Jump to content


Show

billybonkerz

Member Since 05 Oct 2012
Offline Last Active Oct 12 2012 05:13 PM
-----

Posts I've Made

In Topic: Fiesta Zetec Only Firing On 2 And 3 ........ Ive Run Out Of Idea's

12 October 2012 - 11:52 AM

If you can see a small voltage fluctuation on the 1 & 4 wire, I doubt it would be the ECU, it sounds more like a high resistance in the wire between the ECU and the coil pack, or the ECU connector itself.
A transistor output will either fail as a short or open circuit.
Have you removed the ECU connector and metered out the cable ?

You really need an oscilliscope to check the output from the ECU, at idle RPM the ECU output will be sending a ground shot around 12 times a second.


right, i chased the wires all the way from the coil to the ecu, i actually replaced the 2 outta wires incase there was an internal break i couldnt see, the car is exactly the same..... the thing ive just noticed is that when the cars warmed up to temperature if i hold the revs at around 3k for a few seconds the car actually starts to fire on all 4 cylinders, as soon as the revs drop below 2k even for a second it reverts back to firing on just 2 until i start the process of holding the revs at 3k again.... any idea's where to go next with this?

In Topic: Fiesta Zetec Only Firing On 2 And 3 ........ Ive Run Out Of Idea's

11 October 2012 - 05:23 PM

just to add its definetly not the coil pack, i was worried that is was due to it being a euro car parts copy that i purchased, i swapped the 2 outta wires on the coil plug and it swapped from firing on cylinders 2 and 3 to firing on 1 and 4 so it has to be something else.

i also put a multi meter on the 2 outta wires and they are both sending different amounts of current, someone has suggested maybe its the ecu gone up the wall, anyone got any suggestions? what do i need to change if i buy a replacement ecu, is it a straight forward swap with the key/transponder to match the new ecu?

In Topic: Fiesta Zetec Only Firing On 2 And 3 ........ Ive Run Out Of Idea's

11 October 2012 - 02:12 PM

This should be correct for your car;
Coil Pack pin1 Black or Black/Orange wire to Pin 58 ECU (Coil signal ground Plugs 2 & 3)
Coil Pack pin 2 12v Violet/Blue wire.
Coil Pack pin 3 Black or Black/Green wire to Pin 59 ECU (coil signal ground Plugs 1 & 4)


thanks mate, will give it a go later

In Topic: Fiesta Zetec Only Firing On 2 And 3 ........ Ive Run Out Of Idea's

08 October 2012 - 01:20 PM

can anybody shed some light on this?

In Topic: Fiesta Zetec Only Firing On 2 And 3 ........ Ive Run Out Of Idea's

07 October 2012 - 06:36 PM

or am i missing something else that could be causing it??????????