i believe im going to play around with my setup a bit more today..
see if i cant get a tach reading from my cluster..
i know the cluster is good..
i used the crank pickup on my 1z mtdi ,its in a gasser 2.5 t4 transporter ,but now a mtdi wired up the sencer power from pump sol, and run the wire from no 2 pin to the gas taco , and have my aftermarket diesel taco on to the w T , to compare gass taco on idle, reads 900rpm and the W one reads 650rpm m van dose ldle low. and gaser at 3000rpm W at 2000rpm , tryed a small capacitor in line from no 2 pin then a bit biger one ,just the same , need some way to get the frequency down . i am not in to electronics things bobers, but some one may be able to shed some light on this .
you positive your diesel tach is accurate?
i would lean more towards the gasser tach being accurate...
if its raining too hard, the diesel tach is in-accurate, and thats not cool..
my old audi 5000TD, the tach would quit working whenever you hit a puddle in the road..
then the belt would dry, and the tach would come back to life..
The crank sensor on the AHU/1Z will give four pulses per rev. The gasser 2.5 (5-cyl) tach will be looking for 2.5 ignition pulses per rev and thus the discrepancy. A gas 4 cyl tach is looking for 2 pulses per rev. I've been planning on using a flip-flop to cut the crank sensor output in half in order to drive a typical 4-cyl gasser tach.
The crank sensor on the AHU/1Z will give four pulses per rev. The gasser 2.5 (5-cyl) tach will be looking for 2.5 ignition pulses per rev and thus the discrepancy. A gas 4 cyl tach is looking for 2 pulses per rev. I've been planning on using a flip-flop to cut the crank sensor output in half in order to drive a typical 4-cyl gasser tach.
whats this flip flop you are talking about?
After reading some of that I short circuited. lol.. What would one use to implement a flip flop circuit to do what your describing to cut the 4 pulse signal into 2?
I've been planning on using a flip-flop to cut the crank sensor output in half in order to drive a typical 4-cyl gasser tach.
Well it might be this type of flip flop.
I'm not particularly electronics savvy, but I think that would work wired correctly.
anyone have any idea about modifying the stock mk2 tach to accept a signal from a mag pickup?