Quote:
Originally Posted by jpit
For those who have the high pitched noise coming from the engine compartment (not the ecu), the problem has been identified. The noise is
coming from the throttle bodies which are electrically controlled. I disconnected the harnesses and sure enough the noise stopped (also threw a code). Took this info to Nissan and he said that some of their other cars have this problem also.
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Interesting.....I noticed when I installed the Stillen grounding kit, that both TB's get a dedicated ground line...Maybe they know something Nissan does not??...
I thought about that for a minute and realized thet the TB's are mounted to a plastic mainifold and not grounded other than through their harness..I couldn't see where it would be more than a redundant ground, but maybe not..
No noise on mine BTW..