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Another no spark - all the usual suspects replaced already 200 1993

posted by  robbmcc on  Sat Jan 16 12:49 CST 2010
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last visit: Thu Oct 23 08:41 CST 2014
[RELATED]

Thanks Art - as always a chocked full of info reply. Let me get a clarification if I can - the power at pin 4 on the power stage is just with the key on, not cranking right, ie, the only test while cranking is at pin 1 where you want to see a winking led test lamp, right? I'm not exactly sure where I'm going yet but I'll get on this in the morning. If the ODB says ECU is powered up and the inputs are all there at the power stage but there is no spark then I'm looking at a dead 3 week old Volvo OEM power stage? That doesn't seem likely. I guess it could be wiring from power stage to coil. I did try the test where you measure the ac voltage at the red/white wire on the coil coming from the stage while cranking and really didn't see any although as you say DVM's are spotty in these areas. I'll see tomorrow and post back. I'm sure glad this stopped being intermittent and right in front of the house too!
Thanks again,
Robb






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