So i recently did a cluster swap on my 95 cx hatch and i used it and it worked well, but all of a sudden the tach wasnt reading correctly and would redline at 4000 instead of 6800, it still reads, but just doesnt seem to be correct.

So now i tried revving it a bit and i saw the battery light flash when it got a little higher in rpms, could this be my alternator going on me, and just not giving enough current to the cluster? because my speedo still works.

 

What happens when you put the old cluster back in the car?

 

Sometimes an alternator that is not charging correctly will make your gauges go crazy.

 

well the reason i changed the cluster was so that i have a tachometer, kinda sucks without one, so everything works fine just not the tack, i already checked the distributor wires and everything that leads there. it all seems to be in working order, except for the tachometer

 

Then have the alternator checked.

 

ya im having that checked on monday, but luckily my boss, abe, is a huge eg enthusiast so hes probly got one he said, so whenever i need parts i talk to him, so hopefully it is the alternator, and i can be done with troubleshooting

 

Mine says i'm idling at less than 400rpms when it's warm... It probably really is, but oh well lol.

 

ya but mine would redline at 6800 like the d15 should, but not it doesnt go up as fast and redlines just before 4 grand, so somethings wrong