99 f350 12v tach problems
#1
99 f350 12v tach problems
trying to get my tach working
I am not going to go to destroke or ford cummins half the fun of doing a conversion is figuring it out
I tied the dodge setup didn't work
so I did the ford setup with the cam sensor take #85 the cam sensor wire and the #48 wire the tach wire and wire them together before pcm
wondering it I might have the sensor to close to the harmonic about .030
I ground in the 2 extra notches so I have 4
I tested wire from sensor to the pcm block I haven't tested the other to the tach yet
I am not going to go to destroke or ford cummins half the fun of doing a conversion is figuring it out
I tied the dodge setup didn't work
so I did the ford setup with the cam sensor take #85 the cam sensor wire and the #48 wire the tach wire and wire them together before pcm
wondering it I might have the sensor to close to the harmonic about .030
I ground in the 2 extra notches so I have 4
I tested wire from sensor to the pcm block I haven't tested the other to the tach yet
#2
That's how I have mine set up and it works, but I want to check it at cummins with an optical tach to see how close it is, seem like it's a couple hundred rpm's too high on the gauge. I used a 99 escort crank sensor ($19.99 @ orielly's), but I think any two wire sensor will work. I'll try gettin a pic of the mount, but from reading other thing you figured out, making a mount will be no prob!
Last edited by timdale; 04-19-2012 at 07:19 PM.
#5
well that might be the issue I am sure I am at .040 I will set it to .018 tomorrow
---AutoMerged DoublePost---
it works !!!!!! timdale was 100% right on about the .018
tie 85 and 48 togethere before the pcm hook one wire at sensor and the other wire will go to #85 dark green ground the other wire at sensor
I used the cam sensor from a v10 I think most of them are the same
made a bracket
installed it here is where i messed up I set it at about .040 maybe a little more
I was told it needed to be .018 so I set it to .018 and I have a tach
here is my photo bucket with my bracket and much more stuff
http://s1125.photobucket.com/albums/l582/deck60/ford%20cummins/
---AutoMerged DoublePost---
it works !!!!!! timdale was 100% right on about the .018
tie 85 and 48 togethere before the pcm hook one wire at sensor and the other wire will go to #85 dark green ground the other wire at sensor
I used the cam sensor from a v10 I think most of them are the same
made a bracket
installed it here is where i messed up I set it at about .040 maybe a little more
I was told it needed to be .018 so I set it to .018 and I have a tach
here is my photo bucket with my bracket and much more stuff
http://s1125.photobucket.com/albums/l582/deck60/ford%20cummins/
Last edited by deck60; 04-20-2012 at 12:22 PM. Reason: Automerged Doublepost
#6
Deck60, how accurate do you think your tach is? I think mine is about 500rpm,s too high, on the gauge. At 65 in 5th the tach reads 2600. According to a couple rpm calculators I've used it should be 1850-1900, with the .77 o/d gear, 3.73 rears and 305/65-18 tires. Maybe I'll mess with the sensor clearance. At idle it's about 300 too high, so the higher it revs the more it's off
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