Search found 708 matches

by Technician
Mon Nov 14, 2016 10:35 pm
Forum: Diagnostic discussion
Topic: Volt drop testing using scopes
Replies: 26
Views: 29380

Re: Volt drop testing using scopes

Thanks Andrew,

I only ever came across the idea because it was an examination question, multiple choice.
by Technician
Mon Nov 14, 2016 10:28 pm
Forum: Introductions
Topic: Hello Everyone.
Replies: 1
Views: 3502

Re: Hello Everyone.

welcome aboard :)
by Technician
Mon Nov 14, 2016 10:27 pm
Forum: Introductions
Topic: Hello
Replies: 3
Views: 5982

Re: Hello

welcome aboard :)
by Technician
Mon Nov 14, 2016 10:26 pm
Forum: Introductions
Topic: Hello
Replies: 4
Views: 6643

Re: Hello

welcome aboard :)
by Technician
Mon Nov 14, 2016 9:04 pm
Forum: Help me fix my car
Topic: P1191 Opel Vectra Z22YH engine
Replies: 64
Views: 74195

Re: P1191 Opel Vectra Z22YH engine

Are we talking about Common Rail here?

Sorry missed the GDI part.
by Technician
Sun Nov 13, 2016 10:36 pm
Forum: Diagnostic discussion
Topic: Volt drop testing using scopes
Replies: 26
Views: 29380

Re: Volt drop testing using scopes

It is some 28 years since I studied auto electrics at college and although a wire is still and wire, electronics on vehicles have significantly changed in that time, we never had CAN, FLEXRAY, PWM signals etc back then, in fact the most up to date electronics back then besides the electronic ignitio...
by Technician
Sat Nov 12, 2016 9:50 pm
Forum: Diagnostic discussion
Topic: Volt drop testing using scopes
Replies: 26
Views: 29380

Re: Volt drop testing using scopes

Thanks Andrew, Reading back through Steve's scope school bonus class I understand now what the scope(s) are doing, initially I thought because previous electricians on forums have always referred to a bulb and voltage supply for volt drop testing, that the scopes were actually doing the same, howeve...
by Technician
Sat Nov 12, 2016 7:42 pm
Forum: Diagnostic discussion
Topic: Volt drop testing using scopes
Replies: 26
Views: 29380

Re: Volt drop testing using scopes

Hook , captain hook ? Left hook? Meat hook? Coat hook? What are we discussing? https://www.googleadservices.com/pagead/aclk?sa=L&ai=DChcSEwia78LC96LQAhXCt-0KHfLDDCoYABAS&ohost=www.google.co.uk&cid=CAASIuRoRpe7cDXkYUkxAiSfILgDRCzoX-u10KRQs5sJn0DXdcc&sig=AOD64_22lxj1lxuGncdY-OW7yK-X8MaZWw&ctype=5&q=&...
by Technician
Sat Nov 12, 2016 7:36 pm
Forum: Diagnostic discussion
Topic: Volt drop testing using scopes
Replies: 26
Views: 29380

Volt drop testing using scopes

From previous thread; Earlier this year I was renewing my aTa certification, during conversations a Master Tech advised that vehicles electronics after year 2005 should not have the wiring load tested by volt drop testing, he advised that this could cause problems with ECM's, he recommended using an...
by Technician
Sat Nov 05, 2016 6:52 pm
Forum: Diagnostic discussion
Topic: Rev counter mystery
Replies: 7
Views: 10225

Re: Rev counter mystery

HI, Technician, I was just wondering how the scope knows the crankshaft speed by looking at the alternator voltage across the battery as the ratio between alternator and crank pulley is not always the same. As I have to input the number of cylinders into the scope I am assuming it is looking at a s...