Help PLEASE!! sr20det no spark

For the RWD SR20DET cars! Sponsored by Wiring Specialties.
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240baby
Posts: 10
Joined: Wed Feb 11, 2009 12:07 pm
Car: 1990 Nissan 240sx, 1994 Volvo 850

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I need some help guys please!!! I am in the middle of an sr20det s13 swap into a 1990 s13 and I'm having some trouble, my problem is I am getting no spark, so I checked to see if I was getting fuel I am, so I checked the ignitor chip to see if it was getting power, it was, I am currently out of ideas I'll take any advice you have to give, PLEASE!!!


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240life
Posts: 1313
Joined: Mon Sep 24, 2007 6:02 am
Car: 1993 Nissan 240SX S13 Coupe SR20DET blacktop
Location: ME
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check and see if your coils are seeing battery voltage, also check that all grounds from engine to chassis are connected, if that fails check for continuity in your coil harness as it is not unusual for the ground wire to the coils to corode or be damaged (pinched) durring install

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J240sx
Posts: 437
Joined: Fri May 12, 2006 7:03 pm
Car: 89 240sx

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Check the ground that comes off of the coil pack harness.. and make sure the harness is also plugged into the rest of the harness. Stupid yes, but it happens.

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240baby
Posts: 10
Joined: Wed Feb 11, 2009 12:07 pm
Car: 1990 Nissan 240sx, 1994 Volvo 850

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ok so I was checking the ground on the back of the head when I noticed the wire bundle that the coils are on got pinched during installation and some of the wires were exposed, so I'm going to fix that and see if that fixes my problem!

V8slayr
Posts: 104
Joined: Wed Feb 04, 2009 1:21 pm
Car: 97 240sx

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Also make sure you are getting a signal from the Cam Angle Sensor, if the CAS is bad it will keep you from getting spark

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240baby
Posts: 10
Joined: Wed Feb 11, 2009 12:07 pm
Car: 1990 Nissan 240sx, 1994 Volvo 850

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how would I go about checking the CAS?

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240baby
Posts: 10
Joined: Wed Feb 11, 2009 12:07 pm
Car: 1990 Nissan 240sx, 1994 Volvo 850

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ok so I checked the voltage on my CAS and it was getting power so I am again at a loss

mauri s13
Posts: 10
Joined: Fri Jun 05, 2009 8:17 am
Car: 240sx silvia s13

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hey check your ecu.. someting similiar happened to my sr. but the only thing is that i was getting no spark and the fuelpump was not turning on.. and it was the ecu. it was a burnt circuit.. open your ecu and you will see really fast if it is a burnt circuit.

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240baby
Posts: 10
Joined: Wed Feb 11, 2009 12:07 pm
Car: 1990 Nissan 240sx, 1994 Volvo 850

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I cracked open my ECU and looked at it and it looked brand freakin new, I even had one of my friends who knows about computers look at it and he said the same thing

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240baby
Posts: 10
Joined: Wed Feb 11, 2009 12:07 pm
Car: 1990 Nissan 240sx, 1994 Volvo 850

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I was checking my grounds for the 12,342,335,423 time and noticed that the harness the coil packs are on was exposed in the back, so I checked it out and noticed that some of the wires were still damaged from when I was putting the motor in, they weren't completely cut but there were only a few strands still together.. should I try and fix it or just buy a new one???

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GoTRicEo0
Posts: 203
Joined: Sun Feb 26, 2006 4:24 am
Car: Slowest crap the earth have ever seen.
Location: Fairfield California
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Fix it.. solder/heatstrink/electrical tape it. Super overkill lol. Then again.. time is money.

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240baby
Posts: 10
Joined: Wed Feb 11, 2009 12:07 pm
Car: 1990 Nissan 240sx, 1994 Volvo 850

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ok so I got it to run but now it wont idle i also have no exhaust just turbo then dump pipe could it be no back pressure?

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DETonatros
Posts: 15
Joined: Fri Oct 03, 2008 2:31 pm
Car: 92, 240sx SR20DET

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check your mafs it could be in limp mode, your wastegate should give it enough back pressure


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