I've made sure my can network was at 5 v 60ohms of resistance 120 with ecu disconnected, I've checked most of my grounds and cleaned them up with sand paper or wire wheel I've tried the old sensors in place of the new ones engine rpm signal while cranking even while not on flywheel shows 3-400 every 5ish seconds
Altima coupe 3.5 no spark
Okay here's where I'm at I had these AutoZone coils to replace my oems they lasted a week and one of them burned up quite literally.
Okay so I ordered new ngk ones and returned the AutoZone ones I got about 10 minutes down the road and it shut off. Brought it home and had a p0300 (crank sensor that might be the wrong code in not sure.) So I got a new one and nothing , replaced can sensors too nothing all oem but I noticed when I crank there's no rmp signal on my tool so I swapped with the old one and it's erratic so tried it unplugged still no spark I've tested power to coils (check)
Injector pulse (check) pulse from ucu to coils (check) , please any ideas ? Do I need a oscilloscope for checking proper voltages coming to the coils or can I use a multimeter ?
Okay so I ordered new ngk ones and returned the AutoZone ones I got about 10 minutes down the road and it shut off. Brought it home and had a p0300 (crank sensor that might be the wrong code in not sure.) So I got a new one and nothing , replaced can sensors too nothing all oem but I noticed when I crank there's no rmp signal on my tool so I swapped with the old one and it's erratic so tried it unplugged still no spark I've tested power to coils (check)
Injector pulse (check) pulse from ucu to coils (check) , please any ideas ? Do I need a oscilloscope for checking proper voltages coming to the coils or can I use a multimeter ?
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Any crank or cam sensors not of Nissan make have been known to put you right where you are. The 300 code is for generic misfire and can have lots of causes.
Is denso not the oem?Any crank or cam sensors not of Nissan make have been known to put you right where you are. The 300 code is for generic misfire and can have lots of causes.
I guess ill buy an oem sensor from nissan i got the code wrong i cant have a misfire if the car doesnt run lol rn with the scan tool hooked up I dont have any codesIs denso not the oem?
okay so i ordered one from nissan and it is denso so now i have 3 of them one I just paid 170$ usd for and I still have the same problem I'll just get a new ecu and see if that worksAny crank or cam sensors not of Nissan make have been known to put you right where you are. The 300 code is for generic misfire and can have lots of causes.
Each injector harness connector has two wires; one is a constant 12V and the other one is a signal wire that can be tested with a "noid" light kit. Do not do a continuity test on the signal wire; it's easy to burn out the transistor in the ECU by doing so.
I used a test light I didn't do a continuity test and I was wondering if an oscilloscope would tell me if im getting the proper voltage as well or not but I will probably just tow the car to nissan or just part it out and put money into my mustang instead :/ I like the little car because its manual and v6 but its been a lot of trouble over the yearsEach injector harness connector has two wires; one is a constant 12V and the other one is a signal wire that can be tested with a "noid" light kit. Do not do a continuity test on the signal wire; it's easy to burn out the transistor in the ECU by doing so.
The signal wire does not provide any voltage. The ECU provides a temporary "ground" for an injector to function according to engine timing. An oscilloscope will show voltage during the switching of engine timing but most importantly it'll show if the pulses are steady.I used a test light I didn't do a continuity test and I was wondering if an oscilloscope would tell me if im getting the proper voltage as well or not but I will probably just tow the car to nissan or just part it out and put money into my mustang instead :/ I like the little car because its manual and v6 but its been a lot of trouble over the years
I never inserted the image of the duralast coil pack lol but I think my ecu is fkdThe signal wire does not provide any voltage. The ECU provides a temporary "ground" for an injector to function according to engine timing. An oscilloscope will show voltage during the switching of engine timing but most importantly it'll show if the pulses are steady.
anyone know of a place that does nissan ecu repair or can i go get an automatic ecu and somehow make it work with my manual transmission I know ill need the bcm and to get it all programmed so idk which will be cheaper
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