13 Alternator and Battery Testing and Diagnostic Tips by Underhoodservice.com

January 28th, 2016

Article written by Underhoodservice.com

  1. One Test Is Not Enough

If only battery voltage is present at the battery on a running engine, does this mean the alternator is “bad?” No, it does not. That only means that the alternator is not charging, but does not reveal why. Therefore, it does not prove a faulty ­alternator. All too often the ­alternator is condemned by ­technicians due to this test alone.

 

  1. Look It Up

For some, it’s normal to see as high as 16 volts for long periods at a time. For others, it’s ­normal to see as low as 13 volts. For some, a constant 13.6 volts is an indication of a problem. Still yet, it’s perfectly normal for others to see the alternator not charge at all intermittently. Some alternators are controlled only with an internal or external regulator. Some are controlled only by the PCM. Still yet, others are controlled by a voltage regulator and the PCM. Not knowing what controls what, and how it is supposed to function, can’t cause a ­misdiagnosis or cause a critical problem to be over looked. Take the time to look at the service information.

 

 

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The New Robinair 34788NI and 34788NI-H Comparison Chart to the 34788 and 34988

February 22nd, 2015

Confused on all the different Robinair R134a Recycle Reclaim and Recharge service machines when trying to make a purchasing decision? Here is a link to the comparison chart direct from Robinair’s website. Tried to find a video but I see nothing yet on the Robinair website or Youtube. Hope this helps! Robinair AC service center comparison chart

ROB-34788NI Robinair 34788NI Premier Refrigerant Recovery MachineROB-34788 Robinair 34788 R-134A Refrigerant Recycler Cool TechROB-34988 Robinair 34988 Premium Cool-Tech Center

34788NI               34788                 34988

AME 67300 Nut Buddy Lugnut Remover

February 21st, 2015

Features:
Busts loose the most stubborn wheel nuts
Use on commercial or agricultural wheels
Gear ratio: 58:1
Rated output torque: 2950 ft lbs
Includes 1-1/2in (38mm) and 1-5/16in (33mm) sockets

AME-67300 AME 67300 Nut Buddy Lugnut Remover

 

Midtronics: Diagnotics Charging 101

January 14th, 2015

My Heater in my car only works on one speed. How to fix.

November 18th, 2014

lA common problem among vehicles is heating concerns.  In this article we will discuss what occurs when your vehicle’s blower motor won’t run or will only run on one speed.  We will discuss how you can test this and fix the problem.

When your blower motor doesn’t work most people just assume that the blower motor is at fault.  This is not true and can lead you to waste money on replacing a blower motor that will not fix your problem.  In order to understand how to diagnose and fix the problem we must first understand how a blower motor circuit works.

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Checking your starting system on your vehicle

July 19th, 2014

starterChecking your starting system on your vehicle One of the most common problems on vehicles is that they simply will not start.  There are several different factors that can affect whether or not your vehicle will start.  In this article we will discuss some simple tests that will allow you to test your entire starting system.  This will help you save money and do it yourself. Ok, the only real tool that you are going to need to test your starting system is a simple multimeter.  You can use a simple multimeter such as this ATD5536 Digital Multimeter or as advanced as this FLU885 Fluke 88 Multimeter.  Either one of these meters will work to properly check your starting system. Read the rest of this entry »

Private Brand Tools at the 2014 ITEG Expo New Product Introduction

June 24th, 2014

 

Bill Scully from Private Brand Tools introduces  the  PBT 70915 Brake Pad Spreader  ,  70900 Cam Clamp Kit ,  70990 Stretch Belt Mate Kit    and the  70913 Master Ratchet Pump Fluid Evacuator

View this Video on YouTube!

PBT new product

Mastercool 69788 Tutorial Video

June 12th, 2014

Looking to make the right decision when purchasing Automotive Air Conditioning Reclaimers? I hope this video for the Mastercool 69788 helps out and also see Robinair 34788 and 34988 Robinair Comparison Videos

MasterCool 69788aMST-69788A Mastercool Recovery Recycle Recharge AC Air Conditioning Machine

See Also Robinair Comparison Videos

U Scan CP9599 Code Scanner for your Smartphone Video Tutorial

June 11th, 2014

KAL-CP9599 Actron U Scan CP9599 Diagnostic for your Smartphone

The New Actron U Scan CP9599 Diagnostic

Scanner for your Smartphone!

How to Bleed Your Brakes Using A Mityvac MV8500 Brake Bleeder and Without

June 11th, 2014

   MTY-MV8500 Mityvac MV8500 Silverline Elite Automotive Test Kit Brake Bleeder

How to bleed your brakes one man operation with a Brake Bleeder Vacuum Pump or Without a Vacuum Pump needing a  two man operation 

When it comes to your vehicle one of the most crucial system is your braking system.  After years of driving your brakes can become weak or spongy, and not be as responsive as they should be.  To solve this problem all it takes is a little money, some time, some skill, and some patience.  I am not going to say that ever person can do this project, but I would say for someone who has had some technical experience with vehicles this task can be accomplished.  Just remember when starting this project to allow for lots of extra time, because it is better to do something slow and take your time, rather than have problems because you hurried through it. I will start by explaining the principle behind brake bleeding.  Your brake system is a basic hydraulic system.  This means that it is operated by pressurized fluid; however, after time this fluid can break down or get air in the system which leads to a decrease in braking performance.  This air can come from a old brake fluid which has boiled and caused air to get into the system.  To correct this problem the vehicles brake system needs to be bled of all and any air which may have leaked into the system over the years.

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