November 2021 Archives - UnderhoodService
New Oil Specifications

Many 0W16 oils have a new donut certification mark on the bottle called API SN-PLUS and SN-PLUS Resource Conserving.

Air Conditioning Components

When a compressor fails the question for most technicians is whether to flush the condenser or replace it.

Improving Turbocharger Longevity

It is estimated that by 2022, 50% or more of vehicles sold in the U.S. will have one or more turbochargers under the hood.

Ford Power Steering Inoperative After Collision Damage Repair

Here are the case details behind a message center displaying a “STEERING LOSS STOP SAFELY” warning message.

Ford: Permanent Diagnostic Trouble Codes (DTC’S)

A Permanent DTC can only be cleared by the module strategy & cannot be erased by clearing with a scan tool.

Ignition Diagnostics

This part of the cycle is when the mixture of air and fuel ignites and how the flame front spreads in the cylinder.

Veterans and Vehicles – You are in good company

Since 1931 we have chronicled the sacrifices and successes veterans have made for our country and the auto care industry.

Seasonal Fuel Blends

The cause of the misfires is the temperature fuel evaporates, otherwise known as the volatility.