car wont turn off

[xclusivez32]

i finally get my car started after putting new heads on and hooking everything up, now car wont turn off with the key. i read on the 240 forum that when the MAF shorts or grounds out it does something to a pin somewhere? the maf wasnt wired properly when i got the car and i seen some smoking wires from the maf. any ideas on how to fix this ? i think this is related when the key is turned to the on position i can hear a clicking noise coming from under the dash.

[xclusivez32]

what are the chances of it being the ecu because of the maf wires grounding out?

[REDWINTERZ]

Have you tried running the ECU codes yet?

[Zwicked]

I can't see the MAF doing that as it has nothing to do with powering the injectors, coil packs etc. Maybe your ignition switch/tumbler is faulty.

[xclusivez32]

thats what the guys on twinturbo.net said too, so thats going to be what i try first. if anything what would the maf wires grounding out do? do they have a relay? or an inline fuse?

[PAintballa45]

Hey i'm actually having the exact same problem, dash lights turn off....car stays on. I ordered up a new lock & cylinder, just replaced the ignition switch and it didnt change anything. going for the cylinder next.

[PAintballa45]

got the old ignition drilled out, installed the new cylinder & switch, same problem.

[Villain3g]

i had the same problem, mine was cause from a short in the injector plug wires. i fixed the short and got the car to start but then it wouldn't shut off. I changed the ignition switch, that didn't help. Then i picked up a used ecu on ebay. Now the car starts and turns off.

[labcoatmonkey]

sooooo could it be that an injector short can damage the ecu to the point were it will make the car hesitate at 2000rpm and not let it turn off? I have that problem too. The old injector went ( and I think it had a short in it) so i replaced them and now it wont turn off, except for the stereo.

[labcoatmonkey]

What are the possible causes of a car staying on? It started doing this to me maybe 2 days ago after an oil change. =x Car wont turn off even with the battery disconnected. I had to choke it at the maf and im not a choker so i felt a little wrong. HELP i wana drive this b****!

[xclusivez32]

i replaced my ecu and it fixed my problem. But my MAF grounded out and sorted pins in the ecu, so unless one of your sensors sorted out, i would go with the ingition first. But do some research dont just go with what everyone says if i did i would have been out more $$ replacing things that didnt need replacing. Hope i save someone some time and money

L8er

[evildky]

main relay?

on older cars a bad voltage regulator caused this problem, not sure if it could do the same wiht these, try unplugging the alternaotr start the car and see if it'll turn off

[labcoatmonkey]

Which one is the alternator fuse? Is it one of the fuses infront of the battery?

I pulled the Egi relay out and the car turned on and off no problem, so that omits the tumber and switch... I also tried putting in another relay and the same problem occured. I tried pulling the 2 big fuses to the left of the battery and the car still wouldnt turn off. I am aware that there is current drawn even when the car is off, it has been doing so since I put the plenum back on, but it started NOT turning off only like a few days ago. Could it be a ground wire somewhere? I cant seem to find the issue.

[evildky]

you misunderstood, there is no alternator fuse, you have to unplug it

[labcoatmonkey]

How far do I have to dig to find that plug I gotta lift the car? If so Im pretty sure my h/g went today so Im just gonna look for a new block since the compression in mine was pretty shot too. Sorry for thread hijack even tho it kinda died a little, i wunder if xclusivez ever fixed the problem?

[evildky]

How far do I have to dig to find that plug I gotta lift the car? If so Im pretty sure my h/g went today so Im just gonna look for a new block since the compression in mine was pretty shot too. Sorry for thread hijack even tho it kinda died a little, i wunder if xclusivez ever fixed the problem?

yes you need to get to the alt fomr the bottom\\\as for your engine, rebuild don't replace

[labcoatmonkey]

so the problems is not the alternator, it is somewere in the ignition circuit, not the switch or the tumbler. If I yank the Ignition coil relay the motor shuts off but the accessory lights stay on. If i yank the EGI relay, the car shuts off fine. I got a few ignition diagrams but I cannot seem to find the short (I hope its not the ECU)

[evildky]

main relay?

[labcoatmonkey]

main relay?

Are you referring to the Egi/fuel pump relay? Im sorry for dumb questions I am still learning a lot about his over engineered machine. Were would the main relay be located? I have looked through most of the circuit schematics on the ZCAR.com page, so I could trace the short, but no luck so far
Things I have tried:

Unplugging the Ign Switch
Unplugging each relay under the hood one by one. (EGI allows the car to shut off properly, while the IGN COIL relay just cuts the feed to the engine but the accesory lights stay on.
Tracing the "possible" short, but no luck so far

This leads me to another dumb question, where is the ECCS relay? is it in the d/s footwell with the fuses?

[sharky]

try the ignition switch i had mine do the same thing had messed up timing and when it finally did turn on it didnt want to turn off! i had to pull an intake tube to kill it! it was my switch got it at nissan for like 30 buck or so. didnt need the whole tumbler just the switch itself. its on the top has like 6-7 wires going to it. but disconnect the alternator incase cause if you pull the terminals off the battery it wont kill the engine!