Car wont start/idle Redtop SR

[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

[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 .

[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.

[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.

[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 (http://www.frsport.com/How-To-Set-Crank-Angle-Sensor--CAS--Timing-on-the-SR20DET-Engine_t_25.html)

[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.

[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]

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

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?

[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.

[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?

[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.

[92dagrey]

the only thing i can think of is an incorrect amount of air flow. is the ecu u have chipped or tuned in anyway? I think (not 100% certain) when you change mafs you are supposed to change your tune. the z32 maf is made for more air flow. Also your ecu is tuned for a t25 turbo, since your using a b70 (i think?) the air flow is probably different. (I dont know anything about that turbo). You could also have a boost leak which is a freakin nightmare. Recirculating your bov shouldnt make it start or not start. that would make it die after you hit boost and let off all the pressure. (like hittin 10 lbs of boost then coming to a complete stop)

[JuMPiiN]

No it's a stock ecu, I ordered another one it should be here by Wednesday. If a new ecu doesn't fix the problem I'm at a loss of what will

[JuMPiiN]

Also the wastegate is disconnected until I do get a tune. So I don't really think that matters right now. And I was going to use the safc I had to run the z32 MAF. But I sold the MAF and safc on here a week or so ago and picked up a working stock MAF with a pigtail. And I picked up another ecu that I should have by Tuesday or Wednesday. If that doesn't fix it I'm shipping it off somewhere to get it right.

[JuMPiiN]

No go on the new ecu, so with that said anyone local want to help me out?

[sr20comic]

I'm having the same issue, I just tried starting fluid and it just blew up in my face. I've got spark and fuel, I'm thinking the CAS or ECU are the problem but I'm scared to spend the money and that not be the problem, I'm the only Sr in my town so I can't swap with anyone. Anyone live near ridgecrest California who can help me out?

[KiLLeR2001]

Lets start with the basics. Whats your compression on all 4 cylinders?

[sr20comic]

I'm not sure exactly what mine is but I had it checked when I got it and it was good

[Catch240]

does the car run without the safc plugged in an die when you hit the throttle or just die?

[sr20comic]

Mine doesn't have the safc, all it does is crank, doesn't even try to turn over

[bb4_96]

This is going to sound stupid but how are your fuel lines hooked up?
-Do you have an aftermarket fpr?
-Aftermarket fuel pump?
-What's your fuel pressure at the rail?
-are your injectors in decent shape?
-have they been flow tested?
-after extended cranking are the plugs wet?
-is your motor properly grounded?
-Get rid of that safc before you call quits on your motor

Your car should start with maf unplugged and bog and run like sh*t.

-Did you solder the wires and keep the shielded sections or did you do a hack job on the maf install?
-can you test continuity between ecu terminals and corresponding maf terminals?
-Did you short something out in the harness?
-Do you have fresh gas?
-What is your battery like?

[Rusker]

Are you absolutely, 100% sure the CAS is timed properly?

[JuMPiiN]

Sorry I i didn't update my thread, sileighty_85 fixed it in a few hours lol. Turns out my new CAS was bad, and my old one was good lol. And there were some damaged wires along the ecu. And my oil pan and pick up was dented. He fixed it and it runs PERFECT. Now u have a problem with my trans/clutch. Made another thread with a video.