fuel pump constantly priming

[4piknup]

Yea, like k said. Even chase pin 8 all the way into the ic. Then you know what one to compare.

I have had a few that the ic look fine but have failed. In fact my ute has lost idle control again... the isc coil has stuffed up and I think its done the ic driver as well. Will have a look at mine tomorrow.

The pump one is a bit strange to blow. I can understand the isc as the coils short and run lots of power into the ecu. The wg solonoid is similar.
But pretty hard to dump a heap of power into that white red wire.

 

[4piknup]

Found my bible. Ic108 controls fuel pump

 

[mathew_colville]

thanks everyone for the replies, ill have a look this arvo if i get a chance and see what i come up with

 

[mathew_colville]

got this dubywacker


got no idea how to use it, im guessing unplug the ecu and open it up and stick it on the ic driver, im guessing i dont connect it back upto get a reading?

i probably wont get time to check it today though, my wife has left me witha list of chores to do, if i dont do them i might end up sleeping outside with the dog tonight :blink:

 

[khubner1]

the one right down the botom is diode check. and looks like the 200 ohm setting doubles as continuity

 

[4piknup]

Use the diode check on the ic.

I have a ecu here with a no pump condition. I tested the ic- ok. So i did the jumper mod and fitted my ecmlink. Still no pump.
Not sure where to go now with that one...obviously there is transistors that fire the ic108. But it will take some time to track them down.

 

[mathew_colville]

thanks to jack of all for telling me everything i had to do, these are the results i got
ic108
black red
8 7 = 0.6
8 1 = 0.6 1 = open circuit
5 4 = 0.4
4 1 = 1
4 7 = 1.6
4 2 = 1.7
4 3 = 1
4 6 = 1.7

ic105
black red
8 7 = 0.6
8 1 = 0.6
5 4 = 0.4
4 1 = 1
4 7 = 1
4 2 = 1.7
4 3 = 1
4 6 = 1


ic106
black red
8 7 = 0.6
8 1 = 0.6
5 4 = 0.4
4 1 = 1
4 7 = 1
4 2 = 1.7
4 3 = 1
4 6 = 1


ic113
black red
8 7 = 0.6
8 1 = 0.6
5 4 = 0.4
4 1 = 1
4 7 = 1
4 2 = 1.7
4 3 = 0.8
4 6 = 1


ic112
black red
8 7 = 0.6
8 1 = 0.6
5 4 = 0.4
4 1 = 1
4 7 = 1
4 2 = 1.7
4 3 = 1
4 6 = 1




ic108
pin 7 - ecu 8 = 0.4
pin 1 - ecu 22 = 0.4

ic105
pin 1 - ecu 18 = 0.4
pin 7 - ecu 5 = 0.4

ic106
pin 1 - ecu 17 = 0.4
pin 7 - ecu 4 = 0.4

ic113
pin 1 - ecu 3 = 0.5 2nd plug
pin 7 - ecu 10 = 0.5 2nd plug

ic112
pin 1 - ecu 19 = 0.5 1st plug
pin 7 - ecu 11 = 0.3 2nd plug

 

[4piknup]

Looks ok.
Im only looking at ic108 as thats the pump one. You have good connection from ic108 to ecu pin8 so the tracks etc are fine.
Can you test ic108
Red on pin4 black on pins 1, 3, 6, 7.
Pin4-pin1, 7 should be the same (.5 ish)
And pin4-pin3,6 should be same (.6 ish)

If so, I have posted on ecmlink for more info on the triggering for pin6 and pin2. But this is a area of the ecu that I havent knowledge about yet. But its showing similar problems to the ecu I have on my bench now.so if we fix yours, mine will perhaps have same problem

 

[mathew_colville]

from looking at it the white with red goes to pin 8 on the ecu and is earthed by the ecu so either your loom or ecu had an issue between the MFI relay and pin 8 on the ecu and they just earthed to by pass.

if it was me i would do a continuity check between the cut section of r-w and pin 8 and see if you have cont (if you do rejoin the two parts and see if the pump works) if not you have confimed a ecu issue. on pin 8 what kind of ecu are you running? i'll have an evo 1 ecu up for sale soon

sorry for not writing back sooner, all this ecu stuff frying my brain
my ecu is the stock gsr one 7040, there is a picture on page 1 of the code on the ecu, would an evo 1 work in my car?

 

[mathew_colville]

ill get those code this afternoon jack of all, see how i go

 

[mathew_colville]

ic108

red black
4 1 = 0.46
4 3 = 0.526
4 6 = 0.615
4 7 = 0.46

is that all you needed?

are you talking about the ecmtuning site for the triggering info? do you want me to do this?

 

[khubner1]

To run the evo 1 ecu you'd need the 510 cc injectors and 609 afm aswell luckily for you I'm biting the bullet and swapping those out at the same time so when that happens if you are still interested I may do a package deal on the lot

 

[mathew_colville]

yeah i could be, will my fuel consumption increase alot with these?

can you pm me with a rough price and roughly when are looking at getting rid of it?

 

[4piknup]

ic108

red black
4 1 = 0.46
4 3 = 0.526
4 6 = 0.615
4 7 = 0.46

is that all you needed?

are you talking about the ecmtuning site for the triggering info? do you want me to do this?

Those figures look good.

I wrote on the ecmlink site. Dmertz replied that it was likely to be cap damage under the heatsink or faulty icdriver. Yours and mine have no cap damage and both test fine for icdriver faults.

That is as much as I know. For now.

You could put your chip into the evo1 ecu, then you could keep your afm and injectors

 

[khubner1]

on the 1.8l with an evo turbo aswell my fuel consumption was about the same. right now i'm running super rich thanks to the new engine just completly disagreeing with the map in the ecu so my fuel economy is down to like 300km to a tank

 

[mathew_colville]

hmm well im definately interested in your ecu khubner, especially seems we may never find the cause of the fuel pump issue :thumbsdown:

jack of all - if you come up with anything keep me in the loop as id still like to repair this one if i can, even if it ends up being spare

 

[4piknup]

Sure

 

[khubner1]

i'm about a month off of being ready to pull these items in favour of a haltech will let you know once i'm closer

 

[mathew_colville]

ok so just to be sure i checked all the fuses and they were all ok

i used this to check the cas (the colour of wires is different but if you follow what pins to put it in it works): http://www.injectronics.com.au/assets/Uploads/InjectronicsTechnicalBulletin2.pdf
everything was fine there

 

[mathew_colville]

Sorry just trying to get my head around this still:

Ic108 controls the aircon relay and the fuel pump - so out of the 8 pins do half control the aircon relay and the other half control fuel pump, do we know which ones control the fuel pump?
should my air con work if the fuel pump doesnt?
am i able to test the transistors using my multimeter? if so how?
would the fuel pump connector check in the engine bay tell me anything useful?
Jack of all -if theres anything you want me to check or do just let me know, im happy to help in anyway possible