Almost year and still no start....

For the RWD SR20DET cars! Sponsored by Wiring Specialties.
kingdutka
Posts: 209
Joined: Wed May 02, 2007 8:18 am

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I followed the guide I found here: http://www.turbosmartusa.com/i...id=32

It has pictures with arrows pointing exactly at where to connect the blow-off valve vacuum line. I hooked that up just now and my symptoms have completely changed. It idles very well, but any amount of throttle at all causes it to cough out and die.

I have a brand new MAFS on the way. I'll have to get out there again and pick apart the wiring on that one specific plug and report my findings.


blinker_fluid
Posts: 303
Joined: Mon Feb 19, 2007 4:21 pm
Car: 1991 Nissan 240SX FB
2000 Nissan Maxima SE

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iirc... the maf should have three pins..might be wrong though

kingdutka
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Joined: Wed May 02, 2007 8:18 am

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I got this off the Heavy Throttle website. I'll interject my comments so you can maybe see my pretty low level of knowledge in this kind of thing:

"The vacuum lines are simple: 3 lines start at the throttle body. The bottom one goes to the canister, block it off unless you are using the canister."Ok, I see 3 lines and one looks like it goes to a black canister "The larger one on top runs to the bypass valve (BOV), there should be no tee's or branches - go directly to the BOV." Uh oh, mine has a tee in it. One to my BOV and the other somewhere by my turbo charger... "The smaller top line splits to the fuel pressure regulator, and runs across the front of the engine to your boost gauge and/or the boost pressure port on your boost controller." My what? Ok I see one that goes near the injectors, but I don't know anything about a boost controller... I don't remember ever buying one and I know I don't have a boost gauge.

"The wastegate gets its signal from the nipple on the intercooler piping." I don't know if this is the 'nipple' but I see a small bent pipe coming off the intercooler piping just before the BOV and it has been plugged. "The Apexi boost controller stepping motors go in between the IC piping and the wastegate actuator." 'Wastegate actuator?? WTF is that? 'Boost controller stepping motors'?? Holy crap! I don't know what that is let alone if I have one, but I don't remember buying a boost controller....

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j_rocc2003
Posts: 100
Joined: Sun Feb 04, 2007 5:42 pm
Car: 90 s13 240 w/sr swap

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check it out. im less than 20min away from you. is there ne way you would be able to drive the car to forest lake or something?? i could help you with all ur vacuum issues. no offense but the vacuum system on an sr (to me at least) is kinda easy. Im in st.paul, and im always in flake town. lmk if you want my help. -Josh. (and im saying ur paranoid, but we dont have to meet at your house if want to meet at all).

blinker_fluid
Posts: 303
Joined: Mon Feb 19, 2007 4:21 pm
Car: 1991 Nissan 240SX FB
2000 Nissan Maxima SE

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Heres a link to the factory vaccum diagram.

zerothread?id=305170

Alot of people don't run with most of the stuff in the diagram. You should get your lines installed correctly before you start messing with boost controllers, also you shouldn't use the factory boost solenoid with a boost controller.

My setup has 4 lines. Some people do it different but this is mine and it works fineFrom the throttle body: 1 to the fuel pressure regulator, 1 to the boost gauge, 1 to the BOVFrom a boost source near the turbo(nipple on the cold pipe): 1 line to the wastegate actuator(that thing on your turbo with the rod coming out of it and has a vaccum nipple) it looks like this

once you get everything hooked up then you can start messing with the boost controller. Follow the instructions that came with it.

kingdutka
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Joined: Wed May 02, 2007 8:18 am

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j_rocc2003 wrote:check it out. im less than 20min away from you. is there ne way you would be able to drive the car to forest lake or something?? i could help you with all ur vacuum issues. no offense but the vacuum system on an sr (to me at least) is kinda easy. Im in st.paul, and im always in flake town. lmk if you want my help. -Josh. (and im saying ur paranoid, but we dont have to meet at your house if want to meet at all).
No offense? OFC NOT! :D I am a noob to allof this after all!

I did some google image searches of the SR and learned that my IC nipple has been plugged instead of attached!! OMFG!!

So I am off to the parts store for a hose. I am confident I got the BOV vacuum line attached properly as my symptoms changed dramatically, but is still terrible because of that one hose being blocked off. I am about to go get one and try it out. If I still have troubles, I would LOVE to come meet you and Forest Lake is totally within range of my "bucking bronco" :P. I'll post back later today.

EDIT: For the record, I am not paranoid at all. If you wanna drive all the way to Stacy and find me on these backroads, I'll give you directions. :P

Let's just wait to see if this hose fixes things...

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inkslingers13
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Joined: Tue Dec 04, 2007 5:32 pm
Car: 1985 Corolla Gt-S

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kingdutka wrote:It's alive!!!!! MUAHAHAHAHAHAHAHA!!!! WOOHOOTY!!!

<does a little dance, sings a little song, gets down tonight>

I had to order a clutch hose cuz the idiots at the "pro" shop didn't put one on, so it'll be a couple more days before I can drive her around again, but she is alive!!!!

For those of you with ANY sort of doubt about your electrical system, SEND IT OUT! Have a professional do a wire harness repair. You will be able to rest easy knowing that is not your problem and you will be happy with the results!
Are you kidding???? no clutch??? they put the motor back together without a clutch??? sew this place man! anyways good luck with getting her done!

codyace
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Car: S14 w/redtop
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Did you get your MAF issue sorted out?

Is it a stock MAF or upgraded (Cobra or Z32)

kingdutka
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Joined: Wed May 02, 2007 8:18 am

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Ok, I got some hose and connected the IC nipple to the same spot where I see many other peoples have theirs when I did a google image search for "SR20DET". I also referenced back to the previous guide I followed for hooking up the BOV.

The car now idles rough and blows black smoke (not a ton). Seems like I have the hose hooked up wrong, but IDK!!

I could really use some help in person. I live in Stacy, MN. I'll email directions to anyone willing and I'll hook you up with some food or beer or whatever suits you. :D I would REALLY like someone who has a working 240SX SR20DET and if you could drive that when you come, but if you don't wanna drive it in the snow, that's cool, I understand.

Sooner the better! I'll be up late tonight even!

kingdutka
Posts: 209
Joined: Wed May 02, 2007 8:18 am

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Also wanted to quick point out, I disconnected the MAF wiring. I am using a Z32 MAFS and had to order a replacement wiring plug for it... the one I got has wire colors: White, Green, Brown, Yellow, and there are no instructions.... I don't know how the last guy figured to wire it the way it was, but it seems like the best I can do is guess and try every possible combination.

If I wire it a certain way, could I fry out the MAFS? If that happens, would that cause the black smoke, or is that related to the intake lines?

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IanS
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Car: 2002 Subaru WRX, 2010 Subaru Forester XT, 2004 Infiniti G35 Coupe.
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Hey, If your free this evening, I kind of feel like stretching the legs on my Integra, I may be up for a little road trip if you want, I think I may know whats going on, I just cant really enplane it with a keyboard.

Send me an Email.

[email protected]

kingdutka
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Joined: Wed May 02, 2007 8:18 am

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Thanks for coming over to help me out last night. It was pretty cool learning that I had my BOV and IC nipple connected properly! :D

I guess we can say for 100% now that the MAFS wiring is good to go. We got the pinout on the Z32 maf and got it connected. It no longer reads error code 12 on the ECU. It nows says all clear (55).

You would think with both of these issues taken care of, things would be good to go, but you know, I just can't have that kind of luck. So, wouldn't you know if, my EFFIN CAR WONT START....... AGAIN!!! AAAAARGRGRGRHHHH!!!

Thanks Again for coming out, but I still need help. I need this fixed asap so I can start using it as a daily driver. The other car I have been using is going to my brother really soon, if it lasts that long...

So, what next?

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j_rocc2003
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Joined: Sun Feb 04, 2007 5:42 pm
Car: 90 s13 240 w/sr swap

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[email protected]. that is my email addy. hit me up and i'll swing out this weekend. LMK..... -josh

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IanS
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It should have started, I think we may have gas washed the cylinders last night, it may be time to pull all the spark plugs, let it dry out a little, and add a little oil to help seat the rings. As far as I can tell everything is hooked up correctly, though the BOV should be recirculated, it should still run.

I am free all of Saturday, I have it off. We should all get together, three brains is way better than two, I'm sure we can get that thing crackalaken. I will bring some carb clean and a timing light, Ive got a few more tricks up my sleeve.

kingdutka
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Ok, I did email my address and phone number to Josh. Saturday works for me, I can even get up early (before noon!).

I did wait until the next morning, fresh charge on the battery (it seemed to really get low after you left). I noticed the gas smell was pretty strong this time trying to start it, but I had the garage door closed too. Seems like it's just pumping in way too much fuel.

I wasn't even going to try it today or tomorrow due to the extremely low temps we are having out here (-12 degrees right now and expected to reach -20 over night!! OUCH!)

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Hijacker
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Joined: Wed Aug 13, 2003 4:57 am
Car: '92 240sx Convertible
'94 F-150
Location: Fredericksburg, VA

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Just out of curiosity, is your top still not working? Your "shop" probably didn't know that they had to do some extra wiring to make the top work since convertibles are slightly different than other 240 autos.

kingdutka
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Joined: Wed May 02, 2007 8:18 am

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Ya, my top does not work. I haven't checked, but I would guess my reverse lights don't work either. Do you happen to know which wires I need to hook up, where to find them, and what each one is (+12v, ground, etc) so I can rewire that?

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Hijacker
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Car: '92 240sx Convertible
'94 F-150
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Click the link in my sig that says auto -> manual swap. It's vert specific

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IanS
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Car: 2002 Subaru WRX, 2010 Subaru Forester XT, 2004 Infiniti G35 Coupe.
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Bart to the rescue.

I would say just leave it alone until Saturday, doing to much cranking isn't real good for it.

kingdutka
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Joined: Wed May 02, 2007 8:18 am

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Ok, I got my new MAFS in today (it's from an auto recylcer, so it's used). This one is from a Q45. When I got it, it got me thinking... I am almost certain my ECU was NOT tuned for the Z32 MAFS, so I am gonna go out and install this bad boy right away.

Should I try to start her up then, or continue waiting till Saturday? I'm wanting to start it cuz my temporary car is having issues now....

kingdutka
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I got the thing all wired up and went to attach it only to find that the Q45 MAFS has a slightly larger opening on the end of it so... it doesn't fit! Damn thing is the same size as the hose it is supposed to go inside. I swear, I just can't catch a break! What are the odds I can get a special adapter to shrink my hose by like 1/8"? I don't know what size this one is. but it's big (like 3").

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emailingjpb
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Joined: Tue Aug 28, 2007 6:03 pm
Car: 1993 240sx

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Hey I saw a pic of your s-13 on another post and was curious as to your suspension set-up and wheel/tire size. I am about to purchase lowering springs and new wheels and tiresfor mine. The ride height and wheel/tire size on your is PERFECT, so aside from stroking your ego, I'd like for my setup to look as clean as yours. Thanks!

kingdutka
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Really wanna know? :P

Bone stock suspension! I am running 19" wheels with low-pro tires (don't have the dimension off top of my head tho). I didn't do the "big brake" upgrade (which gives you a 5 lug bolt pattern), mine is FULL stock except the wheels.

A funny thing about the wheels, I spent 2 weeks searching for the perfect pair. They had to be 19", 4 lug pattern in my size (forget, is it the 4x100mm or the 4x4.5"?), they had to resemble Ferrari wheels, and once I satisfied all those requirements: they had to have a center cap that covers the lug nuts! That was the hardest part of all because most wheels that have the appearance I want either don't have a center cap, or the center cap did not cover the lug nuts. I REALLY wanted to cover the lugs nuts. This is because most aftermarket wheels with a 4 lug pattern come in BOTH 4 lug sizes, making it have 8 holes for the wheel bolts. As soon as anyone saw the 8 holes and only 4 being used, they would immediately know it was not a real Ferrari. I am trying to fake out people, so the center cap has to hide the 8 holes.

After 2 weeks, I found a really nice set at a REALLY good price from "Nate's Wheels". (Google them. They have an ebay store)

kingdutka
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Joined: Wed May 02, 2007 8:18 am

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Oh ya, a note on the "ride height":

I am using a custom made body kit which makes the car APPEAR lower to the ground than it is. Once again, I am running BONE STOCK suspension!

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IanS
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So are we game for Saturday or what.

kingdutka
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Yes please! I sent an email to Josh too, hoping he can make it out. Like you said, 3 heads are better than 2.

Should I hit up a hardware store to see if I can find some kind of adapter for this Q45 MAFS? Problem is, my backup car is crapping out on me now....

codyace
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kingdutka wrote:Yes please! I sent an email to Josh too, hoping he can make it out. Like you said, 3 heads are better than 2.

Should I hit up a hardware store to see if I can find some kind of adapter for this Q45 MAFS? Problem is, my backup car is crapping out on me now....
Can you actually get the couplre on your intake over the MAF?

I'd say if it's close just clamp it down to see if it'll run.

Are you sure you even know what ECU you have in the car? Changing MAF's and injectors will not let the car/run ****ty if it's stock....

kingdutka
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Joined: Wed May 02, 2007 8:18 am

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No, it was exact same size wouldn't fit at all. I just got back from hardware store and found an adapter for $4. I'll post in an hour or so after i test it out.

kingdutka
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Joined: Wed May 02, 2007 8:18 am

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Well, it's installed, but still nothing...

I get same thing as when you were over Ian. A couple good coughs and then nothing. I smell fuel pretty good too, so it seems like it's spraying too much. IDK!!

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IanS
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Ive got to bring a friend to the impound lot tomorrow morning to pick up his car, I will give you a call when I get that all squared away.


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