Joined
·
134 Posts
First some background: I've had my cat for almost 5 years now, and have gone through and repaired/improved a lot of things. I am very proud of how the car handles, runs, and looks. There is however, one failure that stares me in the face every time i drive the car. My factory XR7 Tachometer. It has never worked and i was never sure why. The needle has never so much as twitched and remains in the off position. But i will simply accept this no more!
I have taken my dash cluster apart and resolve not to put it all back together until i can do so with a working tach. I am stumped though. I have the tach out of the car entirely, and for the hell of it, get the key a turn and the car started! I thought stock wiring would make this impossible. Does this mean my tach wiring has been bypassed entirely at some point? I can trace one of the wires from the coil through the firewall, seeming to pass through behind the ignition key wiring, and to the tach. In tracing it it seems that a lot of other things might be tapping into this wire. The other disappears somewhere toward the firewall (ground?).
I am wondering if anyone has any insight as to what this might mean about my tach. Is my problem in the tach, the wiring, or both? If i buy a nice 8K 3-wire tach i could just start fresh, but they are more spendy than a used one, and much more spendy than keeping mine. Can someone help me finally solve my tach issue?
Any response will be appreciated, and if anything i said wasn't clear, please let me know and i will do my best to clarify. My goal here is to finally get my tach working.
I have taken my dash cluster apart and resolve not to put it all back together until i can do so with a working tach. I am stumped though. I have the tach out of the car entirely, and for the hell of it, get the key a turn and the car started! I thought stock wiring would make this impossible. Does this mean my tach wiring has been bypassed entirely at some point? I can trace one of the wires from the coil through the firewall, seeming to pass through behind the ignition key wiring, and to the tach. In tracing it it seems that a lot of other things might be tapping into this wire. The other disappears somewhere toward the firewall (ground?).
I am wondering if anyone has any insight as to what this might mean about my tach. Is my problem in the tach, the wiring, or both? If i buy a nice 8K 3-wire tach i could just start fresh, but they are more spendy than a used one, and much more spendy than keeping mine. Can someone help me finally solve my tach issue?
Any response will be appreciated, and if anything i said wasn't clear, please let me know and i will do my best to clarify. My goal here is to finally get my tach working.