Car still won't start. Need help.

[OpenThrottle]

Its a 1995 240sx with a s13 SR20DET. Auto to Manual swap. The starting circuit on the side of the fuse box (top connector) has been jumpered. For some reason my starter is not getting any power, all connections are connected on the starter. Fuel pump is priming and I hear the injectors come on. As far as i know the clutch is disengaging. Checked all the fuses, and all are good. Took the starter to get tested today and it passed the test. There is only one relay that seems like its not getting any power and that is the Clutch Interlock Relay. I don't know jack about what the ignitor chip does but I checked it any way (checked both ends while one end being connected and the key in the on position) with a test lamp and the test lamp didn't turn on on either sides of the ignitor chip. I have a J4 ECU and I tried checking for ECU codes but there is no knob to turn for diagnostic mode. The Temp. sensor is not plugged in because there is not a plug on the harness for the sensor. Also, the MAF has not been wired in yet. Could the MAF not being wired in cause the problem? What else could be the issue?

Thanks for the help.

[Murdered_T]

unless you have a MAF eliminator, then yes, it needs to be hooked up. When the vehicle is deciding how much fuel to dump in the cylinders, it is taking readings from the TPS and the MAF and adjusting accordingly. Since there is no signal from the MAF, it will not dump any fuel. There could be other problems, but I would say try that first and let me know what happens.

[OpenThrottle]

alright i will try and get that hooked up. i might need help with how to hook it up (i have to rewire it) so i will post some pics tomorrow since i have to go to work in a few minutes. The thing is the starter is not clicking or anything like that.

[Murdered_T]

wait, the starter is not even clicking....hmmmmm, not to sound stupid, but have you checked the battery? you said the clutch switch is good right?

[OpenThrottle]

yea the starter is not clicking, when i took it to get tested it passed the test and the thing inside of the starter extended out so it works properly. i pulled the clutch interlock relay and checked it with a test lamp and the light did not come on. checked all the other relays and the lights did come on. the battery is good. it provides power to the whole car (lights, beeping sounds in the car and everything else). the car does have a stock theft system on there, could that also be the problem since the ECU was changed out or is that on a completely different circuit?

[OpenThrottle]

and what i mean by checking the relay: i checked the actual connector on the fuse box. i unplugged the top part of the relay and put the test light on the bottom part of the relay that is connected in the fuse box housing.

[Murdered_T]

look underneath the dash, there is a switch on the clutch, see if it is disengaging when you push in the clutch, it looks exactly like the brakelight switch

[OpenThrottle]

i see. i have no connectors in those switches. isn't the one on the front of the clutch only for the cruise control? i don't know what the back one is. i can look at the FSM later and see what its for.

[Murdered_T]

yea, the clutch switch needs to be hooked up in order for the car to start, safety feature. I forget which is which, but I have an illustration.



note the differences in the connector pattern.

[OpenThrottle]

that does make sense. i believe the switch is on the back of the pedal but i do not have the connector that goes in the switch. i might be able to source it out from a junkyard so i will have to see. could that cause the clutch relay to not get any power to it? it would make sense that the answer to that question is yes. i will see what i can do with it tomorrow and if i still have problems i will post back on here. thanks GOnissanTOM

[Murdered_T]

yes, if the switch does not engage, it will not send power. if you have the wires hanging out, just splice them togther, it should bypass the switch, just be carefull its not in gear when you start it.
Modified by GOnissanTOM at 2:53 PM 6/20/2008

[OpenThrottle]

which wires are you talking about? because i didnt see the wires hanging out when i looked under there a while back. i figured the switches had to be plugged in but none of the auto-manual swaps that i have seen talked about them so i figured that i didnt need them. if i dont have the plug that goes into that switch where can i hot wire it into. ACSD switch maybe?

[OpenThrottle]

Bump.

I checked back on the http://www.ka24development.com....html web site and from what i read there if you jump the top connector on the side of the fuse box then you wont need the clutch interlock switch. when put the power to the car and try to turn it on all i hear is clicking at the fuse box inside the car. im sure one of the relays is gone because all of the fuses are good. so i will have to double check them. any other thoughts everybody?

[OpenThrottle]

the car does have an factory alarm. could that maybe be causing the problem of it not wanting to start the car?
Modified by OpenThrottle at 7:34 PM 6/23/2008