need a little help or some info on this

just re fitted my engine and in the process of starting it, but ive noticed that i have a constant buzz from my coil pack and when i check for a spark i have a constant one!

anyone got any ideas why this is and what causes it?

 

try the crank sencer m8

 

Bounce for the batty

 

cheers dave i'll have a look at that

alex -

 

Had this once on an L8 equipped Escort Cos. The connector from baby board to main board was not making proper contact. A slap to the ECU made it work initially then I fixed it properly.

 

Anyone else got any ideas ?

The ecu hasnt been touched !

 

Neither had this one...

 

It must be powered in some way?Check the wiring is correct,not snagged when you put the motor back in etc.
If you have a wiring diagram,I can tell you the most likely place to look for faults.

 

cheers for the replys guys

i have access to wiring diagrams, any suggestions on where to look for faults are welcome

when the engine was removed and put back in my loom was tucked out the way so i'm pretty sure its not snagged, but i'll check that as well

would this constant sparking make the car hard to start as i'm having issues starting the thing!

 

Have you checked the ECU like I said?

Dead coil driver board or baby board connections. Thats my experience of this fault. As soon as the ignition is on, a buzzing and a constant spark. The car will not run like that.

 

ive not had a chance to check it yet daz, i went to the garage to find out why my fuel pump wasnt priming so that took up most of my time before i had to head home as it was getting dark, having no lighting is shiiit

i'm off tomorrow so i'll grab it and crack it open and have a look

 

I've seen it twice now and it's been the board plug. One car hadn't even been worked on. Just came to go out in it and nothing but a buzzing everytime the ignition was switched on and just cranks over and over and over.

 

that is pretty much exactly what i have right now

it pops when turning over and if i crank it over long enough and then switch it off and the ign back on i get a massive bang out the exhaust!

 

Sounds exactly the same. Just take the lid off, with the ignition off, un plug it and plug it back in and then see if it starts.

 

i'll give that a try tomorrrow, thanks again for you help

i'll keep you updated

 

ive taken the lid off the ecu and had a poke around, i cant seem to see anything that loose. i have given all the connections and chip a push to make sure they were all making contact

not had a chance to start the car yet, so i'll give that a go today if i get a chance, if not it'll be tomorrow

 

How many plugs is it constantly sparking on all four or just two ??

 

i only checked plug no.1, i just presumed it would be doing it on all of them

 

strange, if you need, feel free to fire the ecu in for testing.

 

cheers James - its very strange as i cant remember it doing this before my engine came out for a rebuild!

i'll give it another go after we've re-checked the timing is 100% and see if it fired up, if not i'll drop you a pm and get it send in for testing

 

Isn't this what Alex's did when teh wasted spark board blew?

 

yup thats what fatty told me and he said it was still doing it, yet i dont remember it making the buzzing noise!

then again you cant hear shit over that loud chavtastic exhaust he has

 

check if its sparking constantly on all cylinders if its just 1 and 3 then its one of your ignition amps if all four its a different problem.

Check the 2 wires that go through the bulkhead to the ecu pins 21 and 26 make sure they are not shorting to earth.

Check that you have battery voltage at pin 4 on both 7 way connetors (centre pin)

 

did u cure the fuel pump fault?i had this once,i also lost the fuel pump relay earth(think it goes to ecu pin 28 if i remember right?)
i dont exactly know what the fault was but i went into the ecu and resoldered the wasted spark connections and it never did it again,maybe disturbed something back in ecu??either way i would deffo say mine was ecu related

 

didnt think of the ign amps, i'll check the other cylinders tomorrow and see what they are doing!

i checked pins 21 and 26 but i'll re check them and i'll check for voltage to the middle pins as i didnt do that

yeah i did in the end, well it appears to have been sorted, i found an earth pin had come out a reply which i think might have been the ecu relay? as my mate alex had his iaw connected and it wasnt picking the ecu up at all ( not tried the iaw since i reconnected the pin though)

ive had my ecu apart today and it all looks ok, so i'm going to give it another go and see how we get on

we're going to re check the timing first off just to make sure and then go from there to checking the other plugs to see if they constantly spar or not, so i'll keep this thread updated

 

just wanted to update this

i took my ecu apart last week and everything seemed to be seated ok, so yesterday morning the ecu was re-connected to the car and a mate of mine helped me check the constant sparking issue

we checked all 4 cylinders and the constant sparking issue had gone, not sure how as i didnt really do anything to the ecu other than look at it and prod it a few times

we then re checked the timing and found the dizzy was out slightly so we re-adjusted that and with another mtes iaw software connected i turned the key and she fired up pretty much on the button

cheers to everyone who helped me out