there will be a spot on back of distributor cap it will say tach run wire from there to gauge. You probably need to run a switched 12v lead as well to illuminate the tach at night. The tach slot on the distributor will take care of 'timing' the pulse to the tach. Often times the tach will have a switch setting for 4-6-8 cylinder. Read the manufacturer instructions carefully.
Check the diagnostic codes on your vehicle, if the crank sensor is bad the car's computer should know it. Can't really give more specific information without the make/model of the vehicle in question. if vehicle is equipted w/ a tach. watch tach while cranking, if tach doesnt move while cranking USUALLY means bad crank sensor
you can install any kind of tach you want to in your car..if you do not have a stock tach then look in your manual for the rmp sensor wire..should be blue or green coming off the distributor...just splice into it...if you have a stock tach you can just splice into the stock tach wires by taking off the dash
there is a white almost tanish looking solid color wire on the group of wires that plug into the guage cluster use a quick connect to connect the signal wire from the tach to the white wire on the guage cluster
The Tach's connection could have become loose over time. Also, if the tach is original to the vehicle, it may just be damaged from age and need replaced.
The VSS (Vehicle Speed Sensor) is probably bad. Also check the fuses.
this is a good question. my 98 escort lx didnt have a stock tach so i bought aftermarket and tried to splice the wire off disturbtor off one of those reading one and it gave me half reading such as for 3,000, it show 1,500 instead, even on the setting of 4 cylinder. if you can get your hand on a stock tach from used escort, you can install that and keep same odometer, it is fairly simple thing to do, and even all escort comes with pre wire for the stock tach, i replace my dash stuff and added stock tach, and it works great, very accurate reading. tried to use same connection on tach from the dash pre wire, didnt give reading, guess it needs a special signal to mak eit work, if need more help with gettin stock tach to make it work, email me at evanescenceobsessor (at) tmail (dot) com eventually im gonna do more project on my car and find the wire. one friend told me it is a pink wire in middle console, that gives right signal on tach but i will need to check on that.
Yes you can no problem.
Yes, i found the answer. Truck had an aftermarket tachometer installed. 2nd truck this tach has been on. After 320,000 mi. on this tach, something in the wiring or internals failed. Unplugged the tach, truck fired right up. Check those aftermarket accessories you installed, before finding fault with the factory stock vehicle.
You need a wiring diagram for that answer. each vehicle is different.
Does the vehicle already have a tach?no
This entirely depends on the vehicle and the type of tach your referring to such as a add on tach or an OEM in dash tach. To explain how to install and OEM tach would take far to long. I would suggest a add on tach that mounts basically where ever you want to mount it. Most of these tachs explain the installation instructions. I personally recommend a tach by Autometer you can view their products on the web at the link below. , EzForJesus http://www.autometer.com/
I have a vague recollection that the neutral start switch could be the problem.See "Related Questions" below for more