Tech Tip: Coolant Leaks, Head Gasket Issues on Toyota 2.2L Engines
Loss of engine coolant has been reported on some Toyota 2.2L 5SFE engines in various amounts. In most cases, there are limited signs of this leakage on the ground directly below the engine compartment after it has set for a long period of time.
Tech Tip: Engine Coolants Not Just Water and Green Dye Anymore
Using water only, the wrong coolant, an improper mixture, contaminated coolant, depleted coolant, or poor water quality can result in corrosion and seal damage, leading to premature water pump failure.
Tech Tip: Replacing Kia Sorento Coolant Reservior
Certain Sorento vehicles may overheat due to small cracks found on the bottom of the coolant reservoir due to repetitive temperature and pressure fluctuations. The new and improved coolant tank allows some expansion and contraction found in many pressurized cooling systems. This bulletin describes the proper service procedure for identifying and replacing the coolant reservoir tank.
Tech Tip: Coolant Leak from Intake Manifold Water Outlet on Nissan Frontier and Xterra Models
Vehicle owners may complain of engine coolant under the vehicle when parked or the smell of coolant when the engine is warm. The cause may be coolant leaking between the water outlet housing and intake manifold sealing surfaces.
Subaru: Coolant Comes Out of Reservoir
If you encounter a vehicle that experiences coolant coming out of the coolant reservoir tank, it may be caused by the radiator cap pressure valve being stuck open by debris sucked up through the reservoir tank hose.
Tech Tip: Sorento Coolant Reservoir Replacement
Some Sorento vehicles may overheat due to small cracks found on the bottom of the coolant reservoir as a result of repetitive temperature and pressure fluctuations.
Tech Tip: Saturn’s Slight Loss of Coolant/No External Leaks Evident
Some customers may comment that the low coolant light is coming on and/or the coolant level is low with no external leaks visible.
Tech Feature: Abnormal Engine Coolant Consumption or Coolant Leaks Found in Some GM 3800 Series II Engines
Some installers/customers may comment on excessive engine coolant consumption, or an engine coolant leak near or under the throttle body area of the upper intake manifold. This could be related to upper intake manifold composite material that may degrade around the EGR stove pipe and could result in an internal or external coolant leak.
Tech Tip: Volkswagen Coolant Leak at Oil Cooler Hoses
If coolant is leaking at the oil cooler hoses on a 1998-2005 2.8L V6 Passat, it may be caused by the oil cooler turning when removing or installing the oil filter. When replacing the oil filter, observe the oil cooler when loosening the oil filter. If necessary, hold the oil cooler while removing the filter. If the oil cooler moves too far, damage to coolant hoses may result ….
Tech Tip: Choosing the Right Coolant
What makes choosing the right coolant so confusing today is that the automakers themselves can’t agree on what type of coolant chemistry is best for their vehicles. Some vehicle manufacturers prefer one type of corrosion inhibitors in their coolants, while other vehicle manufacturers may insist on a different type ….