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AustrianVespaGuy

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  1. AustrianVespaGuy's post in Heater box fan replacement cheap and easy!!! was marked as the answer   
    RESOUNDING SUCCESS!!! So no BS, the old monster 3-amp PC fan did in fact work for over a decade, here it sits just before today's swap (already popped of the little safety wire cage thing):

     
    And here's the replacement 5.2" Spal fan 20 minutes later!

     
    And it works BEAUTIFULLY!  I'd estimate (decade old memory by now) it's essentially the same as the stock airflow, or about 2x the airflow the PC fan put out.  Also, 3 speeds from the stock resistor work PERFECTLY!!! Low/Med/High just as you'd expect! It's even a bit quieter than the higher pitched whiny PC fan was.  Really, truly, very stock-like performance in every way! It even LOOKS the part!  For reference, it's the Spal 30103189 / VA37/A101/HD/1-46S 5.2" pusher fan:
    VA37-A101-46S.pdf
     
    I bought mine for $34 on ebay here:
    https://www.ebay.com/itm/Spal-fan-5-2-12volt-pusher-HD-waterproof-for-ATV-Motorcycles-Trans-Cooler/114159255729
     
    How's THAT for a long-term follow up!?!
  2. AustrianVespaGuy's post in Erratic Wideband O2 Sensor Output, Ideas? was marked as the answer   
    SOLVED!! Ok well not actually solved yet, but I'm 100% sure that I've found the problem!  Even though my logs show reasonably smooth MAP and TPS inputs, I must be having some huge noise spikes in the TPS signal, because my TPS acceleration enrichment keeps kicking in randomly!  At idle, the TP: AE light will come on sometimes, pulse width jumps from ~2.6 to ~3.6ms, and then the AFR bounces around like crazy!  MUST be the issue.  Will check TPS sensor wiring next.
     
    -Carl
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