Strange s13 sr20 starting issue (searched)

[SolaraOnBronze]

I recently purchased a 93 SR20 swapped 240sx hatch and was enjoying the car for about two weeks until this latest debacle...

I left the lights on for about four hours and killed the battery, which is a genesis slim battery. The previous owner seems to have been a little lazy and didnt run a relocation kit to the trunk, which I have since purchased and have yet to install.

Anyway, I had a friend come over and attempt to jump the car for me. The car was completely dead, so we left his car hooked up for about a half hour. After a few tries the car would turn over, but would not fire. We gave up for the night since we couldnt get the car to actually start.

The next day, I had another friend come out to give me a hand and try jumping the car. This time, the car wouldnt even turn over. The starter would not even click and the car had no power. I realized that the alternator fuse had blown (75A), so I replaced that and restored power to the car. The lights, dash lights, etc all worked now, but still nothing from the starter.

I charged the battery as well as trying a new battery, but nothing from the starter. I next read some threads and tried replacing the starter relay, but still the same thing- nothing from the starter at all.

At this point, we tried roll starting the car. I needed to get it home from school, but we couldnt get the car to actually fire. It sounded like it wanted to start, but never sounded like it was actually running and didnt respond to throttle or clutch inputs. We towed the car home and I graduated from school, so Im now home with the car.

The first thing I did when I got it in the garage is pull the starter and have it tested at autozone. Everything with the starter and solenoid checked out and worked as it should. Today I tested the clutch relay and the clutch switch. When I attempt to start without pushing the clutch in, the starter relay doesnt click. When I try with the clutch in, the starter relay clicks, so the problem must be from the starter relay back to the starter.

Im stumped at this point and Im open to any suggestions. My suspicion is that it's something in the wiring from the starter relay to the starter. I dont really understand what could have gone from attempting to start the car, unless a lot of power got backfed through the wiring.

Feel free to let me hit me with anything I should consider or try, Im stumped right now and would like to get the car running so I can start on the mess that is an engine bay. Thanks in advance and sorry about the novel.

-Damon

[RedlineDriftCoalition]

have you considered that it may be the ignition coil seeing as it wont start but it seems to be trying it sounds like it very well could be the ignition coil. if that doesnt work my guess is you may have accidentally rattled a ground or somethign of that nature because a loose ground can also cause very odd problems such as what you are experienceing i had a similiar problem with an 85 200sx changed out the starter tried everything but couldnt figure it out i repositioned a ground on the starter and i change out hte ignition coil and it fired right up....anyways hope this helped

[SolaraOnBronze]

Thanks for the info, appreciate the advice.

After messing with it more this weekend, here is an update on the issue.

Installed a new battery and that helped a bit since the slim battery just didnt have much power. The starter is getting power and when we short out the starter, the car turns over but will not fire. Starter still will not engage when the key is turned, only when shorted out. We pulled a spark plug and the car does not seem to be getting spark. Do you think this could be an ECU issue?

[the converted]

Have you checked all the fuses?

[SolaraOnBronze]

Aside from the Alternator fuse that was blown, all fuses seem to check out.

[ArmadaJspec]

Same thing happened to me. Check your Alt. FUSE* 75* , Located in fuse box under hood. and get a new battery.

[urbanskiben]

make sure the fuel pump is pumpin should hear a click when u turn the ignition to the on position

[jdm_master_X]

a similar issue happened to me when i first joined NICO. What I discovered was it was one of the connections to the fuse box to the lower harness. It is the 2 pin plug with a black wire and white wire trailing towards the starter. Come to find out, that it was separated from the harness. Check that out and make sure that is working properly.

[skaterfromvt]

check ur ign fuse...if that doesnt work open up your ecu and post a picture of it...no fuel no spark could mean your maf wires grounded out...and fried the ecu