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      scooterrr replied to the thread 7.3 IDI Tachometer Woes.
      That's correct, it's a 2 wire magnetic deal that sends an AC signal directly to the PCM through pin 4 and 44. You need this signal for...
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      scooterrr replied to the thread 7.3 IDI Tachometer Woes.
      I just wanted to follow up with where I ended up on this. I ended up replacing that swollen capacitor and re-flowed a few things. When I...
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      scooterrr replied to the thread 7.3 IDI Tachometer Woes.
      Oh, that's not as bad as I was thinking it would be. About the same as scratch and dent specials on eBay... Thank you for that I've...
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      scooterrr replied to the thread 7.3 IDI Tachometer Woes.
      I'm keen for that if this goes poorly, but I could use saving some money so I'll give it a go. If it doesn't work out a core is a core haha
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      scooterrr replied to the thread 7.3 IDI Tachometer Woes.
      Good eye, I totally missed that. I'll try to replace these at some point here soon and see what kind of results I get. I'm still a...
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      scooterrr replied to the thread 7.3 IDI Tachometer Woes.
      Well I popped the PCM out and it seems like this blue square component is burnt up. Does anyone know what that component is, I can't for...
      • top view.jpg
      • blue thing.jpg
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      scooterrr replied to the thread 7.3 IDI Tachometer Woes.
      This seemed to be kinda the idea from what I gathered from the other post I found. It just seems strange to me that by jumping those...
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      scooterrr replied to the thread 7.3 IDI Tachometer Woes.
      Interestingly the tachometer does work with the PCM harness plugged in and the PCM relay pulled. However, it reads really low RPM's...
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      scooterrr replied to the thread 7.3 IDI Tachometer Woes.
      So I was just able to work on it for a bit before the rain started pelting me. Here's what I found. PCM is definitely getting power...
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      scooterrr replied to the thread 7.3 IDI Tachometer Woes.
      I think I've got a code reader hanging around somewhere, I'll take a look for that and see what I can find. As for those inputs, I'll...
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      scooterrr replied to the thread 7.3 IDI Tachometer Woes.
      I'll take another look at things tomorrow, and write down my results so I can share them here. Fingers crossed it's just a bad ground or...
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      scooterrr replied to the thread 7.3 IDI Tachometer Woes.
      I assume you're referring to Relay 1 in the fuse box in the engine bay? I've checked this relay and so far as I can tell it is working...
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      I recently acquired a 1993 F250 4x4 with the 7.3 IDI for $2300. Came with a dash saying 150,000 miles, but who knows if that's accurate...
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