Its Time: Danhtao's Engine Swap Announcement

you know something that i realized?
In the City, its pedestarian friendly, but car hostile
here in socal, its car friendly, pedestarian hostile...

well..u can always MAIL IT!

ok, gonna work on the car tomorrow, sunday, 5/18

so so SO close.
it cranks!
but the fuel pump isn't engaging. and the relays are working and wired correctly, so that means that the ecu is not receiving the signal to turn on the fuel pump.

i connect my laptop tot he ecu... and low and behold.... i can't connect.

... i need to go somewhere to get the pcm confirmed that its fried.

if it is fried..... hopefully it did not get that way from its current setup.... the last thing you want to do is buy another ecu, connect it and fry her aswell......

try setting the fuel pump directly

the ecu power is fused coming from the stock body fuse box.
i want to run power relayed along the car to the fuel line, but i know that the relay is working, and there is power coming to power the relay, but the signal to throw the relay switch isn't there. i don't want to do extra work if its not broken.

i need to confirm that the ecu is fried. i've started checking power FROM ecu, like going to injectors and stuff, while the ignition is on, and the voltage is all over the map. the passenger side fuel rail has 12.25 volts, while the driver side is getting 1 volt. alternatior is getting 11 volts. purge solenoid isn't getting anything. no power is going to the MAF.

either i did one hell of a hack job with the harness, and i cut more than 10 pink wires by accident, or the ecu is just gone.


there has been no modification of power TO the ecu other than connecting it to fused connections from the main engine/EFI relay on the body chassis, so i doubt that is the problem.

i am getting power to the gauge cluster et al, lights work, etc.

am i missing anything else?
what else should i check?

ok, i got some help from the v8rx7forums
gonna do diagnostics and wirign work on thursday

have fun, i'm gonna be at work. btw, i tried to call you back earlier

yea, i was in class, and wasn't really available until 6ish. sorry about that

ok, i got the correct voltage going to the right things now. i'm going to bypass the ecu control over the fuel pump and wire it directly to ignition as previously suggested.

im still kinda puzzled as to why i can't connect the obd2 scanner tho.

you have the dlc connector hooked up correctly?

yea, 1 purple wire from the ecu, 1 engine ground, 1 chassis ground, and 1 12 volt source.

only 4 pins in gm obd2 ports

then it's not obd2. obd2 data link connectors are mandated standard 16 pin, same connector, and within 6ft of the driver seat.

Once you get your car running again Dan..

You need to put this on your hood....


and this on each side of the car....



Come on Who's with me?

i'd put the psycho crusher on my side!!!!!

but it'd have to be a static sheet!!! hahaha

hey jan, no UART for the serial. the 98+ GM vehicles uses a single two way bin wire to communicate with the ecu and the obd-2 programs.

found the problem, bad connections using an ebay weather-pack kit. i'm in the process of re-wiring everything

Glad to hear you found the problem...

it starts!
and the intake almost ate duc!

and i got video!
i gotta upload it somewhere

sweet now that the hard parts is behind.. you just gotta put her together and ref that girl... then we'll be eating up ..bikes on teh freeway in no time.

next up... suspension tuning to handle that beast

http://video.google.com/videoplay?docid=-4473278016812939870&hl=en

at 10:17 PST on May 25, 2008 a monster was born

danhtao wrote:it starts!
and the intake almost ate duc!

and i got video!
i gotta upload it somewhere

puahahahaha that was too funny watch it unfold before my eyes

Duc: "Why'd you shut it off??"
DT: "I didn't do anything."

Love that part