tach signal, speedo problem
Posted: November 1st, 2013, 7:05 pm
ok to start off with my jeep is running on ms. i hooked up the tach signal wire to the negative on the coil and i am getting a tach reading but it is way off. tuner studios shows idle at 750-800 and it feels like that, but the tach says 1300 rpm. my rev limiter is set at 5300 and when i feel it hit the tach show 7000+ rpm. i know the pcm supplied the tach signal and i am wondering if i just nee to buy an aftermarket tach or what?
problem 2. the speedometer. i have 8 volts running to the sensor and the sensor grounded where the cluster is grounded (on block) with it hooked up i still get no mph but the weird thing is when i free rev or drive it the speedo jumps randomly with the rpm, but only when the speedo is hooked up. i already cleaned the crap off of the solder joints on the back of the cluster and at the connector, didnt change much. any ideas?
problem 2. the speedometer. i have 8 volts running to the sensor and the sensor grounded where the cluster is grounded (on block) with it hooked up i still get no mph but the weird thing is when i free rev or drive it the speedo jumps randomly with the rpm, but only when the speedo is hooked up. i already cleaned the crap off of the solder joints on the back of the cluster and at the connector, didnt change much. any ideas?