DanChave's Flash Red GTI 16V. Engine strip, clean and paint!

[DanChave]

Have you changed relays yet?

The ecu and fuel relays haven't been changed yet, but both get warm after about 15mins of driving, which I have read is a sign that they are working?!

[DanChave]

So, the temperature dropped to 8deg last night and the car wouldn't fire up. Tried again this morning, with both the ISVs that had been soaking in petrol all night and still wouldn't fire up! I have Lloyds TSB Platinum membership with the AA which includes Home Start, so they'll be hear in an hour and a half. Let's see what they say.............

[BISSONE]

It sounds like its something you have done in the strip down if it ran before, be it that it ran like a dog. Id triple check everything make sure all your earths are good cables are all in good condition with no wires hanging on to plugs for dear life behind the rubber boots. Seems ashame after all the work you have put in. Wouldnt hold much faith in the AA but you never know! Also all the ISv's iv seen all buzz. Good luck

[spikenipple]

Have you checked the fuses? I know it sounds silly but I had a crank sensor crack it's wiring from old age which stopped the car idling, and it blew the engine management fuse. It still wouldn't run properly after I fitted a new crank sensor and I tried 3 different ISVs with no difference - turned out after hours of chin scratching and swearing to be the engine management fuse!

[DanChave]

Well the AA guy turned up, and turns out he is a BIG VW fan, albeit of the aircooled variety lol! He diagnosed it as a faulty coil pack, as the spark was intermittent at best straight from the coil and would struggle to get a spark at the plugs, but the dizzy cap would show spark. I'll be on the phone to TPS first thing in the morning!

I have checked all the fuses, all the wiring has been checked and the wiring that needed it was repaired.

[tshirt2k]

You can prove the coil is faulty be measuring resistances.

[DanChave]

The resistances from the coil pack its self is pins 1-2 is
03.8, 1-3 is 01.5 and pins 2-3 is 04.4............. Does this sound right? I have some autodata but I don't have the resistance values for the coil pack.

[tshirt2k]

The data is in autodata.




They have to be above 2500Ω to be any good. I have tested nearly new ones that were that low.

[DanChave]

I didn't know about those hidden pins! Resistance between 1 and 15 is 00.0 and resistance between 1 or 15 and high tension pin is 03.4. That's all on the 200k ohms setting. Pretty buggered then?

[tshirt2k]

200k range is too high. try a lower one like 20k

3.4k looks good. use a much lower on between 1 & 15