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96 maxima no pulse from injectors

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Old Mar 1, 2014 | 02:29 PM
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96 maxima no pulse from injectors

I'm getting spark. Got power at injectors but no pulse. Pump primes. All three can crank sensors new. I'm lost any input? Security light stay off when key in.
Old Mar 1, 2014 | 02:34 PM
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The body control module unplugged?
Lil black box under radio can cause that.
Old Mar 1, 2014 | 02:44 PM
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Its plugged in I wiggled it around same issue. I check every fuse swapped relays around. Checked grounds. I'm lost..
Old Mar 1, 2014 | 10:09 PM
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The 96 doesn't have NATS so the security light doesn't really mean anything. The alarm system will disable the starter. I never heard of the pre-Nats cars disabling the injectors.

Try disconnecting the battery and resetting the ECU, along with removing the connector from the ECU and re-installing it.

You could try checking wire continuity between the ECU and injectors.
Old Mar 1, 2014 | 10:12 PM
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Camshaft position sensor for no injector pulse issues, crankshaft position sensor for no spark issues.
Old Mar 1, 2014 | 10:50 PM
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also theres grey little box right next to maf sensor that will say unisia jecs in big letters and that is primarily for the fuel injectors. If you unplug it the car will not start and will stall if you unplug it while it runs. Thats like a control module for the injectors.
Old Mar 2, 2014 | 07:12 AM
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Put a can sensor out a running car no go..battery was off too. I'll try disconnecting ecu and put back.


Thanks guys any more suggestions would helpa bunch.
Old Mar 2, 2014 | 05:56 PM
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Originally Posted by maxgtr2000
Camshaft position sensor for no injector pulse issues, crankshaft position sensor for no spark issues.
Old Mar 3, 2014 | 10:36 AM
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Watching app it turns over n reads 250rpm fuel pump works. Power to injectors and coils but no spark or fuel now....ecu? Can I put a 95 ecu in it or does it need to be programmed?
Old Mar 3, 2014 | 10:37 AM
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Even added a 0gauge ground by crank sensor
Old Mar 3, 2014 | 01:37 PM
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I can disconnect sensors n still doesn't throw codes. So I bought a new ecu out a 96 i30 and now my scanner won't even connect to computer or recognise it....whats going on?
Old Mar 3, 2014 | 03:15 PM
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Got it to read. Ecu still didn't fix car. The connector to ecu has been sliced into so about to burn car.
Old Feb 15, 2019 | 06:51 PM
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maxima 95

My 1995 Nissan Maxima has been shutting down on me at random moments while driving and has left me stranded a number of times. After consulting with a mechanic friend, he seems to think that it’s likely caused by the loss of the current to the fuel injector. Can someone verify or confirm if you have had a similar experience? Thank you!



Old Feb 16, 2019 | 04:18 PM
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Originally Posted by emilianonp
My 1995 Nissan Maxima has been shutting down on me at random moments while driving and has left me stranded a number of times. After consulting with a mechanic friend, he seems to think that it’s likely caused by the loss of the current to the fuel injector. Can someone verify or confirm if you have had a similar experience? Thank you!
hey! Try not to grab old threads, rather start your own!

I experienced an identical problem and it was the crankshaft position sensor starting to fail. The ignition system has to know where the crankshaft is during rotation in order to fire the coils. That was a lot of troubleshooting and I ended up taking in to a shop in the end.

hope this helps!
Old Feb 16, 2019 | 04:47 PM
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Originally Posted by Shrout1


hey! Try not to grab old threads, rather start your own!

I experienced an identical problem and it was the crankshaft position sensor starting to fail. The ignition system has to know where the crankshaft is during rotation in order to fire the coils. That was a lot of troubleshooting and I ended up taking in to a shop in the end.

hope this helps!
That makes sense.

I understand that dirt and crud on a good sensor could cause the problem as well. Which might mean that one could try to clean the existing sensor, then reinstall.
Old Feb 17, 2019 | 06:51 AM
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Originally Posted by emilianonp
My 1995 Nissan Maxima has been shutting down on me at random moments while driving and has left me stranded a number of times. After consulting with a mechanic friend, he seems to think that it’s likely caused by the loss of the current to the fuel injector. Can someone verify or confirm if you have had a similar experience? Thank you!
there's about 15 reasons your max would be shutting down on you while driving.
I don't know what your mechanic checked out and what he didn't to reach the injector pulsing conclusion..

biggest problems I've found with these cars especially 95s which is the very first year model due to age..

Intake manifold leaks due to deformed gaskets (especially between upper/lower manifold), faulty MAF sensor, bad Grounds for sensors, dying o2 sensors, ignition coils/spark plugs/bad coil electrical harness, crankshaft sensor subharness, or the actual ECU not sending the right signals.

i don't think anyone on here is going to give you the exact problem until you start ruling out possibilities yourself/your mechanic/or you find someone who actually knows these engines really well instead of a 'general import/domestic - we can do everything - mechanic''
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