Author Topic: Car won't start...ECU?  (Read 4751 times)

Offline skcollob_ho

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Car won't start...ECU?
« on: 29 September 2009, 17:47 »
I drove my valver into work this morning, as normal, without issue. It's been sitting outside work until this afternoon when I decided i wanted to go up the shop to get some pick n mix to see me through the rest of the afternoon. I tried starting it, but no joy. It turned over fine, but just wasn't starting.

I called the AA out, and after testing it and trying a new coil pack on it, he said it was likely to be the ECU thats had it, as there was no spark, and everything else checked out fine.

Now my initial reaction was to scream like a 6 year old girl and curse my luck, but when I'd calmed down, i tried to think logically. So here goes with the questions...

1. Has anyone else suffered this fate, and can confirm what the AA man said, which was basically that my car had had a good innings, but all good things must come to an end?

2. If  was to remove the ECU, is there anywhere I could take it to be tested?

3. If the ECU is indeed knackered, what will replacing it involve, and how much is it likely to cost me?



Your help is greatly appreciated.
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Offline sharki786

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Re: Car won't start...ECU?
« Reply #1 on: 29 September 2009, 18:11 »
i had the same issue last year or begining of this year, turned out to be the coil pack, the car just turned over and over but didnt fire up. check to see any melted plastic on it, check for warmness i think it should get hot or warm when turning car over if its working it will wrm up or get hot dont take my word for it. also get some one to start it during the night and you might see the coilpack glow blue i think.
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Offline wilde

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Re: Car won't start...ECU?
« Reply #2 on: 29 September 2009, 18:12 »
best to check the crank sensor and hall sensor 1st

Offline skcollob_ho

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Re: Car won't start...ECU?
« Reply #3 on: 29 September 2009, 18:26 »
@  sharki, he was carrying a spare coil pack and it wasn't that as there still was no spark.

@ wilde, how would i go about checking that? I'm no mechanic!
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adamrob69

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Re: Car won't start...ECU?
« Reply #4 on: 29 September 2009, 18:27 »
I would doubt very much that its an ECU problem. Look through you ignition system before doing anything drastic, coil pack, dizzy etc

--Also check immobiliser

Offline skcollob_ho

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Re: Car won't start...ECU?
« Reply #5 on: 29 September 2009, 18:32 »
I would doubt very much that its an ECU problem. Look through you ignition system before doing anything drastic, coil pack, dizzy etc

--Also check immobiliser

I have to disable my immobiliser before I can start my car anyway, so that shouldn't really be the problem, should it?

AA replaced the coil pack with one he was carrying with him, but still no spark.

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Offline wilde

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Re: Car won't start...ECU?
« Reply #6 on: 29 September 2009, 18:34 »
skcollob_ho i just bought a crank sensor cause i thought that was the prob , best bet is to get a mechanic to plug vag com into ur car and see if it shows up any faults . my 1 did the same it turns over fine but no spark at all and ive still not found the prob with it and ive replaced everything that ive been told that could be wrong with it .

Offline skcollob_ho

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Re: Car won't start...ECU?
« Reply #7 on: 29 September 2009, 18:55 »
If it helps knowing, in the last 6 months its had a new coil pack, dizzy cap, leads & plugs.

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Offline Wayne

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Re: Car won't start...ECU?
« Reply #8 on: 29 September 2009, 20:04 »
My guess would be an immobiliser issue.

Offline Mikester

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Re: Car won't start...ECU?
« Reply #9 on: 29 September 2009, 22:35 »
@  sharki, he was carrying a spare coil pack and it wasn't that as there still was no spark


Still makes me laugh, aa carry them as standard.

God VWS are sooooooooo relibale.