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Found 2 results

  1. Hi again The saga of my 1.6 CTI continues.... I originally started a forum relating to Tachymetric relays which which also embraced the subject of ' no power at injectors'. After investigation a melt down in one of the wiring looms appeared to be the problem. After reconnecting the wires the car started and all seemed well enough. I didn't run it for long without the AFM etc but after putting it back together it became clear that it was only firing on 2 cylinders..no.s 1 an 4. It starts first time and doesn't actually sound too bad. I have changed the ECU (to no avail) even though I couldn't see how that would affect only 2 cylinders? I was minded of Anthony's comments in another forum regarding Haynes wiring diagram and their accuracy and looking at their wiring diagrams I cant see how this problem could happen. I am led to believe these injectors are powered in pairs. The Haynes wiring diagram looks as if they (injectors) are wired in series? This problem has to be linked to the original wiring problem but after much deliberation cant see a logical troubleshooting route? With the engine running there was 12v either side of the injector connections on cylinders 2 and 3 and although that didn't seem right to me from what I have read that may not be a bad thing? That said I am not sure what to do next and would appreciate any comments. There is a good blue spark at all 4 spark plugs etc., plenty of fuel . Again it is injector related but I have only managed to solve half the problem. Other than stripping back more wires is there anything I have missed? Thanks
  2. Hi and Merry Christmas NO VOLTAGE AT THE INJECTORS WITH THE IGNITION ON OR WHILST ENGINE CRANKING OVER It is my intention to open a new forum topic even though this is not an uncommon problem because I don't feel that that anyone has fully got to the bottom of this one? I hope that I am wrong and I have missed something? Phase 1 1987 CTI doesn't start unless Easystart is used then fires until the ethanol (or whatever is in it) expires. It is pretty much a phase one car (although on the cusp) and has the Tachymetric relay unfortunately (for ease of access for testing) situated under the battery etc. I have had the car for over 25 years and this is first time it has had starting problems other than for obvious reasons. Fuel pump etc. etc. are all working. There have been no modifications made to the car. I have changed the Tachymetric relay with a new one but it didn't make any difference. I am fairly convinced that this has something to do with the Tachy relay setup. I am no auto electrician for sure and I am trying to understand the 'mechanics' of the 7 pin relay which I see (at the time of writing) as two 4 pin relays sharing an earth? . I have studied the relay pins and wiring and from reading the other forums I was of the view that the injector 'rail' voltage supply would come from the Tachy relay as I can't see where else the missing 12V voltage would come from (having studied all the wiring diagrams and all). Having read about other people shorting out the three centre pin sockets to temporarily get the engine to run I take this to be connecting the lIve (positve) input to the fuel pump and injection rail (injectors) supports this idea? What I don't yet know is does the relay need to be energised in order to allow the through flow (continuity) of the 12v voltage(?) ..... and if so (and I accept that is an if) could the relay need a 'control signal' for example from the starter motor solenoid before the much needed power to the injectors is provided? Thank you in anticipation of any contributions to this problem and because I have owned this car for so long I may be able to contribute something back.
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