Post by acy76 on Jul 19, 2006 10:13:15 GMT 11
I am currently converting a 1988 Trooper to diesel using the 4JB1-TC engine and am wondering whether anyone knows how the tachometer is wired.
There is a boot on the engine side of the injector pump with 2 wires coming out of it that I believe is the tach sender. Should one of these leads produce a voltage which varies with RPM? I am attempting to connect the sender to a tach from a US-model diesel Trooper (using the 2.2l C223T engine's tach gauge) but have not gotten any reading on the gauge.
I have not yet eliminated the possibility of a wiring fault, but wanted to know if one or both sender lines are signal lines and what sort of signal I should be seeing. Is it similar enough to the signal from the coil on a gas engine that a gas tach would work?
Thanks for any insight.
There is a boot on the engine side of the injector pump with 2 wires coming out of it that I believe is the tach sender. Should one of these leads produce a voltage which varies with RPM? I am attempting to connect the sender to a tach from a US-model diesel Trooper (using the 2.2l C223T engine's tach gauge) but have not gotten any reading on the gauge.
I have not yet eliminated the possibility of a wiring fault, but wanted to know if one or both sender lines are signal lines and what sort of signal I should be seeing. Is it similar enough to the signal from the coil on a gas engine that a gas tach would work?
Thanks for any insight.
