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
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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?
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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?
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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.
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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.
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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
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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. |
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. |
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. |
If tape looks permanent, leave it on.
If it looks like shipping tape used for protection, take it off. |
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. |
Originally Posted by Marc Pierce
(Post 705648)
I put starter fluid in it and it attempted to run for a split second
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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.
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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. |
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. |
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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