92 century Ignition control

[scotts96gt]

I posted a few weeks ago that my car wouldnt start but would instead just sit and crank and crank and crank without even the slightest sputter.. Anyways i replaced the coils and im still having the same problem. Ive pulled the wires off the coil pack and im getting no spark... So my question is is there anyway to check the pins on the ignition control harness to make sure im getting proper voltage and what are the pins supposed to be showing on my multimeter. I dont feel like keeping up this routine of replacing things that are still good.

[bob1371]

Have you thought about the crankshaft position switch?

You didn't mention engine size but Mitchell shows either a 2.5 4cyl or a 3.3 v6 for the 92 century. These may help in troubleshooting.

2.5L engine

http://rapidshare.com/files/207692245/century_2.5.pdf.html

3.3L engine

http://rapidshare.com/files/207692478/century_3.3.pdf.html

if your not familiar with rapidshare just paste link into browser, select free user and download will be there.

[Scrapper]

try this take hose off spray starting fuid in the throttle body just to make sure your not getting spark? and if not it wont fire take plugs out to see if there wet with gas. did you put the whole coil pack on or is it the one that where you can replace the one thats bad should be 3 coils or all should be 1 pack? but if plugs arent wet your not getting gas either.

[ctwright]

You should have a 14 pin connector going into the module beneath the coils.

One side should have 4 wires or possibly more and the other side has 7 wires spaced closer together.

On the side with the 4 wires or more(should have 2 wires that are pink/black, with your key in the on position, you should have 12 volts + on the wire 1st and 3rd spot from the edge, both wires should be pink/black. If no voltage their check your ignition fuse and your fuel pump/inj fuse.

If you do have voltage their the problem is either in the module itself beneath the coils, or the crank or cam sensor, not sure which one though.

I'm not sure what the signal voltage is or polarity that is supposed to come from the cam or crank sensor to the ignition module.


The cam sensor input is the 5th spot from the edge on the side you worked on earlier, and the crank sensor input is the 6th spot over from the other edge opposite the side you checked earlier.

I'm not sure if this will work but I would check like this, have one lead of a voltage meter on a ground, the other on one of those signal inputs, get someone to keep bumping the motor over and check for fluctuations in the meter reading, then try it with the lead on the positive battery cable instead of a ground, and check for the same if you didn't see anything the first time. If you get some kind of reading that fluctuates when the engine is being turned over the sensor I would think is good, you can then check the other sensor input the same way. If you get something with both of them I would try changing your ignition module. Hope that helps.

[ctwright]

I found a diagram with the pinouts incase I didn't explain that very well look at the diagram https://www.autozone.com/images/cds/...3d800e4e08.gif