Missing and Stalling at idle.I've Spent 2,000$+trying to fix. Its Cursed HELP! - Page 3 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Nutter_SR20DET · 10-07-2009, 11:15 AM

"I had a similar issue once, My ECU came unbolted from the chassis and it ran rich and misfired. I replaced the plugs No change, but as soon as i grounded the ECU back to the chassis it ran fine again."

my blacktop is running like shit, I have the ecu just standing up, does that make a difference???? should it be bolted up to the chassis?

Nutter_SR20DET · 10-07-2009, 12:00 PM

Im in the same boat. I began my swap july of '08 and still is not running right. ive prolly spent close to $3000 on parts i thought were bad. in my case it seems like an ignition problem. maybe yall can help.

PROBLEMS I KNOW OF:

headers are not tight ( broken studs)
ECU is code J4, not bolted to chassis
MAFS is not soldered just jerry rigged
o2 sensor not hooked up cuz i havent figured out which wire is which
only no.1 pipe gets hot, 2, gets warm,3and 4 are cold on header
exhaust is cat back, gutted cat, but not hooked up past turbo elbow
ect..ect... bottom line i dont have the time to work on it like i used to so im stuck just getting ideas for now.
to me the car sounds like its got a wrong fire order. all coils are getting spark.
I pulled the plugs and results are as follows:
No.1: Charred, carbon build-up
No.2: soaked with fuel, still brand new
No.3: a lil carbonized, just barely
No.4: soaked with fuel.

my oil smells like fuel, the car is really rich
fires up immediatly when u try to start it
give it throttle real boggy cant reach 5k

so go head and flame away, my neighbor said he was a mechanic and would help with the swap, but in the middle of swappin it he moved away so im stuck now with no mechanic skills, i just drive. but after all that i mentioned is good 2 go i feel like its still going to run like shit

TheWayItGoes909 · 02-08-2010, 03:45 PM

SOoo did you ever fix the problem? was it the PFC map?

10-07-2009, 11:15 AM	#1
Nutter_SR20DET Join Date: Sep 2009 Location: Georgia Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	"I had a similar issue once, My ECU came unbolted from the chassis and it ran rich and misfired. I replaced the plugs No change, but as soon as i grounded the ECU back to the chassis it ran fine again." my blacktop is running like shit, I have the ecu just standing up, does that make a difference???? should it be bolted up to the chassis?

10-07-2009, 12:00 PM	#2
Nutter_SR20DET Join Date: Sep 2009 Location: Georgia Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	Im in the same boat. I began my swap july of '08 and still is not running right. ive prolly spent close to $3000 on parts i thought were bad. in my case it seems like an ignition problem. maybe yall can help. PROBLEMS I KNOW OF: headers are not tight ( broken studs) ECU is code J4, not bolted to chassis MAFS is not soldered just jerry rigged o2 sensor not hooked up cuz i havent figured out which wire is which only no.1 pipe gets hot, 2, gets warm,3and 4 are cold on header exhaust is cat back, gutted cat, but not hooked up past turbo elbow ect..ect... bottom line i dont have the time to work on it like i used to so im stuck just getting ideas for now. to me the car sounds like its got a wrong fire order. all coils are getting spark. I pulled the plugs and results are as follows: No.1: Charred, carbon build-up No.2: soaked with fuel, still brand new No.3: a lil carbonized, just barely No.4: soaked with fuel. my oil smells like fuel, the car is really rich fires up immediatly when u try to start it give it throttle real boggy cant reach 5k so go head and flame away, my neighbor said he was a mechanic and would help with the swap, but in the middle of swappin it he moved away so im stuck now with no mechanic skills, i just drive. but after all that i mentioned is good 2 go i feel like its still going to run like shit

02-08-2010, 03:45 PM	#3
TheWayItGoes909 Zilvia Junkie Join Date: Sep 2008 Location: Inland Empire Posts: 382 Trader Rating: (10) Feedback Score: 10 reviews	SOoo did you ever fix the problem? was it the PFC map?