Thread: Denso Window Motors, Warning - Don't use with Jaguars !
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Unread 25-05-2010, 08:29
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Re: Denso Window Motors, Warning - Don't use with Jaguars !
We changed the tan jags to black jags with coast last night and it still happens. If I catch it as soon as the motor locks and pull the PWM cable and reinsert the motor functions. With the black jags once a motor locks it heats up faster with the black jags. < than a minute till the PTC resistance goes high. It heated slower with tan jags. We will install victors Wednesday night and see if victors are the answer. I took apart a spare window motor and there are 2 chokes and 2 caps in addition to the PTC. We could short the PTC now that it is off season but will do the victors to test. If the victors work then there has to be some weird resonance setting up between the filters, PTC and the jags frequency causing the PTC to heat. If the victors work then the jags will always be suspect with emi filtered and PTC protected motors. Maybe this is one reason IFI never went above 2000 HZ switching frequency.