used240sxparts

that harness looks like it was hacked up before yu got it

Gjohnson7

Yeah, you have no idea. The person the did the inital SR swap needs to be dragged out back and shot.

When I pulled this harness out most of the wires were just twisted together and wrapped with electircal tape.

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LSX Kouki Project, swap completed in Dec 09

Gjohnson7

Ok, here's my new question. I swaped over to the 62 ECU, but I' still trying to get rid of the weird blinking thing. I don't think it's the cluster, because I hooked the ECU up and left the dash wires unplugged and I still get the blinking issue. Where should I start looking from here?

Also, now that I swapped to the 62 ECU the engine isn't running as good. It stumbles now when you give it gas. If I slightly open the throttle, it tries to die. Do the differnet ECU's have require the timming to be changed? What could be the issue? A bad ECU???

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LSX Kouki Project, swap completed in Dec 09

zaneithan

check your timing, check the tps, check grounds, check to make sure the ecu is plugged in tightly

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1993 240sx fastback (wrecked)
1991 240sx SE fastback Daily Driver status
1992 240sx fastback (???)
1986 Toyota Corolla SR5 Coupe (sold)

Gjohnson7

How do you reset the TPS on a redtop SR?

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LSX Kouki Project, swap completed in Dec 09

Gjohnson7

Alright, well I haven't figured out the Tps issue yet, but I figure I should move on to my Tach issue. Here's my question, what do I need to check to make sure my I am getting a tach signal. Maybe I don't have the right sensor plugged in from the SR Harness to the engine.

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LSX Kouki Project, swap completed in Dec 09

burnsauto

Yellow / Red stripe =Tachometer signal

Yellow / Green stripe = Speedometer signal

Orange = Ignition start

Black (may be more than one ground) = Ground

Blue / Green stripe = AC signal

Blue / Black stripe = Water temp signal

#62 is the correct ecu, timing should be 15* before tdc (second mark from the right)

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Gjohnson7

Yeah, I wired the harness using this info, but I was talking about what actually connects to the engine for the Tach signal. A buddy of mine was saying some after market tachs will use a signal from on of the ignition coil wires. Does the tach signal run off of the TPS sensor or speed sensor on the Tranny? I figured there must be a separate sensor for the tach.

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LSX Kouki Project, swap completed in Dec 09

Gjohnson7

Ok, I pulled my wire harness to look it over and make sure everything is wired correctly. Now here's my delima. I am able to match the wires below with the exception of the AC signal, but most of the other wires on the harness don't match. I know the writeup's say that they are on used for the consult, but I was planning on running AC and I don't know which wire to connect the Blue/green wire to. Also looking at the SR and KA connectors the wires are being pinned in at diffrent spots, is there more than 1 wire harness for these cars. My Chassis is a 90 SOHC and I'm wondering if the wire connectors and colors may have been different for the SOHC. Does that make sense? Right now with the harness installed the car starts and will Idle (not too smoothly, but that may have something to due with not running an 02 sensor) but my Tach is not working. Even after swapping in the DOHC cluster. And like I said above, I get a weird clicking from my headlight down relay even though the headlights aren't on the car. All help is appreciated.

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LSX Kouki Project, swap completed in Dec 09

Gjohnson7

Anyone?????????????

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LSX Kouki Project, swap completed in Dec 09

Gjohnson7

Ok, well since no one has an answer to the last question, how about this one.
I can't understand why this was even done. It's a little hard to see, but there are 2 plugs that were apparently cut and partially wired in when they did the inital swap on this chasis. Am I missing something, cause from what I've read this isn't something that needs to be done.







I'm thinking this might be causing my other issues.

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LSX Kouki Project, swap completed in Dec 09

Gjohnson7

Bump!!!! Anyone?????

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LSX Kouki Project, swap completed in Dec 09