Idle Speed Windings Burn Out - Nissan A33

[nswnotill]

My daily driver is an 11/01 Nissan Maxima S A33 with a VQ30DE 3 litre motor.

I purchased it S/H when it had 85,000 km on it. Overall it is a satisfactory unit.

However at 118,000 km the idle speed assembly windings burnt out, along with the idle speed controller on the ECU. When this happened the motor idled at around 1800 rpm with a lot of surging. After a lot of searching the trouble was found and the damaged parts replaced.

Now at 125,000 it has done the same thing again! Anyone have any ideas on what could be the cause? I run it partly on 92RON fuel and also on 95RON. My mechanic says the lower grade fuel should not be making any difference. What do you guys think?

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[toffy]

sounds like something is earthing that shouldnt, id suggest taking it to a sparkie

[nswnotill]

sounds like something is earthing that shouldnt, id suggest taking it to a sparkie

Thanks for that- I will follow up that lead. In the meantime if any other members have had the same experience and details of how they solved the problem I would be pleased to hear from them.

[someonestolecc]

Hehe 'satisfactory unit', 'follow up that lead' - are you in sales !?! lol

Did you ever get the reason why the unit failed or was it just assumed it died from old age?

[nswnotill]

Maybe I'm biassed, but I think it is a cut above the usual Falcodore.

Sure maybe the first one failed due to old age- but the second 7,000 km later? That's the challenge to diagnose the trouble.

Edited December 23, 2006 by nswnotill