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#1 |
Senior Member
![]() Join Date: Dec 2003
Location: Pampa, Texas
Posts: 1,554
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Tach on new distributorless ignitions??
How do you hook up a tach on a distributorless ingnition motor.....got a sand rail with a 98 ford 4 cylinder in it and was wondering how i hook up a tach...no distributor??? anyone done this??
Thanks Rick
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#2 |
OBS guy
Join Date: Jun 2004
Location: SoCal
Posts: 1,060
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You can use a magnetic pickup. Not sure of the implications, but I know this pickup can be used for the tach signal. Think it measures crank rotation by the harmonic balancer somewhere.
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#3 |
Registered User
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
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The Ford 2.3 in the Ranger gets it's rpm signal from the crankshaft position sensor to the computer ( PCM)
Ford calls this signal the PIP ( profile ignition pickup) The factory tachs in these pickups use a tach signal sent from the pcm to the gauge cluster. I'm not sure if an aftermarket tach would be able to operate properly using this same signal or not?
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#4 |
Registered User
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
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oops. I guess I didn't read your post very well. I thought you said you had a 4 cyl from a 98 Ford Pickup. Anyway, if it's from a car, the DIS ign systems all operate basically the same way.
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#5 |
Senior Member
![]() Join Date: Dec 2003
Location: Pampa, Texas
Posts: 1,554
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it is from a pickup...where would the signal come out at?? would there be markings on the pcm??? does anyone have a diagram for this??
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#6 |
Registered User
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
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If you're using the original Ford wiring harness, The 104 pin connector that
goes into the PCM should have very small numbers on the back side that correspond to each pin. The tach signal wire out of the pcm is a tan wire with a violet stripe. It comes out of pin 48.
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#7 | |
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Join Date: Feb 2003
Location: Mesquite, Tx
Posts: 396
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Quote:
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#8 |
Registered User
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
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Yea, I work on Fords for a living. I figure that a good doctor needs to be where the sickest patients are
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#9 | |
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Join Date: Feb 2003
Location: Mesquite, Tx
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Quote:
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#10 | |
Registered User
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
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Quote:
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