My 1999 has an idle problem. When the car is standing still, it seems to idle quietly until about 20-30 seconds later when the car seems to have a hard vibration hiccup. It continues to do that when the car is standing still. The acceleration is fine. I recently had all ignition coils replaced with oem and new NGK double platinum spark plugs. I've been driving between Jersey & Northern Virginia for the past couple of weeks. About 500 miles r/t. The car is not throwing any codes.

What could be the problem? Perhaps dirty air filter? Clogged fuel line? Ignition problem?

 

Mine is having a similar problem but threw codes for the fuel trim. I am taking it to the dealership hopefully this weekend to service the fuel injectors with their machine.

 

I had the same problem I know exactly what your talking about. You have to replace one of your coil packs. I got all of em on here for a good price, replaced them all and now that hiccup is gone. good luck

 

+1 to coil pack issue......any relation to ShocknAwe?

 

Booths,

I replaced all 6 coil packs with new OEM ignition coils I received from the dealer with new NGK Dble Plat Spark Plugs.

Could it be something else? Maybe one of the new coils is bad?

No relation to ShocknAwe, although I am the original....

 

So no chupersharger plans mang???

J/K

I've had this in my '99 for ages, I've given up on it after replacing damn near everything in the car.

Food for thought damn near every nissan V6 does when they've aged.

 

I second this. I've also had a small idle hiccup that I've given up on. I think it's just because the engine has 260,000+ miles on it. I'd expect a hiccup or 2 from that kinda mileage.