rb25 ran fine, randomly quit starting. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

GeneralTso · 09-16-2010, 09:56 PM

well my friend traded a car a while back for this rb25 swapped hatch. the car has ran fine and great for a month and it started acting wierd when starting a few days ago. we've checked all the grounds and replaced relays, made sure the fuel pumps priming, changed plugs, made sure it has spark & fuel, and we jus't cant figure out whats wrong with it. i'd appreciate any help. we don't have a shop within like 4 hours of us that fucks with imports so any help's appreciated.

DeeJay1337 · 09-16-2010, 10:03 PM

Check the the fuses. Well you said you checked the relays...
check the EGR.

silviaSGP06 · 09-16-2010, 10:32 PM

when you lengthened the MAF harness did you use shielded wire? The MAF harness can be very pick when it comes to EM interference.

Also could be the "rich/retard" feature on the crappy stock ECU

Rabboni · 09-16-2010, 10:32 PM

It is probably your flux capacitor; when that goes out the car will definitely act weird. Not strange though, only weird... We are gonna need a more specific description than "acting weird."

Rabboni · 09-16-2010, 10:35 PM

AHH, double post

silviaSGP06 · 09-16-2010, 10:39 PM

sorry didn't address the non start issue.

Yeah need more details but "acting weird" is actually almost enough info on the RB25.

Sometimes my RB would not start if the MAF was not connected, so check your wiring as mentioned above. Also A failed ecu was the cause to one of my non start issues.

GeneralTso · 09-16-2010, 10:59 PM

well by acting wierd i meant the car would and wouldn't start. it just went back and forth. my friend changed the plugs and it fired right up the first time it happened but now it didn't make a difference. now it just cranks with no start. we unplugged the maf to see if it would start at all but didn't make a difference. and its definitely plugged in. and we read about people saying the ecu's going out but he wanted to make sure it wasn't anything else before he spent about 150 on an ecu.

09-16-2010, 09:56 PM	#1
GeneralTso Leaky Injector Join Date: Jul 2010 Location: Proctorville,Ohio Age: 36 Posts: 61 Trader Rating: (0) Feedback Score: 0 reviews	rb25 ran fine, randomly quit starting. well my friend traded a car a while back for this rb25 swapped hatch. the car has ran fine and great for a month and it started acting wierd when starting a few days ago. we've checked all the grounds and replaced relays, made sure the fuel pumps priming, changed plugs, made sure it has spark & fuel, and we jus't cant figure out whats wrong with it. i'd appreciate any help. we don't have a shop within like 4 hours of us that fucks with imports so any help's appreciated.

09-16-2010, 10:03 PM	#2
DeeJay1337 Zilvia Member Join Date: Mar 2008 Location: Nor Cal Posts: 221 Trader Rating: (5) Feedback Score: 5 reviews	Check the the fuses. Well you said you checked the relays... check the EGR. __________________ A TINT AND DEBADGE IS NOT A FUCKING MOD!

09-16-2010, 10:32 PM	#4
Rabboni Zilvia Member Join Date: Aug 2009 Location: Fairfield, CA Posts: 230 Trader Rating: (0) Feedback Score: 0 reviews	It is probably your flux capacitor; when that goes out the car will definitely act weird. Not strange though, only weird... We are gonna need a more specific description than "acting weird." __________________ Baling Wire-The Duct Tape Of Champions

09-16-2010, 10:35 PM	#5
Rabboni Zilvia Member Join Date: Aug 2009 Location: Fairfield, CA Posts: 230 Trader Rating: (0) Feedback Score: 0 reviews	AHH, double post __________________ Baling Wire-The Duct Tape Of Champions Last edited by Rabboni; 09-16-2010 at 10:37 PM.. Reason: double post

09-16-2010, 10:32 PM	#3
silviaSGP06 Leaky Injector Join Date: Dec 2006 Location: grand prairie Age: 37 Posts: 59 Trader Rating: (0) Feedback Score: 0 reviews	when you lengthened the MAF harness did you use shielded wire? The MAF harness can be very pick when it comes to EM interference. Also could be the "rich/retard" feature on the crappy stock ECU

09-16-2010, 10:39 PM	#6
silviaSGP06 Leaky Injector Join Date: Dec 2006 Location: grand prairie Age: 37 Posts: 59 Trader Rating: (0) Feedback Score: 0 reviews	sorry didn't address the non start issue. Yeah need more details but "acting weird" is actually almost enough info on the RB25. Sometimes my RB would not start if the MAF was not connected, so check your wiring as mentioned above. Also A failed ecu was the cause to one of my non start issues.

09-16-2010, 10:59 PM	#7
GeneralTso Leaky Injector Join Date: Jul 2010 Location: Proctorville,Ohio Age: 36 Posts: 61 Trader Rating: (0) Feedback Score: 0 reviews	well by acting wierd i meant the car would and wouldn't start. it just went back and forth. my friend changed the plugs and it fired right up the first time it happened but now it didn't make a difference. now it just cranks with no start. we unplugged the maf to see if it would start at all but didn't make a difference. and its definitely plugged in. and we read about people saying the ecu's going out but he wanted to make sure it wasn't anything else before he spent about 150 on an ecu.