hi, I just bought an ecu for an s15 sr20det, i tested it on my friends car. His car has a QT ecu which works fine. I hooked up my NQ ecu to the same car and it would not start. The car cranks and the fuel pump turns on. I was told this ecu was from a turbo car, the numbers are NQ 23710 91F08. What can i do to verify the identity of this ecu and make it work.
thanks steve
QT Ecu
NQ Ecu
Modified by Madngineer at 6:02 AM 6/8/2009
S15 Nq Ecu Not Starting an S15 sr car wired up for a Qt ecu, why?
-
Madngineer
- Posts: 54
- Joined: Mon Mar 02, 2009 4:37 pm
- Car: s14's 95 w/rb25det 97 w/sr20det
-
slidestyle69
- Posts: 500
- Joined: Fri Mar 27, 2009 6:11 am
- Car: 92 s13
- Location: Alabama
Re: S15 Nq Ecu Not Starting an S15 sr car wired up for a Qt ... (Madngineer)
what is qt and nq?
-
Madngineer
- Posts: 54
- Joined: Mon Mar 02, 2009 4:37 pm
- Car: s14's 95 w/rb25det 97 w/sr20det
Re: S15 Nq Ecu Not Starting an S15 sr car wired up for a Qt ... (slidestyle69)
lol..............thats what my question is.slidestyle69 wrote:what is qt and nq?
-
slidestyle69
- Posts: 500
- Joined: Fri Mar 27, 2009 6:11 am
- Car: 92 s13
- Location: Alabama
Re: S15 Nq Ecu Not Starting an S15 sr car wired up for a Qt ... (Madngineer)
lol are these s15 ecu's or ecu's from another motor?
-
Madngineer
- Posts: 54
- Joined: Mon Mar 02, 2009 4:37 pm
- Car: s14's 95 w/rb25det 97 w/sr20det
Re: S15 Nq Ecu Not Starting an S15 sr car wired up for a Qt ... (slidestyle69)
they are both s15 ecu's. The Qt runs an s15 turbo engine. The Nq turns the fuel pump on and turns over the engine, but doesn't run it.slidestyle69 wrote:lol are these s15 ecu's or ecu's from another motor?
-
slidestyle69
- Posts: 500
- Joined: Fri Mar 27, 2009 6:11 am
- Car: 92 s13
- Location: Alabama
Re: (jr_ss)
thats true, good point. it seems just like when u plug a ka computer up to a sr the fp primes and turns the motor over but wont fire it off.
I was reading back on a couple things you said, the qt ecu wont start the car or have u jus tried the nq.
I was reading back on a couple things you said, the qt ecu wont start the car or have u jus tried the nq.
-
Madngineer
- Posts: 54
- Joined: Mon Mar 02, 2009 4:37 pm
- Car: s14's 95 w/rb25det 97 w/sr20det
Re: (slidestyle69)
the qt will start the car the nq will notslidestyle69 wrote:thats true, good point. it seems just like when u plug a ka computer up to a sr the fp primes and turns the motor over but wont fire it off.
I was reading back on a couple things you said, the qt ecu wont start the car or have u jus tried the nq.
-
Madngineer
- Posts: 54
- Joined: Mon Mar 02, 2009 4:37 pm
- Car: s14's 95 w/rb25det 97 w/sr20det
Re: (jr_ss)
i just bought another NQ ecu and it runs the sr fine, i guess it was just a bad ecujr_ss wrote:The NQ is most likely an SR20DE ECU, meaning it won't run your car because there are different I/O's from the SR20DET.
-
Madngineer
- Posts: 54
- Joined: Mon Mar 02, 2009 4:37 pm
- Car: s14's 95 w/rb25det 97 w/sr20det
Re: (jr_ss)
ok, thanksjr_ss wrote:You can plug any ECU in to the harness and have the same thing. The starting/charging system are on a completely different circuit then the ECCS...
You can crank a car over all day with the ECU disconnected...