S13 KA Into S14 Swap Problems…Iffy Throttle, No Electronics?? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

bryzenga · 03-29-2014, 02:50 PM

Finished swapping my old KA out of my S14 for a lower mileage, actual running KA out of a S13, got everything hooked up and now I've run into a few problems.

Problem #1 is my electronics issue. Everything electronic worked before I did the swap, even my power mirrors and windows. Car starts up and runs fine…kinda. Did the timing by ear so that's probably a tiny bit off and it sounds like there's a misfire (but at least there's no rod knock like my other one). But anyways, I start it up and have no electronics whatsoever but my headlights. I pulled all my fuses, didn't blow any of those. Made sure every ground was hooked up, etc. Video below shows what i'm talking about.
https://www.youtube.com/watch?v=8zfV...AHkm6gwOvxcBmw

Problem #2 is my throttle. Car runs and drives but anything past 2k-ish rpm is very sluggish. Literally I put my foot down in 1st or 2nd gear and all it does is make a little more noise, no instant throttle response like there should be. Thinking it may be the TPS since its a S13 KA but a S14 harness? Maybe? Also my diff is crap. PO said he used to drift it but it is an OPEN diff so thats probably messed up. Picked up a new one from a Zilvia member yesterday and I will be swapping that in eventually but I didn't know if that had anything to do with it.

How do I make all of these work again? Any help is greatly appreciated!

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

03-29-2014, 02:50 PM	#1
bryzenga Leaky Injector Join Date: Sep 2013 Location: Severna Park, MD/Salisbury, MD Posts: 91 Trader Rating: (4) Feedback Score: 4 reviews	S13 KA Into S14 Swap Problems…Iffy Throttle, No Electronics?? Finished swapping my old KA out of my S14 for a lower mileage, actual running KA out of a S13, got everything hooked up and now I've run into a few problems. Problem #1 is my electronics issue. Everything electronic worked before I did the swap, even my power mirrors and windows. Car starts up and runs fine…kinda. Did the timing by ear so that's probably a tiny bit off and it sounds like there's a misfire (but at least there's no rod knock like my other one). But anyways, I start it up and have no electronics whatsoever but my headlights. I pulled all my fuses, didn't blow any of those. Made sure every ground was hooked up, etc. Video below shows what i'm talking about. https://www.youtube.com/watch?v=8zfV...AHkm6gwOvxcBmw Problem #2 is my throttle. Car runs and drives but anything past 2k-ish rpm is very sluggish. Literally I put my foot down in 1st or 2nd gear and all it does is make a little more noise, no instant throttle response like there should be. Thinking it may be the TPS since its a S13 KA but a S14 harness? Maybe? Also my diff is crap. PO said he used to drift it but it is an OPEN diff so thats probably messed up. Picked up a new one from a Zilvia member yesterday and I will be swapping that in eventually but I didn't know if that had anything to do with it. How do I make all of these work again? Any help is greatly appreciated!