Tech Tip: Sealing Pipe Connections on Porsche Expansion Valve
Under certain circumstances, refrigerant loss from the area of the expansion valve pipe connections can be misdiagnosed as a defective expansion valve. As of production date October 1993, a longer bolt has been used in the installation of the A/C lines to the expansion valve. The new bolt is installed as a precaution to prevent the expansion valve from distorting, which could cause a leak at the pipe connections on the expansion valve.
Tech Tip: Shim Calms Chirping Noises in Honda Models
Some Honda owners may complain of a chirp from the lower timing belt area. The noise is most often noticed at idle, usually after the engine has warmed up. The probable cause is the idler pulley mounting surface is tilted, causing the edge of the timing belt to rub against the side of the pulser flange on the drive pulley (gear).
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.
Diagnostic Solutions: Conducting Non-Intrusive Cooling System Inspections
Perhaps the best way to begin when we get a cooling system overheating complaint in our service bay is by using a series of quick, non-intrusive cooling system tests that establish the basics without removing major parts.
Audi Tech Tip: Faulty Hose Composition Causes Odor on 2001-2006 Models
Audi owners may complain of an odd smell from the car. It may appear as if coolant is leaking from the coolant reservoir. A pressure test on the reservoir may reveal that the hose between the coolant reservoir and the engine is weeping coolant through the hose material.
Tech Feature: Diagnosing and Repairing Cooling System Leaks on Hyundai Models
Cooling system problems will present themselves in a variety of ways, and it’s important that your service writer has the skills to ask the correct questions that will help your techs make efficient repairs.
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.
Internal Engine Repairs: Uncovering the Culprits That Cause Head Gaskets To Fail
The first symptoms of a failing head gasket are usually a slow loss of coolant with no visible leaks, engine overheating and/or a check engine light with cylinder misfire codes. Uncover the culprits and prevent comebacks by following repair procedures to the letter.
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.
Porsche Engine Diagnostics: Misfire Codes, Fuel Trim Faults, Secondary Air Injection
Porsche has been building engines for decades that will literally fit in a suitcase, but are still able to put out horsepower that rivals many larger engines. Find out how to keep the Porsche Boxster engine running smoothly.
Tech Feature: Cooling System and Water Pump Service for the Nissan 3.5L V6
The cooling system on late-model Nissan Altimas and Maximas with the 3.5L V6 engine is similar to many other late-model vehicles in that the water pump is buried and typically takes two to three hours to replace depending on the model, year and your manual dexterity.