Pulsar code 21, Ignition signal - what is it?

Tiny
ARTWG
  • MEMBER
  • 1921 NISSAN 240SX
I have a 1988 pulsar nx with the 1.6 engine with 200,000km on it. It just started to run rough and stall when idling. I checked the codes and got a 21- ignition signal. I also went to mode V (real time) on the dual led ECM and got Ignition Signal Lost.
The tach has never worked since we got the vehicle 4 months ago (sometimes jumps for a second) and I never checked the codes before to see if I always had this. The chilton manual does not say what signal is the ignition signal or what pin on the eccs control unit it would go to. Any ideas?
Art
Tuesday, February 27th, 2007 AT 2:13 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Try checking the distributor assy-crank angle sensor. The computer is not getting the ignition signal from the distributor.

Also check the Throttle position sensor/idle air control valve/Mass Air Flow sensor.
Was this
answer
helpful?
Yes
No
-1
Tuesday, February 27th, 2007 AT 9:38 PM
Tiny
ARTWG
  • MEMBER
  • 4 POSTS
Thanks rasmataz
The error codes give a different number for crank angle assembly error but I guess the ignition signal error has to come from the distributor as well. You cannot change parts on this distributor so you have to buy a whole one and they are up to 300$. I will try the wrecking yards first and report if that was it.
I cleaned and blew out the distributor pulse wheel but it did not help.
Art
Was this
answer
helpful?
Yes
No
Wednesday, February 28th, 2007 AT 11:11 PM
Tiny
ARTWG
  • MEMBER
  • 4 POSTS
I replaced the distributor and that made no difference. So then I replaced the ignition module and it still ran poorly but the non-functioning tach is acting different as is the sometimes functioning speedo. Is the speedo electronic as well as mechanical? Do I change the computer next? The chiltons manual does not give full electrical drawings but I expect the computer (the ecc) controls the tach?
Art
Was this
answer
helpful?
Yes
No
Saturday, March 3rd, 2007 AT 6:21 PM

Please login or register to post a reply.

Sponsored links