43 replies to this topic

[jdm-vr4]

To start with i have 87 vr4 which is practicly stock a part from boost controler and bigger dump pime. Currently running the stock dual board ecu.

And now the problem.

i bought 808 ecu which i know is set for 510cc, and i got one of keydiver chips and today i got the chip put in and and put it in the car. on it's way i put 055 maf and swaped all the wiring as to what they say on vfaq. i also swapped the pins on ecu wiring and now when i start the car it dies on idle.

jeff said that the chip was made for 450cc injectors to work on my car.

so can anyone plese tell me what went wrong???

before i actually put the chip in i run the ecu and it had the same outcome as with the chip in.

please help!!!

[JSTYLE]

cam sensor wires?

Jon

[jdm-vr4]

cam sensor wires?

Jon

sorry but i don't get what u mean :roll:

[CLuTZ]

Is swapping the pins even necessary? Try swapping them back, becuase pin 6 is the idle position switch..........


I used a facelift eprom ECU in my pre-facelift loomed/engined GSR galant, and didnt swap the wires and ran great (after I went over every wire 20 times and found out the 055 MAF I was using was fucked)



dre

[jdm-vr4]

i tried that already and no luck:(

[CLuTZ]

Okay then i'd start by tripple checking the AFM wiring. I found the VFAQ page a little confusing at first......

here's a simplified version that I made:





Now, the only wire that arent marked idetically is 1) Idle position switch on the 1G plug, and 7) Volume air flow sensor reset signal on the 2G plug. These are supposed to be connected together


This is the way I did it:

2G-1G
1 - 4
2 - 7
3 - 2
4 - 3
5 - 6
6 - 8
7 - 1
8 - 5

I had issues when I did my AFM swap, because it turned out the AFM (055) I was using was fucked.

Wire 7 on the 2G plug, is the idle position switch. That goes with wire 1 on the 2G plug....


Failing that, see if you can borrow someone's AFM, it could be poked. Did you get the eprom in the right way on the board?




dre

[jdm-vr4]

the wiring is correct and the eprom sits in the right way(notch facing in<---)

i'll try differen afm

[CLuTZ]

You said on another site that you have a leaking capacitor?


Could mean your ECU is fucked dude

[jdm-vr4]

yeah i'm aware of that now, although it doesn't look like the leak has damaged the board so i'm gonna change the capacitor and c what happenes

[VR-4-PLAY]

it looks like the caps may have already been changed? See how the big one isnt sitting straight up and square to the board? The previous owner may have noticed the originals leaking and replaced them, but maybe too late....

[brisvr4]

Take it into Petroject on Newmarket Rd in Windsor and get them to inspect it Marek.
At least that will rule out complete failure.

[jdm-vr4]

Take it into Petroject on Newmarket Rd in Windsor and get them to inspect it Marek.
At least that will rule out complete failure.

i think i'll have to do that but still i want to replace the capacitor first

[jdm-vr4]

predatorvr4 said the ecu has some chip in it(bottom left corner where the funny glue is), so do you guys think this would have any affect on what is happenening???

[CLuTZ]

Thats the knock sensor board, so no- mind you, I have never seen an ECU with that amount of glue on it though

[jdm-vr4]

Thats the knock sensor board, so no- mind you, I have never seen an ECU with that amount of glue on it though

yeah it looked very strange to me too but hey...

so would the knock sensor and the chip on it had anything to do with my problem????

[CLuTZ]

you should try someone elses ECU in it before you can rule out the wiring.

If you contact MDK87- he bought my GSR galant running a single board, 2G MAF, and 510cc's- he's also in Brizzie.

Try that ECU, and if it doesnt start/idle, then its your wiring, if it does, its your ECU

[jdm-vr4]

and this is what i have discoverded on the other side of that ecu.

please tell me what that is???

also you can c white stuff underneath the capacitor(looks like it eaten away the board)

sorry about the size of photos:)

[CLuTZ]

i'd ask for my money back

[jdm-vr4]

yeah well it was a while ago and i payed 100 so i'll let it go:)

is that even fixable???

[rob323]

Take it to Petroject and ask. Also check your isc cause leaking caps has been known to destroy other things.