Car wont start/idle Redtop SR - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

92dagrey · 02-19-2011, 10:30 AM

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 · 02-19-2011, 03:50 PM

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 · 02-19-2011, 09:09 PM

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 · 02-23-2011, 05:41 PM

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

sr20comic · 03-23-2011, 10:23 PM

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 · 03-24-2011, 01:25 AM

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

sr20comic · 03-24-2011, 09:25 AM

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

Catch240 · 03-24-2011, 09:33 AM

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

sr20comic · 03-24-2011, 09:40 AM

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

bb4_96 · 03-24-2011, 10:47 AM

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 · 03-24-2011, 04:43 PM

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

JuMPiiN · 03-24-2011, 04:49 PM

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.

03-24-2011, 01:25 AM	#36
KiLLeR2001 Post Whore! Join Date: Jun 2007 Location: オーランドフロリダ Posts: 7,955 Trader Rating: (46) Feedback Score: 46 reviews	Lets start with the basics. Whats your compression on all 4 cylinders? __________________

03-24-2011, 04:43 PM	#41
Rusker Zilvia Junkie Join Date: Feb 2004 Location: Washington Posts: 351 Trader Rating: (0) Feedback Score: 0 reviews	Are you absolutely, 100% sure the CAS is timed properly? __________________ 1990 S13/SR20

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02-19-2011, 10:30 AM	#31
92dagrey Join Date: Feb 2011 Location: Harrisburg, PA Age: 32 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	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)

02-19-2011, 03:50 PM	#32
JuMPiiN Zilvia Junkie Join Date: Sep 2010 Location: Bossier City, LA Age: 30 Posts: 393 Trader Rating: (4) Feedback Score: 4 reviews	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

02-19-2011, 09:09 PM	#33
JuMPiiN Zilvia Junkie Join Date: Sep 2010 Location: Bossier City, LA Age: 30 Posts: 393 Trader Rating: (4) Feedback Score: 4 reviews	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.

02-23-2011, 05:41 PM	#34
JuMPiiN Zilvia Junkie Join Date: Sep 2010 Location: Bossier City, LA Age: 30 Posts: 393 Trader Rating: (4) Feedback Score: 4 reviews	No go on the new ecu, so with that said anyone local want to help me out?

03-23-2011, 10:23 PM	#35
sr20comic Leaky Injector Join Date: Feb 2011 Location: ridgecrest Age: 31 Posts: 147 Trader Rating: (6) Feedback Score: 6 reviews	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?

03-24-2011, 09:25 AM	#37
sr20comic Leaky Injector Join Date: Feb 2011 Location: ridgecrest Age: 31 Posts: 147 Trader Rating: (6) Feedback Score: 6 reviews	I'm not sure exactly what mine is but I had it checked when I got it and it was good

03-24-2011, 09:33 AM	#38
Catch240 Zilvia Member Join Date: Dec 2006 Location: Delray Beach, FL Age: 35 Posts: 186 Trader Rating: (5) Feedback Score: 5 reviews	does the car run without the safc plugged in an die when you hit the throttle or just die?

03-24-2011, 09:40 AM	#39
sr20comic Leaky Injector Join Date: Feb 2011 Location: ridgecrest Age: 31 Posts: 147 Trader Rating: (6) Feedback Score: 6 reviews	Mine doesn't have the safc, all it does is crank, doesn't even try to turn over

03-24-2011, 10:47 AM	#40
bb4_96 Zilvia Addict Join Date: Jan 2006 Location: Under my car Posts: 785 Trader Rating: (4) Feedback Score: 4 reviews	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?

03-24-2011, 04:49 PM	#42
JuMPiiN Zilvia Junkie Join Date: Sep 2010 Location: Bossier City, LA Age: 30 Posts: 393 Trader Rating: (4) Feedback Score: 4 reviews	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.