1996 Jeep No Start Case Study Part I
An example of what we do at Rosedale Technical Institute in Pittsburgh, PA.
This is an all live work school, no make-believe car problems here! My
students and I used this oppurtunity to review certain concepts and testing
proceedures written in an Engine Performance/Troubleshooting book I wrote
for my class.
Crank Sensor Quick Fix
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Crank Sensor Quick-Fix
There are two types of crank sensors, and two types of tests, the 2 and 3
wire sensors. Here are the flash points for the crank sensor testing.
1) The 2 wire crank sensor generates a voltage, and is quick tested with a
2) To test the two wire sensor, disconnect the crank sensor, ignition key
on, hook the test light to battery power, and tap at each crank sensor
terminal repeatedly. A spark click and injector pulse should be seen.
3) The 3 wire sensor has its own circuit, with 5 to 8 volt power, ground,
and signal wires. Identify the signal wire using volt meter or diagram.
4) Take the test light and connect to battery ground. With key on,
disconnect crank sensor, and repeatedly tap on the signal wire. You should
hear a spark click and injector noid pulse.
These are to test the ECM crank sensor circuit response. On both tests, you
should see a spark click and injector pulse. Crank sensor is the main input
to the ECM. If ECM working, then the crank is the only other issue. There
are other ways to test, but involve an oscilloscope and more complex. This
concludes the cranks sensor Quick-Fix.
Check Engine Light and Cam Sensor - AutoZone Car Care
e-Reader/_/N-25iq In the third installment of the AutoZone Complete Car
Care - Check Engine Light Series, Bruce Bonebrake shows you how to
troubleshoot the Camshaft Position Sensor. Learn how to use this
information to diagnose and target the cause of your vehicle's check engine
Engine Won't Start - No Crank Diagnosis (Troubleshooting Starting System Issues)
In this video I show you how to diagnose a no crank condition on a 1997
Honda Accord but the techniques shown here can be used on any vehicle.
A no crank means when the ignition switch is turned to the start position
the starter doesn't crank the engine.
To troubleshoot this issue I cover battery testing with a load tester,
solenoid trigger wire testing, and voltage drop testing with a multimeter
on the power and ground side of the starter.
I also cover how a relay works, how the starter solenoid works, and explain
what the neutral safety switch is and how it's incorporated into different
start circuit designs.
Starter Replacement Video for this Accord:
Intro and outro music Welcome To The Show by Kevin Macleod
Due to factors beyond the control of Bushougoma, it cannot guarantee
against unauthorized modifications of this information, or improper use of
this information. Bushougoma assumes no liability for property damage or
injury incurred as a result of any of the information contained in this
video. Bushougoma recommends safe practices when working with the tools or
equipment seen or implied in this video. No information contained in this
video shall create any express or implied warranty or guarantee of any
particular result. Any injury, damage or loss that may result from improper
use of these tools, equipment, or the information contained in this video
is the sole responsibility of the user and not Bushougoma.
How to Test Crankshaft and Camshaft sensors 1
How to Test Crankshaft and Camshaft sensors 1
Amazon Printed Books
Amazon Kindle Edition
Shows the operation and testing procedures of automotive cam and crk
sensors, which supply the ECM with engine camshaft and crankshaft position.
These two signals are essential for the engine to run. (note: We allow all
schools and training institutions to use our software free of charge, so
long as it is not sold to others. You're encouraged to download our free
automotive simulation software for more information.
Amazon Printed-Books & Kindle:
Google Play Android APPs:
Amazon Video DVDs:
Barnes & Noble Nook:
Apple iTunes iPad:
How to test an electric fuel pump
2001 GMC 3500 8.1L engine with no fuel pressure. In this video I am showing
how to test the fuel pump electrical circuit using a test light and scan
Ford Taurus Cam Sensor Problems
This is a common problem on Ford systems that use this style of camshaft
sensor. In particular the 3.0 and 3.8L engines.
No Crank, No Start Diagnosis - EricTheCarGuy
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Whenever you have a no start condition when attempting to start your
vehicle it's important to make the distinction between "no crank, no start"
and "crank, no start" situations as they are treated differently. This
video covers what I do when confronted with a 'no crank, no start'
situation and in this case it's a worst case scenario so be sure to watch
till the end.
Starter diagnosis video
No start basics video
Parasitic draw video
Click below and Stay Dirty
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2000 Chevy Malibu MAF Ground problem
This is a good video on how to check sensor grounds using a voltmeter. Once
you get more comfortable with this type of testing, it is far more accurate
than the ohmmeter. The key though is to make sure the circuit you are
testing is "loaded".
Also to all of you "free diagnostics" parts supply companies. YOU CANNOT
CHANGE A PART BASED ON A TROUBLE CODE!!!!!