Reverse Started...Help - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

s13_kcut · 01-05-2015, 03:30 PM

Ya ya, Reverse started with wrong jumper cables on the wrong polarity and now my SR and now it will not turn over. Blew 75 amp ALT fuse. Replaced that and still not turning over. I can hear fuel pump turn on. Ran ECU diagnostics and it gave me fault code 21 - Ignition Signal and 34 - Knock Sensor. I did not have an analog multimeter to check igniter chip but with digital none of the pins had continuity. I will be heading to where the car is stored this week and wanted have a better plan of attack and better utilize diagnosing this eff up. Any help or advise would be much appreciated.

Thank you,

KC

s13_kcut · 01-08-2015, 07:22 PM

Up...Up...anyone?

Chaluska · 01-08-2015, 09:27 PM

yeah your fucked.

time for a new ECU, and probably a ton of fuses. wiring harness might be ok still.

s13_kcut · 01-13-2015, 03:21 PM

Quote:

Originally Posted by Chaluska

yeah your fucked.

time for a new ECU, and probably a ton of fuses. wiring harness might be ok still.

I'm aware of that part...Checked continuity on all fuses. None blew. Only 75 A alternator. All interior lights work. Starter turns motor. Would ECU be blown if it is still giving me those 2 fault codes when put in diagnostic mode? Igniter fried? No continuity on any pin combination. But I was using a digital multi meter. Don't have analog multi meter to check yet. Hoping this has happened to someone who can share their findings.

Thanks in advance

Gar9854 · 01-13-2015, 03:41 PM

Chase the signal to the solenoid. If theres no fire try to jump it and see if itll run

stunnaben · 01-13-2015, 03:44 PM

Quote:

Originally Posted by s13_kcut

I'm aware of that part...Checked continuity on all fuses. None blew. Only 75 A alternator. All interior lights work. Starter turns motor. Would ECU be blown if it is still giving me those 2 fault codes when put in diagnostic mode? Igniter fried? No continuity on any pin combination. But I was using a digital multi meter. Don't have analog multi meter to check yet. Hoping this has happened to someone who can share their findings.

Thanks in advance

Odds are you're looking at something fried in the ECU..... I've seen this happen before on other vehicles.... Women and jumper cables...

Mike_A31 · 01-20-2015, 10:45 AM

happened to me getting a jump at Wal-Mart. Changed the igniter chip and main fuse and worked again no other issues.

rellik27 · 01-20-2015, 11:33 AM

Igniter most likely, check if your getting spark at the spark plugs.

s13_kcut · 01-21-2015, 12:13 PM

Quote:

Originally Posted by Mike_A31

happened to me getting a jump at Wal-Mart. Changed the igniter chip and main fuse and worked again no other issues.

Sounds good, just need to find a good igniter now.

Thank you

01-05-2015, 03:30 PM	#1
s13_kcut Join Date: Jul 2010 Location: Oregon Age: 40 Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	Jump started reverse polarity...Help Ya ya, Reverse started with wrong jumper cables on the wrong polarity and now my SR and now it will not turn over. Blew 75 amp ALT fuse. Replaced that and still not turning over. I can hear fuel pump turn on. Ran ECU diagnostics and it gave me fault code 21 - Ignition Signal and 34 - Knock Sensor. I did not have an analog multimeter to check igniter chip but with digital none of the pins had continuity. I will be heading to where the car is stored this week and wanted have a better plan of attack and better utilize diagnosing this eff up. Any help or advise would be much appreciated. Thank you, KC Last edited by s13_kcut; 01-08-2015 at 10:29 AM.. Reason: details

01-08-2015, 09:27 PM	#3
Chaluska Zilvia Addict Join Date: May 2008 Location: Missouri City, TX Age: 41 Posts: 997 Trader Rating: (2) Feedback Score: 2 reviews	yeah your fucked. time for a new ECU, and probably a ton of fuses. wiring harness might be ok still. __________________

01-08-2015, 07:22 PM	#2
s13_kcut Join Date: Jul 2010 Location: Oregon Age: 40 Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	Up...Up...anyone?

01-13-2015, 03:41 PM	#5
Gar9854 Zilvia Member Join Date: Oct 2011 Location: Atlanta Posts: 172 Trader Rating: (0) Feedback Score: 0 reviews	Chase the signal to the solenoid. If theres no fire try to jump it and see if itll run

01-20-2015, 10:45 AM	#7
Mike_A31 Join Date: Oct 2013 Location: Idaho Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	happened to me getting a jump at Wal-Mart. Changed the igniter chip and main fuse and worked again no other issues.

01-20-2015, 11:33 AM	#8
rellik27 Zilvia Member Join Date: Jul 2008 Location: the bottom Posts: 256 Trader Rating: (4) Feedback Score: 4 reviews	Igniter most likely, check if your getting spark at the spark plugs.