Lightweight flywheels

georryan · Post by **georryan** » Fri Apr 14, 2006 6:51 am

Hey, you guys that have them, did your car idle funny for a while after you put them in? Specifically at stop lights and just sitting idle?

My car idles pretty solid at 750 rpms, but randomly and without much reason it will drop to 650 or even 575 for a second. It will lope down there for a short time and then pop back up again. Is this something I should expect and just realize the ecu will learn around it eventually?

-Ryan

Post by **DLC** » Fri Apr 14, 2006 6:58 am

Both mine, Exedy, acted completely normal on the 93 Turbo and the 00. IF you haven't already, try resetting the ECU, maybe some sensor is confused. I had a similar problem after an engine wash, and a CEL, but an ECU reset cleared up both the CEL and funny idle.

georryan · Post by **georryan** » Fri Apr 14, 2006 7:29 am

Hmm. Well I'm not throwing any codes. I had a knock sensor issue, but I fixed that already, and yes, I do believe the ecu reset. At least I think it did.

gt2.5turbo · Post by **gt2.5turbo** » Fri Apr 14, 2006 8:42 am

hmm... so what is our car suppose to idle at? cause once warm mine def sits at like 300-400 at lights and such

Splinter · Post by **Splinter** » Fri Apr 14, 2006 4:54 pm

gt2.5turbo wrote:hmm... so what is our car suppose to idle at? cause once warm mine def sits at like 300-400 at lights and such

Are you sure?

The tach doesnt go that low.

dscoobydoo · Post by **dscoobydoo** » Fri Apr 14, 2006 5:15 pm

Mine still idles at around 650-750 after the lightweight flywheel. The tach actually reads as it being lower than it really is.

georryan · Post by **georryan** » Fri Apr 14, 2006 5:51 pm

I got my numbers from the vrg3 scan tool.

I'll have to check the plugs and make sure they are gapped and in tight enough. I'm betting it is a fuel issue, and it could be that the plugs aren't grounding well enough.

Post by **Legacy777** » Fri Apr 14, 2006 6:57 pm

Mine idled a little funky, but I attribute that to other things. If I ever get around to installing that new IAC valve I got from Phil, I'm hoping my idle issues will go away.

georryan · Post by **georryan** » Fri Apr 14, 2006 7:17 pm

IAC valve. You know, that could be a contributing factor as well, but I would figure that would be more of an idle going too high and dropping back. This is the opposite.

Post by **DLC** » Sat Apr 15, 2006 2:39 am

Well, just as a reference, my 00 2.5 with current mods idles at around 700, by the tach, which should be pretty accurate in this newer car.

scuzzy · Post by **scuzzy** » Sat Apr 15, 2006 4:00 am

yeah, for future reference those of us using the stock rpm gauge - the second lowest most marker is the 500rpm mark (the one nearest the bottom marker)

stall speed on our engines is somewhere around 300-400 rpms

gt2.5turbo · Post by **gt2.5turbo** » Sat Apr 15, 2006 5:30 am

scuzzy wrote:yeah, for future reference those of us using the stock rpm gauge - the second lowest most marker is the 500rpm mark (the one nearest the bottom marker)

good to know makes a lot more sense

georryan · Post by **georryan** » Sat Apr 15, 2006 9:04 pm

Ok, I'm moving my dicussion to another topic since i don't think it is related to the lightweight flywheel.

I've moved it to this post here:

http://bbs.legacycentral.org/viewtopic. ... 440#171440

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Lightweight flywheels

Lightweight flywheels