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medford turbo addict
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841 Posts
Discussion Starter #1
hey guys some of u guys who know my cuz with the red 240sx with the sr well some of u know he got a new one and did another swap well hes having trouble so if anyone has any info we would love it here is his problem....


Are you guys able to please help me? I need to get this car to run this weekend so I can get to work monday. I am an idiot for using this car as my daily cause i cannot afford insurance for multiple cars, and I didnt want to purchase another vehicle.l
Here is the best layout of what I have and what I have checked, can somone please help me with this
-I have swapped a blacktop into a 91 hatch

-I am working with a full uncut harness

-I am running an E6 ecu

-I have wired it up EXACTLY how HT said to do it on their website.

-I have converted it to Manual, I jumpered that 2 wire switch to get the car to crank, and I removed the green Ignition Capture box for the ignition key soleniod.

- I am using the SR tranny harness and I spliced it in with the plug on the fuse box by matching up the colors. All except the neutral and the backup light wires are connected.

-Coilpacks work cause I tested them all on the number 1 Harness Plug and they sparked.

-The only coil harness plug that sparks any coilpack is the no. 1 cylinder

-The other three will not spark any good coilpack

-Connected all grounds that seem obvious, such as the batter tray to the battery and the intake manifold, and the 2 in the back of the cylinder head (one to the firewall and one for the coilpacks), and the 2 from the injector harness that bolt onto the intake manifold, and the one on the strut tower that came from the main harness

-All 4 coil harness plugs are getting voltage to the middle wire on each individual plug with the ignition on.

-My ignitor chip works and fires up my friend's SR powered 240sx when I replace his with mine.

-Ecu lights up when I turn the key to the "on" position (before start position)

-Ecu reads code 55, which i believe it means system hasnt detected any errors.

-Ecu connector is tightened down well and wires on the harness visible appear to be in good condition.

-I can connect everything up and make it ready to start, but obviously the engine only runs on 1 cylinder.

-Ignitor chip does get warm to the touch when I crank her over for more than 10 seconds.

-After trying all of this I took the cover off the ecu to look for fried resistors or diodes, and so far its clean on both sides of the board. But Im sure that a fried chip shows no visible damage so im sure its possilbe maybe?


Only thing I didnt try was to swap ECU's with my friends car (because he doesnt wana touch his wiring at all because he is paraniod something will get messed up, its bad enough I had to beg him to do the ignitor chip).

Can it be a bad ecu? I purchased it from Motorworks here in Westbury, NY

Please can somone help me? Can any of you think of anything possible?

I have tried everything that I can imagine!
 

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SUPRAS FOR LIFE
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4,188 Posts
hey makipsee....u r barkin up the wrong tree man...post it on the nikko forums...no one here knows about the 240s man....by the way do u get any fuel pressure....check n see if the crank angle sensor is hooked up.....go over ure grounds again...check the voltage at the ecu....well thats all i can think of now...
 

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medford turbo addict
Joined
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841 Posts
Discussion Starter #3
yea i know we posted on there also were trying 2 get as much help as we can the fuel pump turns on BUT it stays running even if the motor isnt running like... when u turn the key on and dont start it the pump should turn off after like 3 secs buit it doesnt... also i know some people in the forum have 240s like sal and some other people so u never know doesnt hurt
 
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