Author: Tim Hollenshade

Image of pistols with gasoline and diesel fuel at a car gas station
07 Jul

Diesel Emissions of Passenger Cars

With many of the worlds largest car manufacturers in the eyesight of regulators for their misleading published emissions output figures, we would like to share some information about the topic. Presently, the main driving standard for emissions output by vehicle powertrains are the US EPA Tier 2 and California LEV-II ULEV regulations. In 1999, the […]

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brake rotor blog post hollenshades
08 Mar

Brake Rotors: 5 Questions You Might be Afraid to Ask

Does a rotor need to be machined? No. What causes a rotor to crack? Brake Rotors do not crack from hitting a pothole or curb; they break due to the stress of heat and cycling from hot to cold. Also, mechanical stresses from stopping the vehicle can play a part. Every time the brakes are […]

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wheel alignment after collision hollenshades auto repair
05 May

Wheel Alignment Following an Impact or Collision

Wheel Alignment After a Crash Collisions with potholes, curbs and other objects are inevitable on the roads today. While body damage can be easy to spot, damage to the suspension and safety systems of a vehicle can be more challenging to identify. Much has changed over the last decade or two when it comes to […]

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oxygen sensor hollenshades auto repair
05 Mar

Oxygen Sensor Basics

What is an Oxygen Sensor? Many  people  are  mystified  about  the  workings  of  that device  in  the  exhaust  system  called  the  oxygen  sensor (02S). How  does  something  in  the  exhaust  stream generate voltage  and  help  the  engine  control  module (ECM) to  adjust  the  air/fuel mixture?  What  makes  an 02S go bad? The  heart  of  a  typical  […]

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Automotive wheel bearing image on Hollenshade's automotive services website
05 Feb

Why Wheel Bearings Fail

The inside of a bearing can be a hot place. When a bearing is cooling off, the contracting metal, air, and lubricant, can create a vacuum that is hopefully held by the seals. If the seals are worn and can’t hold the vacuum, the bearing or sealed hub unit will suck in outside air, debris, […]

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12 Feb

Brake Noise Causes

Some vehicles exhibit brake related concerns such as brake noise, brake judder or brake dragging. If you encounter a situation that causes you to experience one of these symptoms you should seek a professional mechanic to inspect your vehicle’s brake system. An experienced technician will address the specific brake symptom that is causing the concerning […]

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damage catalytic converter
09 Jan

What Damages a Catalytic Converter?

Engine misfires that are not repaired promptly are the number one reason for damaged catalytic converters. A broken engine cylinder can damage the catalytic converter in a car, shortening its lifespan by several years. In some cases, it may even cause the converter to melt down completely. What is a Catalytic Converter? An emissions control […]

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Vehicle Air Conditioning Repair Service image on Hollenshade's website
07 Apr

Car Air Conditioning Service

Proper service provides drivers value and reliable operation from their car’s air conditioning system. Refrigerant Level   Leak Detection Electrical Diagnosis Sensor Monitoring

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