205 injectors pulse wiper switch
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Thread: 205 injectors pulse wiper switch

  1. #1
    Fellow Frogger! flock's Avatar
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    Default 205 injectors pulse wiper switch

    I'm having some trouble starting the 205 and I'm thinking it's from a previous owner's dodgy wiring of the alarm.

    But I noticed when the ignition is on and I turn the rear wipers on and off the injectors pulse once I find this very odd as they should be practically isolated from each other. Does this happen on anyone else's 205? It's a series 2.

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    1000+ Posts CEyssens's Avatar
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    When I got my GTI the interior light would make the rear wiper go, but that's probably no help for you. Dodgy wiring in its purest very common form.
    You are very right in expecting that those two functions should be separate. Now the search begins for the bad wiring hack!

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    Fellow Frogger! flock's Avatar
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    Haha great!

    I am not looking forward to this.

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    Exactly why after the faggot stuffed my jetronic system I had no hesitation going motronic, or better yer fully stand alone, SOunds like a few nights at your place, get dinner ready and Demannu me and you will fix them!
    87 S1 205 GTI / GTI6 powered a project underway
    306 convertible (gti6 candidate)
    307 HDi wagon
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    Probably had NOS hooked up through the rear washer

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    Have to sort out this birds nest first.



    Poor execution on the installers part
    No offence if this was your car I'm sure it worked before all the solder joints cracked under the shear amount of electrical tape

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    1000+ Posts CEyssens's Avatar
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    Yucko!! I've had to repair lots of those over the years. More often than not when I've bought an old car the wiring has been a dogs breakfast. Crazy what gets hacked and then surprise surprise the car is temperamental.

    My white GTI was purchased with a half done S1-S3 dash conversion which is a bit of a wiring mess not to dissimilar to yours.

    Hope you get it sorted relatively easily.
    cheers Craig

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    Couple of q's - is it just the rear wiper that causes the injector pulse? What happens when the rear wiper is left on does it pulse each time the wiper activates? Is it just one injector or all 4 that pulse (at the same time or in sequence if all 4)?

  9. #9
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    Just the rear wiper. Only the moment I turn off the switch, so even before the wiper is home. Seems to be all injectors, tachy relay also clicks and the fuel pump acts as if it's priming. Matthew suggested putting a diode across the motor to prevent back emf which is most likely what's causing it.

    Got the car started today- ended up being a combination of dodgy connections on the ignition coil and the pickup from the distributor was shorted.

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