JuMPiiN

Im just wondering if this is why my car wont start, please keep your flaming comments away.

I didnt ground the orange wire on the pigtail, car would start with the MAF unplugged but run like total S***, anyways I found out your suppose to either ground that wire to the chassis or wire it in with the black ground on the pigtail. Could this be why when I unplugged the maf it would start but run like garbage, plug it in it dies ? Or could something else be wrong ?

Also just to clarify this, I wired in a SOHC MAF and it did the same thing. Im thinking the SOHC was just bad since it came from a junkyard anyways been rained on, ext.

Long story short, would someone tell me if me grounding this orange wire on the pigtail will make the car run properly. Im using a SAFC to run the MAF 2in 6out. Thats ALL I'm using it for, no fuel or anything else is being tuned.

BTW I get fuel, and spark. I've been through 5 sets of spark plugs, ( cheap NGK's ) I have a set of Iridium's to go in once the car starts and idles correctly gapped at 28.

RACETUNE

-Does the car run normal with out the SAFC completely uninstalled?

-When did you have this problem first start?

More detail of the issue would help diagnosing less confusing.

-Frank

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-Garage BOSO-
-Racetune Engineering-

JuMPiiN

Well, no this is the first time I've ever started it since I've gotten the motor. Good compression, no leaks, not rebuilt or anything. I've reset the CAS like 10 times, I've tried the SOHC MAF I bought from a junkyard. Nothing. So I'm wondering that since I didnt ground the orange wire from the Z32 that maybe thats why the timing was off ? Its something with the timing on the engine. Im 100% sure of that. I need the SAFC to run the Z32 I know that, and im fairly certain that its 2in 6out for that setting. Im not using it for fuel or anything. Just using it to run the MAF thats all. I'm forced to use this MAF too because it's the only one that fits the Apexi intake kit I bought.
- Also just to clarify, I've unhooked the SAFC and tried to use the SOHC MAF, didnt even start, then I hooked the SAFC up again, unplugged the MAF and got it to start giving it throttle. Ran like total S***, Plug the MAF in, it dies instantly. I cant think of anything else. Also I tried using my friends ignitor,coils, ext nothing.

The only thing I could seriously think of it being was me hooking the MAF up incorrectly. AND the harness was sent off to Yuri at wiring specialities. So im fairly certain the wiring is correct.

Anything else you guys need to know to help out ? This is driving me CRAZY!

nismolvr

get the car to start with out the SAFC . Use the SOHC MAF first!Do this Before you try anything else.....Check and recheck Maf wiring to SOHC MAF.Keep it simple .

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JuMPiiN

I tried man, wont start with the sohc wired up im fairly certain its bad lord only knows how long it was in that junkyard. It will start with the Z32 wired in but unplugged, I havnt tried to start it since i grounded that wire to the chassis. Since my starter teeth were eaten off. Just waiting on the new starter to come in, which im guessing will be tmo or Monday.

I need another SOHC MAF and another intake if I use the SOHC or stock SR maf.

cotbu

check your ecu for stored codes! Our ecu stores codes for minor problems, if the check engine light or ecu diagnostic light stays on there's major problems.

Second, after you clear the codes for mafs, which you should have. Take the safc out of the car. (wiring and unit). Install the SOHC mafs check the voltage and signal wires also test for continuity.verify the wires go where the should go.

If you are stock the car should start and idle without the mafs, as long as timing and tps and everything else is copacetic.

It's going to be hell to diagnose, if you throw in aftermarket parts before you ever get it to run correctly.

I also suggest you/we run through the timing procedure again as well, I've witness the cause major headaches.

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LoverTechnologies "Half Broken Things!"

JuMPiiN

Code 55, no error already done it. only thing aftermarket are braided lines for the turbo, tomei exhaust manifold, greddy manifold, thats all.

As for timing, set to top dead center, line the CAS up, remove valve cover to see the dots, as you slide the CAS in it should pop right into place, set the CAS to the middle. Boom timed. Im pretty sure im doing it right, I've done it a few times. Im positive its a timing issue.

And I've disconnected the SAFC and tried to run the SOHC maf. Nothing. Same thing. I can get it to run with the SAFC hooked up, Z32 unplugged. Idled CRAZY I had to give it gas not much just a little to keep it alive. I've checked ALL vacuum lines, no leaks nothing. So nothing really makes sense lol. Like I said I've unhooked the SAFC completely and tried to run the SOHC maf. And it will not start. But I can atleast get it to start with the Z32 unplugged.

cotbu

I would make sure you can throw a code, If you did all those things, you should have a mafs code, period. And you saying you can start the car with the z32 mafs, unplugged with safc hooked up makes me think it's a wiring problem. Install the SOHC mafs and put the in and out for s13 sr, 6in 6out or whatever and see if the car will start either way you should have a code for mafs.
We may have an ecu problem here.

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LoverTechnologies "Half Broken Things!"

JuMPiiN

I mean ofcourse I throw a MAF code when it isn't plugged in I'm actually fairly certain I had it hooked up wrong, what I'm mainly wondering is if the MAF was wired incorrectly would that cause the timing to be off? I know for a fact it's the timing that is off. Bc I have spark, good compression and I have fuel, don't throw any codes when the MAF is plugged in. So its definitely the timing. If I retard the timing it almost starts, seriously it just seemed like the timing was 180 off. I'm thinking if I re wire the MAF correctly it will start and run fine, but with the MAF wired wrong would that cause the timing to be off? I think it would but I'm not certain. If that's the case it's def the MAF.

KiLLeR2001

Sounds like you're not stabbing the CAS correctly...

How To Set Crank Angle Sensor (CAS) Timing on the SR20DET Engine

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JuMPiiN

I've followed that step by step that was what I used for a guide.

JuMPiiN

Sadly I'm fixing to give up...... This is so aggravating.

KiLLeR2001

You have even compression on all 4 cylinders? What's the psi? Also, your SR is stock and you're gapping at .028? Factory gap is .036 fyi. Might have a malfunctioning CAS or something is fishy with the ECU.

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JuMPiiN

Well the CAS and ignitor are brand new, coil plugs and harness to them are new, and the ecu says code 55. Makes no sense what so ever.

JuMPiiN

I read in like 5 different places that the gap was .28-.30 it's really .36!?

KiLLeR2001

Everyone likes to gap their SR's to .030 because they are boosting a little more than stock, but factory gap is most definitely .036, not that its going to prevent your car from starting but you might want to open it up a bit.

What is the history with the mechanical timing on this car? Was it running before you had it? Did you mess with the cams at all?

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JuMPiiN

Not sure, it came with the car when I bought the car, the only thing mechanical I've done was change the intake manifold, and grind away my old power steering pump from the KA for it to fit lol. Other than that it's completely stock, I mean I changed the seals, water pump and oil pump, new thermostat but nothing internal at all. I guess I'm setting the CAS wrong so I'll try it again, it's something with the timing I'm 100% certain. Maybe my MAF is bad?

KiLLeR2001

When you set to TDC for CAS insertion you need to make sure the cam sprocket markings are correct as well as the outer cam lobes all pointing outwards. You can turn the engine over a couple times to get the cam sprocket markings correct, however if the cams aren't facing out then when you go to stab the CAS it'll be completely wrong.

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JuMPiiN

Alright Im fixing to try exactly what you said, unhook the MAF and solder it in how FRsport says. Hopefully it works.

JuMPiiN

Did it, timing is on, the MAF is F'ed up I'm pretty sure. Screw this Z32 and this safc. I just want a stock SR.... Nothing fanc

JuMPiiN

I was thinking about it today and I think I figured out why the timing is off. Someone chime in and tell me if my theory is correct, my friend who had this intake ran the filter and z32 on his Cadillac ( like a CAI ) and I thinking for the year he did that since the z32 didn't have a constant going to if and wasn't being used but had airflow daily it screwed the sensor. Someone tell me if my theory is correct ?

JuMPiiN

Update:

Bought a oem sr20 MAF hooked it up, still nothing it sees to ALMOST want to start but it falls right down on it's face. So I'm going to list any/all mods done to the car and maybe go from there.
First the SR was bought 2 years ago from a importer in Dallas, bone stock. Mods I've done, GReddy intake manifold, stock injectors, stock block, good compression on all cylinders, engine has never been opened except to replace the valve cover gasket and set it to TDC. Tomei exhaust manifold, Apexi b70 turbo since my stock t25 was blown, Megan elbow, trust downpipe, Tanabe exhaust, GReddy catch can, GReddy type s fmic, GReddy type r BOV ( uncirculating ) HKS race super suction intake, walbro 255 intank, yellow top optima relocated to trunk with 00 wire in battery box, Pretty sure that's it.
Second:
I've replaced the coil pack and harness and ignitor chip with a buddy's just to see if that was the culprit and still the same thing so mine are just fine, my CAS and ignitor chip are both brand new, ecu says code 55 nothing wrong, I've opened it and there are zero burns. I've tried unplugging the MAF, still won't start, unplugging the TPS, nothing, I've followed the guide from FRsport step by step on setting the CAS like 5 times. So I'm at a loss. If someone or anyone can shed some light please do. Because I'm close to giving up.

Also forgot to add, I get spark and fuel, I've fouled about 5 sets of spark plugs trying to figure it out, NGK iridiums, ive gapped them from.028-.036. Nothing. So I'm desperate someone help me.

JuMPiiN

Also not sure if it matters but I'm using a Z32 fuel filter and using the stock rail and injectors with the stock FPR.

cwallace12

Have you tried a different ecu?

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JuMPiiN

I havnt done that yet lol, I don't know anyone local I could swap out with to check it. I wonder of that would work lol, there's only like 5 SR's in my city.

JuMPiiN

Getting a ecu in the next couple of days found one somewhat local, so let's see if this works.

JuMPiiN

If this new ecu doesn't fix it, anyone else have any ideas?

Pure_JDM

I've got an SR ECU as well if you need to try it. (It's the one I'm using; not for sale)

JuMPiiN

Where are you at again? Anywhere somewhat close ? Lol

JuMPiiN

Just ordered another ecu, so if this doesn't help does anyone of you SR guru's have any other ideas on what it could be, all the vacuum lines are new, couplers are new, everything is new. And I read it could be the BOV, but I have the GReddy type r and it isn't recirculating. So idk I'm out of ideas after this.