Weird Sr20 Ignition Problem - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

rednerd · 08-06-2003, 09:23 PM

My Sr20det project has yet to run

I get spark on cylinder #1 and that is it. The computer doesn't fire the other plugs (no signal to the ignitor).

The ignitor is good, all four coils are good, and the computer doesn't pull a code for a bad cam sensor. I have checked the cam sensor and it looks good, though I don't have a scope to see the exact wave form that it is putting out.

Can anyone tell me if they have seen this problem before. Bad ecu?!$$$$$

Thanks,
Jon

PS - The computer pull codes 55 (computer okay) and 21 (coils not firing).

Fibercus · 08-07-2003, 01:17 AM

I thought code 55 = Consult (hook up)

fast-datsun · 08-08-2003, 05:58 PM

What is the large number on the computer 62--63---or 60 ????
60 is a NA computer
63 is DET automatic
62 is DET 5spd...

Mack

rednerd · 08-08-2003, 06:53 PM

It is a 62.

BTW - Only the number one fuel injecter is firing as well.

I did check the cam sensor according to the procedure in the nissan service manual with a digital multimer and both the triggers are putting out voltage between .1 and 5 volts.

I picked up an extra ecu off ebay, so I'm going to take another stab at getting it going tomorrow.

If it doesn't work I'm going to take the cam sensor off the car and put it on an o-scope to see what kind of curve it is putting out.

Jon

rednerd · 08-09-2003, 10:02 AM

It RUNS!!!!!! It looks like it was the ecu. :-)

Jon

08-06-2003, 09:23 PM	#1
rednerd Zilvia Member Join Date: Aug 2003 Location: Massachusetts Posts: 180 Trader Rating: (0) Feedback Score: 0 reviews	Weird Sr20 Ignition Problem My Sr20det project has yet to run I get spark on cylinder #1 and that is it. The computer doesn't fire the other plugs (no signal to the ignitor). The ignitor is good, all four coils are good, and the computer doesn't pull a code for a bad cam sensor. I have checked the cam sensor and it looks good, though I don't have a scope to see the exact wave form that it is putting out. Can anyone tell me if they have seen this problem before. Bad ecu?!$$$$$ Thanks, Jon PS - The computer pull codes 55 (computer okay) and 21 (coils not firing).

08-07-2003, 01:17 AM	#2
Fibercus BANNED Join Date: Jul 2001 Location: Canyon Country, CA Age: 44 Posts: 714 Trader Rating: (0) Feedback Score: 0 reviews	I thought code 55 = Consult (hook up)

08-08-2003, 05:58 PM	#3
fast-datsun Leaky Injector Join Date: Aug 2002 Posts: 116 Trader Rating: (0) Feedback Score: 0 reviews	What is the large number on the computer 62--63---or 60 ???? 60 is a NA computer 63 is DET automatic 62 is DET 5spd... Mack

08-08-2003, 06:53 PM	#4
rednerd Zilvia Member Join Date: Aug 2003 Location: Massachusetts Posts: 180 Trader Rating: (0) Feedback Score: 0 reviews	It is a 62. BTW - Only the number one fuel injecter is firing as well. I did check the cam sensor according to the procedure in the nissan service manual with a digital multimer and both the triggers are putting out voltage between .1 and 5 volts. I picked up an extra ecu off ebay, so I'm going to take another stab at getting it going tomorrow. If it doesn't work I'm going to take the cam sensor off the car and put it on an o-scope to see what kind of curve it is putting out. Jon

08-09-2003, 10:02 AM	#5
rednerd Zilvia Member Join Date: Aug 2003 Location: Massachusetts Posts: 180 Trader Rating: (0) Feedback Score: 0 reviews	It RUNS!!!!!! It looks like it was the ecu. :-) Jon