Ls-v Da Teggy

My lsvtec build starts fine with my obd0 ecu, but when i hook my jumper harness and my p28 ecu it wont start. Any ideas?

jdmjunkieXL

Check if the jumper harness is pinned correctly with a dmm

Bseriesvtecgirl

I had a similar problem. The jumper harness wasn't wired correctly for vtec so we had to spline in and directly to the jumper. Start there and a pinout diagram would be your best friend

mouab18c1

iTrader: (5)

I don't see how vtec has anything to do with the car not starting. Are you sure there wasn't something else wrong with the wiring?

OP who did you get the harness from as well as the p28?

Ls-v Da Teggy

I bought a obd0 to obd1 jumper harness online.

mouab18c1

iTrader: (5)

I know but from who?

Bseriesvtecgirl

I was only relating that the jumper harness may be the problem. I guess around here you have to be extremely detailed when relating problems to certian people.

B_Swapped93

was/is the p28 "chipped" ? x2 on from where I've seen some pretty cheap ones around.

m4xwellmurd3r

oh you know what. I heard of an issue with jumper harnesses. The distributor needs a jumper harness to go from OBD1 distributor to OBD0 engine harness.

There are TWO white wires that apparently, have been known to be wired wrong on the jumper. If you got a cheap jumper harness you could have an issue with the two wires hooked up wrong. One company I think fired a guy because he had wired them wrong on more than one occasion.

mouab18c1

iTrader: (5)

When trying to help someone trouble shoot why would you give a half *** posts? I just clarified that vtec has nothing to do with it not starting. As stated by your post vtec was supposedly the issue why your car would not start but what do I know..... Probably nothing

Ls-v Da Teggy

I have a obd0 distributor too. Its a jdm b16a head on a b18a block. How do i check the harness to see if its 'pinned right' ?

Ls-v Da Teggy

Would a obd1 ecu work with a obd0 distributor?

jdmjunkieXL

I dont think so.....or maybe yea i just looked at a dizzy wiring diagram obd0 dizzy has same inputs and outputs as a obd1 dizzy

http://i859.photobucket.com/albums/a...g?t=1269113805

Hope this diagram helps