soundwavetsunami

I know what you're all saying... search search search. I have. But here's the thing. I swapped a 87 T2 into my 88 SE. ECU, harness, and engine. But it was having problems with starting and crap like that. So after 2 months of on-off trouble shooting I gave up and got a Microtech. At this time I was absolutly sick of looking at the stock wiring harness so I tore the entire thing out and wired in the microtech by hand. I did a gorgeous job on it too.

But my last problem is the fuel pump. I was checking it out the other night when I was trying to wire in the microtech, but I couldn't figure out which wires were which. I started checking for voltage. None of the pins are getting voltage with the key off, but once its on the red wire (on the fuel pump side of the connector) is recieving anywhere from 2-10 volts inconsistantly. The blue wire is recieving a steady 11 volts. I know one of the wires is supposed to have 12v constantly and another wire should get 12v only when the key is on. So I've decided to rewire my fuel pump. The problem is is that I have an 88 NA body which means no resistor relay. This makes deciphering DaleClarks post harder. That and I have no emissions harness.

So my question to you is how do I rewire my fuel pump with neither of those things? If you could just alter the image in the second post in this thread (much thanks to NZ for it) that would be great.

Thanks.

Oh, and HAILERS: I fixed my starter issue. It's bolted up nice and tightly with all grounds fastened. So it's not that.

RotaryEvolution

iTrader: (30)

run a brand new wire all the way back to the fuel pump and cut the blue wire near the pump and patch in the new wire from the relay. run all new power/ground connections to the relay and the control circuit wire comes from the microtech.


simple enough...

soundwavetsunami

But where does the new wire hook up to? I could hook it up straight to the battery for constant 12v and then hook up the ON one to black/yellow pin by the leading coils. But neither of those choices sound smart or safe.

soundwavetsunami

Anyone? Does that sound right? HAILERS?

lnbrown5981

never mind i re-read the initial question, and realized I did not have an answer

NZConvertible

Forget about the resistor/relay, it's for stock ECU's only. Wire it exactly as per Microtech's instructions. Very simple.

RotaryEvolution

iTrader: (30)

which is the way i said...

it's not a tough diagram to follow, if you are having trouble doing this then you may want to find someone who knows a bit about automotive electrical systems to do the wiring install for the microtech and pump.

even a single connection incorrectly installed will lead to tons of headaches in trying to find out why the car won't tune properly.

soundwavetsunami

d'oh, I just realized that theres a diagram in the back of the book. Ok. So I'm gonna rerun a hefty gauge wire to rear of the car and put a 30 amp (this ok?) fuse in line with it. This wire will run straight from the + post on the battery to the 87 plug on the relay. The problem is is that I can't identify which wire on the fuel pump side of the connector is the one that goes to the 30 plug on the relay. If by anychance you know which wire it is... that'd be awesome.

RETed

Shouldn't this be in the Microtech section?


-Ted