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90 Tracker died, burning smell in dash, won't run now...
#7
Lots of progress this evening...

Engine runs fine on starter fluid.

Fuel pump seems to make noise (hard to detect) while cranking.
Unsure of this, I ran through diagnostics for chart A-7A confirming that fuel pump relay and circuits are all functional.

So, I suspect fuel injectors may not be injecting. I looked at diagnostic chart A-5, and the first check is to listen for injecto noise while cranking, using a "sound scope." I used my auto stethoscope, and I feel like I hear a rapid clicking that persists for about a half second after the key is released. I'm not sure if this is the injectors or some other solenoid or something. I'm trying to decide whether to proceed with the "no injector noise" path, or take the air intake off to look at the injectors...

Either way, I think I probably have it narrowed down to the ECM, injectors, wiring between the two, or maybe fuel pressure. I really doubt it's fuel pressure, since the incident involved a breakdown with dash smoke.

I'm anxious to get back to it tomorrow evening.

Thanks,
Wes
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RE: 90 Tracker died, burning smell in dash, won't run now... - by GeoCacher90 - 05-27-2016, 01:21 PM

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