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View Full Version : HELP sohc to dohc mod gone wrong!!

painengaged
07-02-2009, 07:13 PM
i did the sohc to dohc mod Converting Your SOHC Tach to Read DOHC Signal: 240sx Articles: Nissan Forums / Infiniti Forums - NICOclub (http://forums.nicoclub.com/zerothread/272023) and my car started for 2 seconds but was runnin like crap. i tried to start it again and heard a pop almost sounded like it was coming from the ecu. now my car doesnt start, i didnt have the time to pull the plugs and check if it was gettin spark and fuel, but i checked all the fues that i thought it would be from and they all looked good.
dubtastic
07-03-2009, 04:01 PM
cam/crank sensor good?
painengaged
07-05-2009, 12:25 PM
ya the sensor is good i forgot to cut the wire that ran back to the ecu. so i think my ecu is blown. is there away to test it?
GroundPerformance
07-05-2009, 12:48 PM
I would check the ECU for a short possible wiring issue. If I were you I'd just look for a DOHC cluster and just take off the Tach it's only held by 3 screws and keep your SOHC cluster so you keep your exact odometer.
GroundPerformance
07-05-2009, 12:52 PM
ya the sensor is good i forgot to cut the wire that ran back to the ecu. so i think my ecu is blown. is there away to test it?
Turn your key to IGN ON and turn the knob on the ECU counter clockwise for a second and turn it back. It should give you some codes. If no light at all then chances are its blown. GL!
DCP94
07-06-2009, 11:30 AM
Damn that's sucks!
DALAZ_68
07-06-2009, 11:52 AM
i would say double check the 75A, that loud pop sounds like that fuse...atleast for me...and double check everything else... SOHC Ecu's are hard to come by
S-Nation S13
07-06-2009, 12:05 PM
check alt. fuse
check all your fuses underneath the dash
IF ANYTHING I HAVE A DOCH FOR SALE SO LEMME KNOW

http://zilvia.net/f/sale-items/265230-s13-guage-cluster-oem-guages.html (http://zilvia.net/f/sale-items/265230-s13-guage-cluster-oem-guages.html)
painengaged
07-09-2009, 03:11 PM
took my ecu to a buddy to test out and it was dead. so thanks for all your help. ordering my new ecu ina few days. come to find out the ecu was for an auto trans not a five speed like the company told me.
painengaged
07-15-2009, 02:53 PM
it took me three years to get my car running rite and fifteen min to brake it:Owned:
basicmods
07-15-2009, 03:38 PM
took my ecu to a buddy to test out and it was dead. so thanks for all your help. ordering my new ecu ina few days. come to find out the ecu was for an auto trans not a five speed like the company told me.

I know on the s13 DOHC engines the ecu doesn't matter if it's manual or auto, and if anything the auto is actually a bit better as it has a leaner base fuel map (better mileage, more power). Doesn't throw any codes either. I don't know if it's the same with the SOHC