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https://yabb.autonerdz.com/cgi/yabb2//YaBB.pl General Public Area >> PicoScope >> The power of the Pico https://yabb.autonerdz.com/cgi/yabb2//YaBB.pl?num=1210293201 Message started by Mick on May 8^th, 2008 at 4:33pm

Title: The power of the Pico
Post by Mick on May 8^th, 2008 at 4:33pm

Just thought I would share this 2004 Ford Freestar misfire on cylinder 1, code set for primary circuit. This engine is hard to access so I used the under hood fuse center for current of primary and connected a break out box and checked primary voltage the good coils showed this image scroll down to see both good coils

for_autonerdz1.gif (214 KB | )

Title: Re: The power of the Pico
Post by Mick on May 8^th, 2008 at 4:38pm

And this is cylinder 1 coil

no_primary.gif (96 KB | )

Title: Re: The power of the Pico
Post by Mick on May 8^th, 2008 at 4:55pm

Now I had to decide on the pcm driver.

From here I needed my measure measure measure routine

for_autonerdz2.gif (202 KB | )

Title: Re: The power of the Pico
Post by Mick on May 8^th, 2008 at 5:01pm

Shorted coil was replaced and this image was collected

new_coil_pack.gif (103 KB | )

Title: Re: The power of the Pico (1 pic = 10,000 words)
Post by joecar on May 9^th, 2008 at 6:52am

Hi Mick,

The good coil Pico images show 2 primary spikes for the ignition event... so does this car's controller fire twice in succession (am I interpreting correctly)...?

Thanks,
Joe

Title: Re: The power of the Pico
Post by Mick on May 9^th, 2008 at 8:37am

Yes Joe

Ford calls it multistrike to make sure all hydrcarbons are dealt with.

Mick

Title: Re: The power of the Pico
Post by joecar on May 9^th, 2008 at 9:45am

Thanks Mick... I'm limited to GM at the moment.

Title: Re: The power of the Pico
Post by Dave_Hill on May 11^th, 2008 at 1:32pm

Some more examples of multi strike ignition.

This animation starts at idle & reverts to a single event when the throttle is snapped. As it comes back down to idle the repetitive spark is reintroduced.

This expample is taken from a 2003 Ford, Ka 1.3 Duratec (UK vehicle)

Title: Re: The power of the Pico
Post by Mick on May 11^th, 2008 at 3:44pm

Hi Dave

What program did you use for the pico capture of multistrike?

Nice captures good job

Mick

Title: Re: The power of the Pico
Post by Dave_Hill on May 12^th, 2008 at 1:14pm

Hi Mick

I use Animation shop. It is bundled with Paintshop Pro. Must be easy cos I can do it ;D ;)

I could do a tutorial if there is a demand I suppose :o

Glad you like it.

Cheers for now

Dave (Hill)

Title: Re: The power of the Pico
Post by Mick on May 12^th, 2008 at 5:59pm

I am all ears, 8-) But not like Prince Charlie ;D

Mick

Title: Re: The power of the Pico
Post by Dave_Hill on May 14^th, 2008 at 11:28am

Mick wrote on May 12^th, 2008 at 5:59pm:

I am all ears, 8-) But not like Prince Charlie ;D

Mick

Hehehe. ::)

If you can be patient I will work on something that might help with animated waveforms. They do bring an extra dimension to the learning process I think.

Cheers fellas

Dave (Hill)