Im back!

Discuss topics related to the CA18DE and CA18DET series engines.
Sideways s12
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Im back!

Postby Sideways s12 » Sat Aug 08, 2015 1:49 pm

Some of you know me most probably don't but either way I'm back haven't been on in awhile due to a plan to move to the U.K. turns out our plan fell through so we are no longer moving. In that process, I sold my beast but I do have another one lined up. As soon as I take ownership I will be back with another build!


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float_6969
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Re: Im back!

Postby float_6969 » Mon Aug 10, 2015 4:21 am

Damn, I loved your old S12. Sucks that you sold it to move and then didn't. Welcome back though!!!

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Re: Im back!

Postby AZhitman » Mon Aug 10, 2015 8:30 am

WOOOO! Welcome back man!

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Re: Im back!

Postby boost_boy » Mon Aug 10, 2015 9:42 am

Welcome back Kiddo! :gapteeth: This time, save the headaches and do it right with minimal issues. you should be a pro at this by now.

Sideways s12
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Re: Im back!

Postby Sideways s12 » Mon Aug 10, 2015 3:16 pm

boost_boy wrote:Welcome back Kiddo! :gapteeth: This time, save the headaches and do it right with minimal issues. you should be a pro at this by now.
Lol I didn't do anything wrong on the last one. I bought someone else's s***.... thanks for the welcome back!

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Re: Im back!

Postby Sideways s12 » Mon Aug 10, 2015 3:20 pm

float_6969 wrote:Damn, I loved your old S12. Sucks that you sold it to move and then didn't. Welcome back though!!!
Yeah it sucks but hey the next one is a lot cleaner and the swap looks to be done right the harness doesn't look like a rat's nest like the last one, so that's a plus! It's been sitting for a few years but starts right up it does have old fuel in it and smokes a little but seems to be rich. I'll figure it all out when I take ownership!

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Re: Im back!

Postby Sideways s12 » Mon Aug 10, 2015 3:21 pm

AZhitman wrote:WOOOO! Welcome back man!
Thanks bro!

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Re: Im back!

Postby Sideways s12 » Tue Jan 12, 2016 3:57 pm

Still here. Just waiting on tax time so i can finish paying off the s12... soon tho...

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Re: Im back!

Postby float_6969 » Wed Jan 13, 2016 6:26 am

An no pics?!?!?

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Re: Im back!

Postby Sideways s12 » Tue Jan 19, 2016 6:36 am

I only have one right now I will post plenty when I take ownership!

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Re: Im back!

Postby Sideways s12 » Thu Feb 11, 2016 1:08 am

Finally! I'm back in the game just took ownership of an 84 nissan s12 with 18det. Has a couple of issues that I need help with. The cars running a Super AFC the old school one with the Knobs and a plx wideband.

First problem is she's running super rich. (Stock injectors adj fpr set at 32 psi.) Not entirely sure how to tune with the knob style AFC as I've never used one.

Second, I think I have a maf problem as the car will not rev past 2500 like it's in limp mode. When I unplug the maf the car dies... when plugged in if you play with the wiring on the AFC it changes the idle... which tells me the maf wiring my not be right but thst doesn't explain why it dies when the maf is unplugged. The car should run in limp mode like it does when its plugged in...

Any help would be greatly appreciated!

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Re: Im back!

Postby float_6969 » Thu Feb 11, 2016 7:55 am

Always start with codes. You'll have to clear them first because you tried to run it with the MAFS unplugged.

Then eliminate variables. Remove the AFC. The fact that moving it changes the idle tells me that there's something wrong there.

Lastly, and this is just my intuition, that maybe those aren't stock injectors.

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Re: Im back!

Postby Sideways s12 » Thu Feb 11, 2016 9:35 am

The P.O. said they are brand new stock injectors, I'm starting to think the same thing tho as it extremely rich. But I forgot to mention that when I drive it the afrs read 10.0 then if I give it gas it starts to accelerate and the goes extremely lean and the car dies if I stay in it once I release the afrs come back down... If I unplug the afc it immediately dies...

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Re: Im back!

Postby float_6969 » Thu Feb 11, 2016 9:47 am

You can't just unplug the AFC, as it's intercepting the MAFS signal. That being said, with it unplugged, it should restart and go into limp mode. If that doesn't work, you may have another sensor out. IIRC, if you loose the CTS and the MAFS, the engine won't even run in limp mode, so you should check the resistance/temp curve on the CTS as well. It could also be a wonky CAS. They seem to cause all kinds of weird problems when they start to fail.

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Re: Im back!

Postby Sideways s12 » Thu Feb 11, 2016 1:09 pm

I really hope that it's not the cas as they are hard to find... and no it doesnt run in limp mode when the afc is unplugged but it runs in limp mode when it's plugged in. Maf signal or sensor sounds like the issue but I'm guessing at this point....

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Re: Im back!

Postby Sideways s12 » Fri Feb 12, 2016 11:56 am

So I checked for codes based on a youtube video I saw ( I couldnt get to a comp) and the only code I got was 55 that mean all clear correct? Also when I unplug the afc it actually does runin limp mode nothing changes with the afc plugged in or not. I cant remove the afc as I have no idea how he has it wired in some wires go to the ecu and one wire goes to a fuse box he made... So I'm completely lost... I'm currently waiting for my buddy to get back to me so he can give me a price on wiring... I despise that s*** and I know I'll f*** it up..

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Re: Im back!

Postby Sideways s12 » Sat Feb 13, 2016 12:31 pm

Also has a high idle but I think that has something to do with the tb screw being screwed almost all the way out...

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Re: Im back!

Postby Sideways s12 » Wed Mar 09, 2016 8:18 pm

Ok, so I found a big issue my hks bov is literally blowing air out of the system during idle like 80 % of the air is coming out of the bov like a hairdryer right before the TB that explains why I'm incredibly rich . So in essence a huge vacuum leak!

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Re: Im back!

Postby float_6969 » Wed Mar 09, 2016 9:01 pm

That's weird, is it a real HKS, or a knock off? Maybe it's just stuck. I ran a SSQV for years and never had a leak or any other issues.

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Izento
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Re: Im back!

Postby Izento » Wed Mar 09, 2016 9:50 pm

I'm not too sure if mine was a real one, but my HKS had the same leak. I ended up buying another one (used) and moved on with my life.

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Re: Im back!

Postby Sideways s12 » Thu Mar 10, 2016 6:46 pm

Float not sure if its real it says hks on it if that's any indication lol, Izento yeah I'm just gonna replace the whole ic pipe it looks sketchy anyway and then pop for a tial when I get the money...

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Re: Im back!

Postby float_6969 » Thu Mar 10, 2016 7:16 pm

I don't think the fake stuff says HKS on it. If you're running low boost, you don't really need one anyway.

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Re: Im back!

Postby Izento » Fri Mar 11, 2016 2:46 am

The real HKS ones are suppose to have a holographic HKS logo. But I don't believe the old HKS BoVs have holographic logos.

As for Tial, I like the brand, they are top notch, but I just don't like the sound of Tials. It's more of a smooth rush, opposed to the HKS which is more of a whistle. I do like Greddy valves though, which is a mix of the two. Turbosmart is also pretty damn loud. To each his own though, BoVs are just personal preference between the brands and sounds, no real advantage over each other.

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Re: Im back!

Postby Sideways s12 » Fri Mar 11, 2016 4:47 pm

Float: Yeah I'm running wastegate on the bb t28 that's on the car so the temp fix will be replacing the pipe and I'll get a tial when the funds permit!

Izento the sound doesn't really matter to me as long as it works!

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Re: Im back!

Postby Sideways s12 » Sun May 01, 2016 5:18 pm

ok So I fixed my super rich on idle issue turns out the afc was on the wrong setting I now just have to replace the IC pipe with the leaky bov and figure out my maf issue I depinned the plug and connected straight to the maf to ensure a positive connection. When I did the idle immediately smoothed out and the revs went up ( due to the tb screw ) but then it went back to limp mode. I need to get a test light on the wires and make sure they are good and also a multimeter to test the maf but I honestly think the maf is done.

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Re: Im back!

Postby PLXDevices » Tue Jun 28, 2016 9:38 am

Do you have any photos of the build or of your PLX wideband installed (or are you running a PLX gauge as well)? It would be sweet to see a setup in an S12. :)

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Re: Im back!

Postby Sideways s12 » Sat Jul 02, 2016 11:45 am

I don't currently have any pics atm but I can get some when I'm free....

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Re: Im back!

Postby Sideways s12 » Sat Jul 02, 2016 11:59 am

I don't currently like the way it's wired in right now hopefully I can change that...

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Re: Im back!

Postby Sideways s12 » Fri Jul 15, 2016 2:08 pm

Ok guys I need help with the wiring and the best way to attack this. Mind you I suck at wiring so if you are going to explain this to me you have to do it in the stupidest way possible ( as if you're trying to explain something to someone with downs) I was in the process of chasing my maf issue. While chasing the wires I moved the ecu so I can get an easier view and check the pin out, well after moving the ecu the car won't start. It used to run in limp mode and I could move it under it's own power from spot to spot but now it cranks and won't fire.

Now my question is should I try to attack this harness and try to fix it ( with limited knowledge on electrical) or should I wait for the wiring specialties harness that's coming out in august and just wire in the necessary sensors?

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Re: Im back!

Postby float_6969 » Sun Jul 17, 2016 5:59 am

Dude, if moving the ECU made the car not run, that harness is toast. The only things that will make it not run are bad power/ground connections or a bad CAS signal. Any other sensor failure should at least let it start.


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