V8 Ranger tach issue

[Rangstang]

I've just about wrapped up this swap, but the tach appears to be reading about 2x what the true RPMs are. The truck is a 98 Ranger with a 96 motor and PCM and a 97 instrument cluster. The engine idles at around 1400RPMs on the tach and I did the rewire of pin 8 (Blk/Ylw) from the small white connector to pin 16 of the large white connector. I do have the EVTMs so from what I can tell I did it correctly and I see the reasoning behind it (bypassing the 4.7K ohm limit resistor).

I'm having the same issue with my last Ranger V8 swap too which is a 99 Ranger with a 98 engine, PCM and cluster.

The funny part is that 1.5 years ago, I did a swap on a 2000 Ranger with a 99 motor, PCM, and cluster, and it worked like a charm.

Anyone have any ideas?

 

[RJAAAAAA]

I've just about wrapped up this swap, but the tach appears to be reading about 2x what the true RPMs are. The truck is a 98 Ranger with a 96 motor and PCM and a 97 instrument cluster. The engine idles at around 1400RPMs on the tach and I did the rewire of pin 8 (Blk/Ylw) from the small white connector to pin 16 of the large white connector. I do have the EVTMs so from what I can tell I did it correctly and I see the reasoning behind it (bypassing the 4.7K ohm limit resistor).

I'm having the same issue with my last Ranger V8 swap too which is a 99 Ranger with a 98 engine, PCM and cluster.

The funny part is that 1.5 years ago, I did a swap on a 2000 Ranger with a 99 motor, PCM, and cluster, and it worked like a charm.

Anyone have any ideas?

I did the swap with a 2004 4.6 into a 2001 Ranger, I too did the wire swap in the dash but now I don't have any response on the tach. ??? Hope some one has an answer.