Ignition System Diagnosis

The ignition system is designed to convert battery voltage into the high voltage required to ignite the air/fuel charge in the cylinders. There are two basic types of ignition systems as defined by SAE: Electronic Ignition (EI) and Distributor Ignition (DI). Although both types are electronic, SAE assigned the term ‘Electronic Ignition’ exclusively to distributorless designs. In contrast, Distributor Ignition… Read More

Subaru P0420 Catalyst Efficency

There are two DTCs present – P0325 for Knock Sensor 1 Circuit, and P0420 Catalyst Efficiency Below Threshold (Bank 1). The knock sensor DTC was a straight forward diagnosis. The pigtail for the sensor was damaged. The Catalyst Efficiency DTC is another matter. The part is very expensive and the net result to the customer of replacing it in this… Read More

Portland Mechanics | Quality Auto Repair

MDH Motors is your local family owned repair shop for reasonable automotive repair. We offer an awesome $40.00 an hour labor rate and have low mark up on your replacement parts. Martin Hand has over 13 years in experience in Asian and European Import auto repair and has been a L1 ASE Master Technician plus ATRA Certified for 10 years.… Read More

Subaru Headgasket Repair $900.00

Portland Mechanics MDH Motors is offering Subaru Headgasket repair at or around $900.00. I have specialized in these vehicles for over 15 years and can offer a decent repair cost for you today. Prices may be less or more depending on what is replaced during the engine repair. There are a lot of parts involved in this repair that are… Read More

Subaru Headgasket Failure

Subaru head gasket failure Two types of engines, two types of problemsThis site contains  information and hopefully some helpful explanations regarding head gasket problems with Subaru 2.5 liter normally aspirated (non turbo) engines. There are two types of engines, Phase 1 and Phase 2. Both variants can have head gasket problems associated with them, but the problems, how to diagnose… Read More

How to know if you need a clutch?

Transmission Clutch Diagnosis Diagnosing clutch noise and slippage is pretty straight forward. Once a technician understands the different parts and theory it’s easy to locate the culprit. Typical symptoms include clutch slipping, chatter, and dragging. Here are a few symptoms, tests, and the relevant parts to look out for: Slippage: This is by far the most common problem. To diagnose… Read More

We are now offering an AC Service & Repair

heating-airconditioning align=We are now offering an Air Conditioning Special
R-134a system re-charge and performance tests $69
R-12 to R-134a retrofit conversion $149 Read More

Cooling System Problems?

Check engine light on, thermostat/coolant temperature sensor failure Tutorial: Thermostat Assembly Replacement Vehicle: 2004 Audi A-4 Quattro 1.8L Turbo   This vehicle has no drivability concerns at all. the check engine light is on with the codes displayed above. CTS (coolant temperature sensor) signal values are within range in relevance to the ambient temperature. The reason for the diagnostic trouble… Read More

Subaru’s Common Failure

Common problems and failures you can expect when owning a Subaru COMING SOON!!!!

When to change your engine oil

When is my Oil Change really due? When asked, you may hear answers such as every 3000, 5000 or 7500 miles, or when the vehicle’s oil monitor indicates that this service is necessary. It is no wonder consumers are confused. The simplest answer… well, there is no simple answer! In fact, there is no interval that applies to most vehicles.… Read More