Oil pressure gauge burn out ecu on redtop sr20? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

tommy94gt · 10-12-2007, 08:05 PM

I had to move around some stuff in my center console which included taking out an oil pressure gauge. The wires were all yellow so I put different color tapes on them but I lost the notebook where I wrote down whats what and long story short my first guess was wrong... I coulda sworn I smellt a burnt smell inside the car when I cranked it... Keeps cranking but wont start. Pulled out one of the spark plugs, no spark. I open up the ecu its burnt. Now I just got a loner ecu that works supposedly but will dump a lot of fuel I tried that ... nothing. So I go ahead and buy an ecu off of ebay that the guy listed for a 5 speed with a pic of a #62 ecu he sends me a 63. I read somewhere that #62 is 5 speed and #63 is auto. Question number 1 is can I use code #63 in my car? What effect will it have?
Question 2 is, i have tried 3 different ecus and the car still keeps cranking, doesnt start. Anyone have any ideas what else it could be? I think Im getting fuel cuz I let my friend smell the exhaust as I was cranking it and he says he smells a hint of guess back there... Thank you in advance!

johngriff · 10-12-2007, 08:09 PM

WOW.

I think you probably burnt all three ecu's.

Time to take it to a SHOP, someone wired your gauges in on your EFI harness. Because they are Rocket Scientist, and only Rocket Scientist do that kind of stuff.

With the 63 you got hooked up son, you have no speed limiter, but then again you probably burnt it.

If you are NOT GOOD WITH ELECTRICAL TAKE IT TO A SHOP, this probably could have been fixed for $200 even at the most expensive shop the first time, now your probably $400 -$600 in the hole in parts.

If you WANT TO TEST THE INJECTOR PULSE. Buy a 12v LED from Radio Shack, unplug the harness connector form the injector, stick the LED into the fuel injector harness clip (on the pins), and crank.

NO LED LIGHT UP = NO FUEL SIGNAL FROM THE ECU.

The LED is like .99c so, get it.

statik · 10-12-2007, 10:29 PM

It really sounds like you have very little experience wiring, as john said, take it to someone who knows what they are doing.

tommy94gt · 10-12-2007, 11:03 PM

Oh absolutely, I have no electrical knowledge whatsoever, but my friend is supposed to be a mechanic... I just checked the other ecus and they seem to be fine, no smell, checked the same spots and they are fine. Thanks!

10-12-2007, 08:05 PM	#1
tommy94gt Join Date: May 2007 Location: queens Posts: 39 Trader Rating: (0) Feedback Score: 0 reviews	Oil pressure gauge burn out ecu on redtop sr20? I had to move around some stuff in my center console which included taking out an oil pressure gauge. The wires were all yellow so I put different color tapes on them but I lost the notebook where I wrote down whats what and long story short my first guess was wrong... I coulda sworn I smellt a burnt smell inside the car when I cranked it... Keeps cranking but wont start. Pulled out one of the spark plugs, no spark. I open up the ecu its burnt. Now I just got a loner ecu that works supposedly but will dump a lot of fuel I tried that ... nothing. So I go ahead and buy an ecu off of ebay that the guy listed for a 5 speed with a pic of a #62 ecu he sends me a 63. I read somewhere that #62 is 5 speed and #63 is auto. Question number 1 is can I use code #63 in my car? What effect will it have? Question 2 is, i have tried 3 different ecus and the car still keeps cranking, doesnt start. Anyone have any ideas what else it could be? I think Im getting fuel cuz I let my friend smell the exhaust as I was cranking it and he says he smells a hint of guess back there... Thank you in advance!

10-12-2007, 08:09 PM	#2
johngriff Post Whore! Join Date: Jun 2004 Location: Long Beach, CA Posts: 4,103 Trader Rating: (4) Rides Gallery: johngriff Feedback Score: 4 reviews	WOW. I think you probably burnt all three ecu's. Time to take it to a SHOP, someone wired your gauges in on your EFI harness. Because they are Rocket Scientist, and only Rocket Scientist do that kind of stuff. With the 63 you got hooked up son, you have no speed limiter, but then again you probably burnt it. If you are NOT GOOD WITH ELECTRICAL TAKE IT TO A SHOP, this probably could have been fixed for $200 even at the most expensive shop the first time, now your probably $400 -$600 in the hole in parts. If you WANT TO TEST THE INJECTOR PULSE. Buy a 12v LED from Radio Shack, unplug the harness connector form the injector, stick the LED into the fuel injector harness clip (on the pins), and crank. NO LED LIGHT UP = NO FUEL SIGNAL FROM THE ECU. The LED is like .99c so, get it. __________________ [email protected]

10-12-2007, 10:29 PM	#3
statik Zilvia FREAK! Join Date: Oct 2003 Location: Long Island, NY Age: 40 Posts: 1,358 Trader Rating: (0) Rides Gallery: statik Feedback Score: 0 reviews	It really sounds like you have very little experience wiring, as john said, take it to someone who knows what they are doing. __________________ 97 240sx esaarr \| Current Status: SOLD

10-12-2007, 11:03 PM	#4
tommy94gt Join Date: May 2007 Location: queens Posts: 39 Trader Rating: (0) Feedback Score: 0 reviews	Oh absolutely, I have no electrical knowledge whatsoever, but my friend is supposed to be a mechanic... I just checked the other ecus and they seem to be fine, no smell, checked the same spots and they are fine. Thanks!