DLC Code 41

[fixkick]

hello there

got a 1992 tracker, 8 valve tbi, 2 door, 5 speed, 4WD. 

Just ran a DLC test and got code 41.
 On the kick page, it says:

On the G16 engines, this means the Tachometer wire , brown is dead. (or weak) Suppressor missing, or Tachometer shorted, or bad ignitor or bad spark coil.

What could be the symptoms of this? The car runs but its very rich and idles weird. What is the best way to figure out why this code is being spit out?

did you clear all DTC errors first buy removing the DOME fuse for 1min and put it bacK(the erases all errors in memory in the ECU)

41 means, the spark coil signal is week, as measured at the brown tachometer wire.
mostly this will show up as gross engine misfire, or worse it will cut all fuel injection
code 41 can also cause the engine to drop to limphome mode.
but misfiring each time it dead, wastes one cylinder for fuel,  and that is rick running.
misfire will cause idle to be wierd and limphome mode kills idle controls.
bad spark coil tops my list .

bad tacho , bad cruise control box.,
the ECU fires the COIL using the  firewall mounted Ingitor transistor, this huge signal there, at coil minus , is sent back to the cab, via supressor and bacome brown tachometer single to tacho meter and cruise control box.
pin A1 is the brown spark monitoring wire, 1 misfire in 6 sets DTC 41.

i made this page long ago,to help (this is simplified, just to show how spark works and not dead sparked or dead CMP(CAS) (DTC 42) can cause fuel injection to end.
41 means A1 has, odd looking signals, (weak or misfiring) most times is bad spark coil. the coil is on the top  engine bay fire wall. CAS = cam angle sensor, CMP is correct name.



code 41 is for primary side of coil, misfiring, 1 out of 6 times, it can do that.