Question about 1995 Nissan Maxima

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I have95 nissan Maxima.the fuel injector is staying hot when the car is off&no keys in the ignition.I have replaced the wiring harness&the computer&it is still doing the same thing.What could be wrong

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When you say hot if you mean voltage is present, that is normal

Posted on May 17, 2017

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Hi I have a 2004 mustang gt and we change the fuel pump and fuel filter and then we check the injectors with a tester and bank 1234 on the passenger side is out and 5678 on the left side is on and ain't no...


Sounds like the power splice to bank one is lost. By injection tester, do you mean a noid light?

Do you understand how the fuel injection circuit works? When the ignition key is in the on position, all of the injectors will have constant battery voltage applied to them. Bank 2 (#'s 5,6,7,8) is good- they are all pulsing. The same power wire is spliced to all 8 injectors. The other wire at each injector is the ground wire, and each ground wire goes separately into the engine computer to be internally grounded for a split second. That is the pulse of the injector, and is when it sprays fuel into the cylinder.

So think about it. Your 5,6,7,8 is working right, but 1,2,3,4 are not pulsing. Not likely 1234, all 4 separate ground wires, just went bad like that. More likely that 1234 not getting voltage to them through that common hot wire. You can check it real fast: check for voltage on any injector connector on bank 1, with the key in ON. The inj. connector only has two wires, a power and a ground wire. One of them should be hot in on. If no power on bank 1 injectors, trace it back to the engine harness. Somewhere, the power wire will splice off between bank 1 and bank 2.

Nov 04, 2014 | Cars & Trucks

3 Answers

2000 Nissan mis firing,, code reader shows codes: 0430; 0305; and 1320. Assuming its bank 2 cat convertor. Is this where i should start???


Your going to be spending plenty

You have to diagnose & correct your cylinder misfires
& make sure you have proper fuel control -- BEFORE--
you replace the Exhaust Converters & Oxygen Sensors,
ruined from the misfires

Properly diagnosed & everything done correctly,your looking
at about $1,000 & that is normal & those thing happen, on ALL
vehicle,even if you do all your own work

I would suggest you have a pro work on it,the best you can find
ASE Master Mechanic with L1 Certification

Oct 02, 2014 | 2000 Nissan Maxima

1 Answer

1987 nissian maxima The car is getting way to much fuel replaced the egr,fuel pressure reg,spark plugs and wire, check fuel pressure,checked for vac leak


engine miss caused by many things,weak ignition from bad ignition coil, ignition timing off if you have high mileage engine low compression from worn burned valves.could have something minor like stopped up air filter, clogged dirty fuel injectors, through the years i have seen many things cause engine to miss.

Nov 26, 2012 | 1987 Nissan Maxima

1 Answer

1992 Nissan Maxima the injectors are hot when the key is turned off


HAS ANYBODY WORK ON THE CARS CIRCUIT AT ALL? LOOKS LIKE YOU HAVE A PROBLEM WITH THE CIRCUIT EITHER THE CONTINUITY IS WHILST OF IGNITION AND ALSO MIGHT HAVE A PROBLEM WITH THE PCM TOO. CALL AN EXPERT FOR HELP. DO NOT DO ANYTHING ON YOUR OWN.

Aug 31, 2012 | 1992 Nissan Maxima

1 Answer

Is there an injector relay on a 1994 nissan maxima computer


Computers do not use relays. Computers use large transistors (A.K.A. "drivers") to control things like relays, solenoids and injectors.

That being said, your Nissan is equipped with "sequential multiport fuel injection". There are 6 injectors, all of which are supplied power from a 15 Amp fuse in the underhood fuse and fusible link center. The white wires at each of the injectors is hot (Battery Positive voltage) at all times, even with the ignition switch OFF. The drivers in the computer (or ECM)toggle the other wires on each injector (each injector having its own wire color) to ground (Battery Negative) in order to complete the injector circuit and cause the individual injectors to fire at the proper time. This is what is known as "injector pulse".


To sum-up, there are no relays involved in the actual injector circuits on your Maxima. The only relay that is remotely related to the injectors is the ECM Power Relay which supplies power to the ECM. Since the ECM will not function if this relay is defective, neither will the injectors work if this relay is faulty.

I hope this helps you to understand whatever it is you are trying to figure out.

Mar 17, 2012 | 1994 Nissan Maxima

1 Answer

My maxima 1995 is having a hard starting and when it starts, the engine will switch off by itself


Check your ignition system and fuel system. Spark plugs, wires and coils as well as your fuel pump and fuel filter and injectors.

Jun 09, 2010 | 1995 Nissan Maxima

1 Answer

1982 Nissan 280ZX injectors will not open.


you need to check with a noid light and you must have a pulse or yuo have a computer problem they had a lot of difficulty with their injector plus too

Sep 11, 2009 | 1983 Nissan 280ZX

1 Answer

Fuel injectors on 1982 Nissan 280zx will not open. I


All you have to is check if the fuse or relay are working. If they are, your injectors should be replaced. In the future, use a fuel injector/ carburetor cleaner after every fill up.

Sep 10, 2009 | 1983 Nissan 280ZX

1 Answer

1998 Maxima misfire code cylinder #1


your not getting any fuel into the cylinder

Mar 22, 2009 | 1998 Nissan Maxima

2 Answers

Started idoling rough and driving rough like spark plug off


check fuel filter then check the ignition system

Aug 02, 2008 | 1995 Nissan Maxima

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