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Help needed car off road a month now

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Help needed car off road a month now

Postby Elmar » Sat, 24 Aug 2013 9:55 +0000

Help needed please.

I have a 1995 Mk1 which will not start its off the road a month now.
We found a short on the 12v rail red/white wire by the cylinder head.
1 of the main fuses had blown which is replaced. The car will turn over but has no spark.
You can smell petrol from the back.
I have tried a 2nd hand ECU as we thought it may have got fried and I tried a 2nd hand CAS sensor.
I have googled for hours about the problem.
I am about to go and get a coil pack but I need some help.
I found an article saying that on the coil pack brown/yellow for plugs 1&4 and brown for 2&3 that with the ignition on but the engine off that you should have no voltage and with the engine turning over you should get .5 on each wire as the ECU pulses the coil packs.
I’m getting a voltage with the ignition on but engine off. I’m wondering is this normal or have I got a short somewhere and its killing the pulses. I have the 4pin connector type of which 1 is blank.
If anybody has a volt meter could you see what your own car is doing MK1 only.
I would be very great full thanks.
Elmar
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Re: Help needed car off road a month now

Postby leamyj » Sat, 24 Aug 2013 4:52 +0000

ok Elmar, first question..where are you located?? Maybe someone nearby could drop in to you and you could check one against the other..side by side as it were.??
Mine is not road legal right now so I can't offer my services I'm afraid.

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Re: Help needed car off road a month now

Postby Steve » Sat, 24 Aug 2013 9:23 +0000

Ditto... have the engine apart (again) at the moment.
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Re: Help needed car off road a month now

Postby rhysmate » Sat, 24 Aug 2013 9:25 +0000

Steve wrote:Ditto... have the engine apart (again) at the moment.


i am also out of action. If youre near cork, ill bring over my coil pack and ingnition module to help

i wonder could this be the issue

http://www.mx5heaven.co.uk/acatalog/MX5 ... e_414.html
bend the rules............rule the bends

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Re: Help needed car off road a month now

Postby Elmar » Sun, 25 Aug 2013 10:26 +0000

Thanks for the replies.

Rhysmate my car does not use 1 of them. The ignitor is park of the coil pack in my car.
John I live in Blackrock in Dublin the only thing is my car is with the mechanic so I don't think I could go down there with people and start working on the car.
He has asked me to see if I can dig up any information on the mk1 with regards this problem. Robert by the airport has been in contact with him and has been a great help with parts and offering a loan of coil pack just for testing. I think he is near to cracking it. I'm just a bit concerned after reading what that guy on the net said. That there should be no voltage on the trigger wires with ignition on and engine off. I need to ask the mechanic to do the same test with the connectors off the coil packs maybe there is a leak in the coil packs.

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