16-04-2017, 09:50 AM
It seems like the diesel injector pulses on an early 2012 Isuzu D-Max TwinCab is the major source of noise when the engine is running and I am wondering if anyone has tried to quieten one of these beasts. On 7MHz with a helical at the back of the tub, the pulse noise is around S9+10. I have not yet done much playing around with Noise Blanker, bonding the bonnet to body etc.. but someone may have already achieved results along this route. Radio is an IC-706MK2G with remoted head, in-line LDG autotuner to help the matching off the resonant frequencies of the various whips used.
I also have an S7 broadband noise even with the engine off and I suspect that it is probably the ECU - but I haven't pulled fuses in the engine compartment as yet to see if one will stop that noise. I have pulled all of the passenger compartment fuses without any change.
Vehicle is a 4JJ1 series 3.0L diesel.... & shielding of the injector leads is probably not easily done.
Anybody got any known fixes ??
73 Doug VK4ADC
I also have an S7 broadband noise even with the engine off and I suspect that it is probably the ECU - but I haven't pulled fuses in the engine compartment as yet to see if one will stop that noise. I have pulled all of the passenger compartment fuses without any change.
Vehicle is a 4JJ1 series 3.0L diesel.... & shielding of the injector leads is probably not easily done.
Anybody got any known fixes ??
73 Doug VK4ADC
Doug VK4ADC @ QG62LG51
http://www.vk4adc.com
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http://www.vk4adc.com
This Forum is only going to be as interesting as the posts it contains.
If you have a comment or question, post it as it may trigger or answer the query in someone else's mind.