Search found 336 matches

by Fat Freddy
Fri Feb 15, 2013 5:55 am
Forum: Diagnostic discussion
Topic: New coil + Ign module
Replies: 26
Views: 31579

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: 31579

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: 29684

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: 29684

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: 31579

Re: New coil + Ign module

That current bounce looks a bit odd. It appears to stop/slow down the coil collapse.
by Fat Freddy
Sun Feb 10, 2013 10:01 am
Forum: Diagnostic discussion
Topic: Inductive peak to peak volts
Replies: 3
Views: 6639

Re: Inductive peak to peak volts

Found this capture today from an Audi showing 63V peak to peak @ 5300RPM
Image

HTH
FF
by Fat Freddy
Sun Feb 10, 2013 8:56 am
Forum: Automotive kit hardware
Topic: How to create reliable stable Current Drain
Replies: 13
Views: 21349

Re: How to create reliable stable Current Drain

Have you considered making your own resistive load using Nichrome wire? http://en.wikipedia.org/wiki/Nichrome
Same as your heater element but customised to your needs.

HTH
FF
by Fat Freddy
Thu Feb 07, 2013 2:09 am
Forum: Diagnostic discussion
Topic: I.A.C Valve????
Replies: 26
Views: 29684

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

Just had an IAC on a wrangler (TJ) (short on to fuel rail inside conduit, rail had pushed through split). 4 wire. Each pair was always switching so two high and two low. As a thought looking at yours I would thinking Brown/Green channels OK. Blue/Red open circuit somewhere after the IAC. But as Robs...
by Fat Freddy
Thu Jan 31, 2013 11:38 am
Forum: Diagnostic discussion
Topic: Vw golf 1.6 runs bad
Replies: 13
Views: 17246

Re: Vw golf 1.6 runs bad

Is the capture taken at normal operating temp ?
Has me thinking too. Thats one long injector duration.

FF
by Fat Freddy
Mon Jan 21, 2013 12:26 am
Forum: Diagnostic discussion
Topic: WPS waveforms
Replies: 16
Views: 22100

Re: WPS waveforms

Works out @ cyl #1 to me going by +1 rule....... I'm not sure what you're asking with the cranking compression capture ? Did you have the throttle wide open as you would with a gauge ? Rats! You beat me to it. To busy making pretty pictures. FF http://i232.photobucket.com/albums/ee88/Nobbyclrk/Miss...