oil temperature warning lamp flashing with a code stored in memory and possibly an intermittent stalling condition, it may be the result of contamination in the valve body.