ignition switch problem 240sx

[mattrobertsxn]

so i couldnt get my car to crank, i could just hear the relays click. So i replaced the ignition switch this morning and bam car starts up. idles for 5 minutes perfectly.

// Backround info - BRAND NEW BATTERY. also coolant shot all over my alternator when a hose came off. I think it a lot hit the alternator but cant confirm because i was driving.

Also. I just ignored the wiring for my viper alarm since i just wanted to see if the ign switch was problem, so i just left the other ign switch hanging onto all the other wires that were spliced into it for my alarm. Not sure if my alarm is preventing me from turning over the car, and its not even remote start.



I attempt to turn on my headlights ( they dont work idk why) and the car shuts off instantly. They didnt even turn on and the motors didnt even flip up the lights. ????. :picardfp:

Get the car to start again, turn on headlights and they pop up, no problems this time.

car steadily idles then dies a couple minutes later and havent got it to start except once when i unplugged the ign switch and plugged it back in then car would crank again. Didnt start though because fuel pump was toggled off.

I used a multimeter and tested two wires connected to the switch, and when i turned the key, the volts dropped immediately from 12.5v to 0v

Now i cant get the car the crank at all. Will try again tomorrow i guess.

What do you guys think?

Please if you have any knowledge on electrical stuff, i would appreciate help. im not the brightest with electrical shit.

[mattrobertsxn]

morning bump anybody got ideas? i think im going to get alternator tested.


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[Green Arrow]

I did the same thing, and then had the no start problem after parking it over night. My problem might not be yours, BUT....I think the double relay hidden next to the battery (on the left) is connected to the circuit...it controls the clutch switch....pull it out and jumper the big plug and leave the little one completely unplugged. This was my solution to my problem. Can’t say it’s the same thing.

Someone’s gonna come in and comment just to say “SEARCH”, f them.... these cars are old and have numerous electrical nightmares. Good luck bud!

[Green Arrow]

and get rid of the viper, these cars are too easy to steal and no security system will stop anyone that is determined.

[mattrobertsxn]

I did the same thing, and then had the no start problem after parking it over night. My problem might not be yours, BUT....I think the double relay hidden next to the battery (on the left) is connected to the circuit...it controls the clutch switch....pull it out and jumper the big plug and leave the little one completely unplugged. This was my solution to my problem. Can’t say it’s the same thing.

Someone’s gonna come in and comment just to say “SEARCH”, f them.... these cars are old and have numerous electrical nightmares. Good luck bud!



Do you mind taking a picture of the two relays and which one you jumped? Would appreciate it.


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[mattrobertsxn]

forgot to include this : car is a manual swap. I didnt do the swap, but when i bought it the guy said he and his buddies did the swap.

[Green Arrow]

Well then it’s likely you don’t have the relay, you should however have a jumper on a connector near the fuse lock...which one? I don’t remember....on s14 it’s on the engine side of the fuse block, second one down. You can take this information and search and find the exact answer. Run through a few manual swap threads....this is probably where your problem lies.....and get rid of the viper alarm..

[mattrobertsxn]

isnt it a bitch and a half to get rid of it? Idk why i wouldnt just leave it. Ill read through some manual swap forums today and all that though. And get alternator tested just bc i think its bad. I think your talkin about the neutral safety switch i have that jumped right by that battery.

[mattrobertsxn]

Got the car started. Not sure what changed but i got starter tested and it was fine. Moved around some relays as well. Car is detonating and running rich, think its my injectors but ill find out when i buy new ones.

[mattrobertsxn]

anyone know what the consequences of driving my car like this would be? Tried new spark plugs and it doesnt seem like its coming from valve cover. Looks to be a mixture of gas and oil its not very thick. And builds up pretty fast in the spark plug hole. Have cleaned it multiple times. Could it be an injector? Think mine are going out.

As you can see below the gas / oil is filled up almost to top of spark plug.

https://uploads.tapatalk-cdn.com/20181106/3bb17ec2481d00290008891d3a02c83e.png


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[jedi03]

valve cover gasket...can cause detonation from lack of continuity...

[mattrobertsxn]

was the valve cover gasket didnt think it was because nothing was coming out of the spot for like 30 mins while i had the plugs out.. . For now this thread is done! All problems fixed appreciate anyone who helped.