RX-8 guys, help! - TriStateTuners.com :: Home of Tristate Auto Enthusiast

rickeo · 08-09-2011, 06:09 PM

2004 GT Manual
45k Miles
92/93 Octane always
Conventional Castrol oil changes every 3k miles.
AFE Shift Kit
Mazdaspeed dual-canister exhaust
Everything else is stock

A couple weeks ago, I came to a stop at a light and noticed my idle was fluctuating from ~1000 to ~1600 back and forth. I could get it to stop (sometimes) by giving it a few good revs.

This only seems to happen every so often; definitely not every time I drive my car.

The higher revs i'm doing in attempts to get it to go back to normal. ;) Any idea's? It doesn't seem to be negatively affecting anything that I can tell.

http://www.youtube.com/watch?v=LWUSp0fUBYQ

I posted over at rx8club.com of course... http://www.rx8club.com/showthread.php?t=221410

xdrift0rx · 08-09-2011, 11:31 PM

are all of your plugs firing? the way its revving makes it sound like the engine internals are okay...

there are a couple things that the first few years of the rx8 had that were weird maintenance items. coil packs were one of them.

it could be a vacuum leak, though doubtful.

oil pressure good? air filter good? does the power delivery feel any different? no CEL?

rickeo · 08-09-2011, 11:32 PM

Turns out its just the neutral switch going... Thanks though!

08-09-2011, 06:09 PM	#1
rickeo Tri-State Addict Join Date: Oct 2006 Member #2785 My Ride: '04 Mazda RX-8 GT iTrader: (2)	RX-8 guys, help! 2004 GT Manual 45k Miles 92/93 Octane always Conventional Castrol oil changes every 3k miles. AFE Shift Kit Mazdaspeed dual-canister exhaust Everything else is stock A couple weeks ago, I came to a stop at a light and noticed my idle was fluctuating from ~1000 to ~1600 back and forth. I could get it to stop (sometimes) by giving it a few good revs. This only seems to happen every so often; definitely not every time I drive my car. The higher revs i'm doing in attempts to get it to go back to normal. ;) Any idea's? It doesn't seem to be negatively affecting anything that I can tell. http://www.youtube.com/watch?v=LWUSp0fUBYQ I posted over at rx8club.com of course... http://www.rx8club.com/showthread.php?t=221410 __________________ “If everything seems under control, you're not going fast enough.” ― Mario Andretti

08-09-2011, 11:32 PM	#3
rickeo Tri-State Addict Join Date: Oct 2006 Member #2785 My Ride: '04 Mazda RX-8 GT iTrader: (2)	Turns out its just the neutral switch going... Thanks though! __________________ “If everything seems under control, you're not going fast enough.” ― Mario Andretti

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08-09-2011, 11:31 PM	#2
xdrift0rx Tri-State Aficionado Join Date: Oct 2010 Location: Wilmington, DE Member #17727 My Ride: 1987 Mazda RX-7 iTrader: (1)	are all of your plugs firing? the way its revving makes it sound like the engine internals are okay... there are a couple things that the first few years of the rx8 had that were weird maintenance items. coil packs were one of them. it could be a vacuum leak, though doubtful. oil pressure good? air filter good? does the power delivery feel any different? no CEL?