Ford Ranger 4.0 v6 DIS primary current

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Ford Ranger 4.0 v6 DIS primary current

Postby bonecrusher » Thu Mar 31, 2016 2:07 pm

Hello

This car hesitates and swithes off. There are no fault codes.

I am working on this v6 Ford Ranger with DIS ignition. I have connected the current clamp to the supply voltage for the coil. This is the pattern I have. I cannot make any sense of it Why does it have 2x (signal?) at times.
Attachments
ford v6 primary current  dis system.bmp
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Re: Ford Ranger 4.0 v6 DIS primary current

Postby volrem » Thu Mar 31, 2016 2:37 pm

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Re: Ford Ranger 4.0 v6 DIS primary current

Postby bonecrusher » Thu Mar 31, 2016 3:19 pm

Thanks,

It all makes sense!

Understand perfectly now!
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Re: Ford Ranger 4.0 v6 DIS primary current

Postby bonecrusher » Sat Apr 02, 2016 8:11 am

Hello Guys

Found the fault on this car. The crank sensor was at fault. It was adjusted too close too the pickup wheel, all I did was take it a few millimeters back and the car revs up. This makes absolutely no sense to me. I have attached pics of the CKP at idle. The pic with the higher amplitude is when the Car idles but does not rev/switches of as soon as the throttle is depressed.

1st pic everything works as is
2nd pic is when problem occurs

All waveforms taken at idle
Attachments
ranger pickup good adjusted to pullety note voltage at idle.bmp
ranger pickup bad too close to pullety note voltage.bmp
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Re: Ford Ranger 4.0 v6 DIS primary current

Postby Fat Freddy » Sat Apr 02, 2016 8:59 am

Looks like a damaged tone wheel to me. :shock:

Some one been sticking things where they shouldn't? What's history?

HTH
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Re: Ford Ranger 4.0 v6 DIS primary current

Postby STC » Sat Apr 02, 2016 8:12 pm

Capture -bad CKP.JPG


Psdata file with the sensor in its original (faltering) position from start up to cut out, with pedal position if easy enough to get would have been interesting to look at.
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