coil diagnositc help...
07-26-2006, 06:52 PM
#1
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coil diagnositc help...
Ok folks - could use some help. The sedan has developed a stumble - at idle and through all range of rmp.
I'm pretty sure it's a coil. Here's why...
new plugs (1 week)
new plug boots (24hrs)
swapped new pos in both slots - no change...
so tonight I pulled the coil harness (all 5 coils and the cover) out of the avant and stuck in in the sedan - stumble is gone.
So got to be the coils right?
But when I unplug the injectors one by one - all seem to degrade performance. So I suspect a coil is just mostly dead - not completely dead. How do I figure out which coil is dying???
TIA
I'm pretty sure it's a coil. Here's why...
new plugs (1 week)
new plug boots (24hrs)
swapped new pos in both slots - no change...
so tonight I pulled the coil harness (all 5 coils and the cover) out of the avant and stuck in in the sedan - stumble is gone.
So got to be the coils right?
But when I unplug the injectors one by one - all seem to degrade performance. So I suspect a coil is just mostly dead - not completely dead. How do I figure out which coil is dying???
TIA
07-26-2006, 06:58 PM
#2
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Eh, just get a 1.8T coilpack and don't deal with those faulty coils :)
<ul><li><a href="http://www.034motorsport.com/product_info.php?cPath=26&products_id=450">034 Motorsport 1.8T coilpack</a></li></ul>
07-26-2006, 07:04 PM
#3
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yea, yea, yea - stillhave the heat issuse to work out...
The OEM is far more durable - I may need to go that way but a single coil replacement is still far less.
thanks
thanks
07-26-2006, 07:28 PM
#5
I presume that you have read the procedure in the link inside.
To test the coils you need to have the OE coil pack on its back, Fuse 17 (FP) out and a old fashioned gap-type coil tester. Test one at a time with a helper to turn on the ignition. The coil that the spark jump is the shortest is the likely suspect.<ul><li><a href="https://forums.audiworld.com/s4s6/msgs/115408.phtml">https://forums.audiworld.com/s4s6/msgs/115408.phtml</a</li></ul>
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07-26-2006, 07:51 PM
#10
What "heat issues"?? I "invented" this conversion and have been running on 1.8t coils since...
last September. The only "heat issue" is if you put the metal "20V Turbo" over top of the 1.8t coil packs. Then they die in a few weeks. Leave the coil cover off and everything is fine.
You can to the DIY version of this for about $260 (or less).
You can to the DIY version of this for about $260 (or less).