Honda Repair: 92 civic cranks but wont start, engine cranks, wire colors


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Followup To
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Followup To
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I have a 92 civic ex that just quit. It will crank but has no spark and the fuel pump does not come on. I swaped out the main relay but it is still the same. I checked for voltage at the ignition coil and they are good and I checked for resistance and that looks good. Could it be the ECM? What is considered the MIL? Thanks, John
Answer -
I would place my money on the coil and ignitor.  Very common problem especially if you have any miles on the car or the wrong/worn spark plugs.  Remove the coil and check behind the metal plate that is on the back of the coil.  If it shows hotspots you will need to replace the coil.  I would also replace the ignitor unit as well.  If you don't that will fail next.  I always replace them as a set to prevent any problems.  

Engine Won't Start? Check
Coil & ICM
On models with single-coil ignition systems, if the
engine cranks but there's no spark at the plugs, check the
ignition coil and the ICM (ignition control module
[igniter]) by using this procedure:
NOTE: Wire colors for wires referenced here can vary
between models, so use the appropriate ETM to ID them.
1. Turn the ignition switch ON (II), and watch the MIL
(malfunction indicator lamp).
If the MIL doesn't come on, or it comes on and
stays on, refer to MIL Basics on this page.
If the MIL comes on for two seconds and then goes
off, go to step 2.
2. Check for battery voltage at the positive wire going
to the coil, and at the positive wire going to the ICM.
If you have battery voltage, go to step 3.
If you don't have battery voltage, check for an
open between the ignition switch, the ICM, and the
coil.
3. Connect a voltmeter between the coil negative terminal
and ground, and record the cranking voltage two ways:
first with the wire between the coil and ICM connected,
then with it disconnected.
If you get about 8 V with the wire connected and
10 V with it disconnected, install a new coil, and
retest.
If you get about 10 V with the wire connected and
disconnected, install a new ICM, and retest.

Craig,
Would this also keep the MIL (check enginge light?) on all the time? The car has 124,000. Would these items prevent the fuel pump from coming on? The fuel pump does not come on at all unless I jumper the main relay. One more thing is that is did not just quit. First it quit on her a qouple of times but ended up starting again. When I tested using these steps the other day I I got 11V with it connected and dissconected. Thanks, John
Answer -
No, none of these things would cause the check engine light to come on.  Has there been any work done on this car recently?  Check the engine ground wire that is bolted to the thermostat housing and make sure its tight.  Other than that, there isn't anything common that I can recall.

Craig,
The only work done to the car that I know of was back in December. I changed the thermistat. Are there things to check if the MIL stays on and wont start other than checkinig the ground wire?  

Answer
If the check engine light is on, is there any codes?  Check by using a paper clip in the two pin blue connector located behind the passengers side kick panel.  Jump the connector and turn the key on and count the flashes.  Let me know what the code is.  There are very few codes that will cause the car to not start.