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-   -   I'm at a loss 92Z28 (https://camaroforums.com/forum/82-92-v8-tech-13/im-loss-92z28-79289/)

Marc Pierce 10-06-2015 10:49 AM

I'm at a loss 92Z28
 
I bought a 92z28 5.7 very clean but won't start it was turning over now it won't do that and the battery is at full charge I've cleaned each injector replaced fuel filter spark plugs distributor cap rotor button ignition module and coil. I'm getting fuel to the rail . The service engine soon light stays on and I'm getting 12 on the code and inflatable airbag light blinks 7 times and stays on and security light comes on when key is turned on but then goes out. I'm stumped

Camaro 69 10-06-2015 10:53 AM

Service engine light and code 12 (no ignition pulse) is normal, since the engine isn't running. When you say it's not turning over, that means nothing happens with the turn of the key, or maybe just a click at the starter. Is that what's happening?

Marc Pierce 10-06-2015 11:39 AM


Originally Posted by Camaro 69 (Post 705633)
Service engine light and code 12 (no ignition pulse) is normal, since the engine isn't running. When you say it's not turning over, that means nothing happens with the turn of the key, or maybe just a click at the starter. Is that what's happening?

It was turning over . Starter engaged motor rotates but does it real fast I sprayed some starter fluid in it and it made an attempt and firing off but that's it then the starter stopped engaging and all I get is a click

Camaro 69 10-06-2015 11:53 AM

Check your fuel pressure, poor fuel supply may have been the first issue. But the starter is something different, it may have burned out, or it's a bad connection. I'd first start by removing and cleaning the connections at the solenoid and battery.

Marc Pierce 10-06-2015 02:45 PM


Originally Posted by Camaro 69 (Post 705637)
Check your fuel pressure, poor fuel supply may have been the first issue. But the starter is something different, it may have burned out, or it's a bad connection. I'd first start by removing and cleaning the connections at the solenoid and battery.

Ok did that and it is back to normal. Turning over and not running. Its getting the right fuel pressure. I put starter fluid in it and it attempted to run for a split second

Camaro 69 10-06-2015 03:34 PM

Then you want to check to see if your injectors are getting a pulse signal from the computer: How to check fuel injector pulse using a noid light | Engine Misfire

Everett#2390 10-08-2015 05:33 AM

Injector fuses, one per side, blown?
Or maybe needing reseated in socket?
Or faulty fuel injector power relay?

Injectors get battery power to one wire, black, I believe, and the other wire comes from PCM/ECM and CM places a low on this wire, if
ign pulse is received from distributor.

You may want to externally charge battery while it sets.

Marc Pierce 10-08-2015 04:14 PM

Got it
 

Originally Posted by Everett#2390 (Post 705689)
Injector fuses, one per side, blown?
Or maybe needing reseated in socket?
Or faulty fuel injector power relay?

Injectors get battery power to one wire, black, I believe, and the other wire comes from PCM/ECM and CM places a low on this wire, if
ign pulse is received from distributor.

You may want to externally charge battery while it sets.

Pickup coil was the culprit I'm about to put in new one and I'll let you know how it goes thanks again you have no idea how much I appreciate the help

Marc Pierce 10-09-2015 02:05 AM

Quick question
 

Originally Posted by Everett#2390 (Post 705689)
Injector fuses, one per side, blown?
Or maybe needing reseated in socket?
Or faulty fuel injector power relay?

Injectors get battery power to one wire, black, I believe, and the other wire comes from PCM/ECM and CM places a low on this wire, if
ign pulse is received from distributor.

You may want to externally charge battery while it sets.

On the new pickup coil it came with tape wrapped around the coil windings do I take that off

Everett#2390 10-09-2015 05:56 AM

If tape looks permanent, leave it on.
If it looks like shipping tape used for protection, take it off.

Marc Pierce 10-09-2015 01:54 PM

Idk
 

Originally Posted by Everett#2390 (Post 705734)
If tape looks permanent, leave it on.
If it looks like shipping tape used for protection, take it off.

idk but still no fire . New coil, distributor, rotor, pickup coil, ignition module ,plugs and wires and still no fire

Camaro 69 10-09-2015 02:24 PM


Originally Posted by Marc Pierce (Post 705648)
I put starter fluid in it and it attempted to run for a split second

I don't know why you're chasing the ignition, when it's clearly a fuel (or lack thereof) issue. Did you check to make sure your injectors are firing, as I suggested earlier? You posted no follow up to that test.

Marc Pierce 10-09-2015 03:56 PM


Originally Posted by Camaro 69 (Post 705754)
I don't know why you're chasing the ignition, when it's clearly a fuel (or lack thereof) issue. Did you check to make sure your injectors are firing, as I suggested earlier? You posted no follow up to that test.

How is it fuel issue if the coil tested bad the distributor cap was bad the pickup coil tested bad and I'm still not getting fire . I have the correct fuel pressure at the rail and the injectors tested ok? I don't get it

Camaro 69 10-09-2015 04:19 PM

Fuel + spark = fire. If you're getting no spark, you never said so. But you must be getting something, since the engine fires up momentarily with starting fluid. You would get nothing if you had no spark.
I know you cleaned the injectors, but did you test them all to see that they are getting an electrical signal while cranking the engine over? They can be as clean as a whistle, but that does no good if they're not being told to open and close. I didn't see the follow up to that test, if you did it.

Marc Pierce 10-10-2015 09:13 PM


Originally Posted by Camaro 69 (Post 705769)
Fuel + spark = fire. If you're getting no spark, you never said so. But you must be getting something, since the engine fires up momentarily with starting fluid. You would get nothing if you had no spark.
I know you cleaned the injectors, but did you test them all to see that they are getting an electrical signal while cranking the engine over? They can be as clean as a whistle, but that does no good if they're not being told to open and close. I didn't see the follow up to that test, if you did it.

Ok no power to the injectors but correct fuel pressure to the rail. And no spark I've replaced the ecm aswell

Everett#2390 10-11-2015 06:29 AM

No power to injectors, does this mean:
no battery power through INJ fuse(s) to one wire on injector connector?
Other wire on injector connector has no control power from ECM -voltage goes high-low-high-low, etc, when cranking?


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