Search found 321 matches

by Fat Freddy
Tue Mar 12, 2013 9:23 am
Forum: Diagnostic discussion
Topic: Parasitic draw test
Replies: 6
Views: 5935

Re: Parasitic draw test

Can you post your file up?

FF
by Fat Freddy
Thu Mar 07, 2013 9:39 am
Forum: Help me fix my car
Topic: 2003 Clio P0170
Replies: 35
Views: 32237

Re: 2003 Clio P0170

Hi Just a couple of tips: I need to start earlier in the frame to catch ALL of the WOT You really need to increase the time per division (Top left of the screen). At the moment you have it at 500mS (a total of 5seconds across the screen), which is a bit short for this type of capture. Try increasing...
by Fat Freddy
Tue Feb 26, 2013 4:35 am
Forum: Diagnostic discussion
Topic: An ignition question
Replies: 11
Views: 7891

Re: An ignition question

VR CKP sensor Yer. I had thought about that before posting. I don't use AC coupling myself as I want to know exactly whats happening. The rejection of low sigal frequecies is probably what bothers me. AC coupling. In this mode, the scope device rejects very low signal frequencies below about 1 hert...
by Fat Freddy
Tue Feb 26, 2013 3:34 am
Forum: Diagnostic discussion
Topic: An ignition question
Replies: 11
Views: 7891

Re: An ignition question

AC coupled on channel C?


HTH
FF
by Fat Freddy
Mon Feb 25, 2013 12:02 pm
Forum: Case studies
Topic: Lotus Esprit with low compression
Replies: 40
Views: 67805

Re: Lotus Esprit with low compression

Bump!
Resolve?
Lol.

FF
by Fat Freddy
Fri Feb 15, 2013 5:55 am
Forum: Diagnostic discussion
Topic: New coil + Ign module
Replies: 26
Views: 17662

Re: New coil + Ign module

no PCM, its an old 1983 Ford mustang 2.3 pinto, with a carb & conventional ignition system My apologies. :oops: You did say that at the start. The GM module sent me off. ie. How is it possible for the coil current to still be 6A after the PCM has removed ground path. I assume this from what is bein...
by Fat Freddy
Thu Feb 14, 2013 8:01 am
Forum: Diagnostic discussion
Topic: New coil + Ign module
Replies: 26
Views: 17662

Re: New coil + Ign module

The module is a GM hei unit with built in current limiter Is this a DFI with EST and bypass control? What was the original fault? Have you looked at the IC from the PCM. And for interest. Here's a similar capture from a Mazda, new coil and module also. As far as I got was it appeared to be caused b...
by Fat Freddy
Thu Feb 14, 2013 7:30 am
Forum: Diagnostic discussion
Topic: I.A.C Valve????
Replies: 26
Views: 15500

Re: I.A.C Valve????

Thanks guys. I wasn't too sure if I had it right.

And a nice bit of extra info on error detection there. Thanks Kim


FF
by Fat Freddy
Tue Feb 12, 2013 3:11 am
Forum: Diagnostic discussion
Topic: I.A.C Valve????
Replies: 26
Views: 15500

Re: I.A.C Valve????

Oh crap, sorry I didn't read your post before posting my response. I agree with you completely. :lol: :lol: :lol: Voltage spikes indicate current flow Would this only apply where an inductive circuit is operating correctly? In other words the lack of a spike could indicate poor current flow or a sh...
by Fat Freddy
Tue Feb 12, 2013 2:26 am
Forum: Diagnostic discussion
Topic: New coil + Ign module
Replies: 26
Views: 17662

Re: New coil + Ign module

That current bounce looks a bit odd. It appears to stop/slow down the coil collapse.