Idle rpm???? - 2003-04 Mach 1 Registry Owners Club

rygi23 · 03-28-2011, 08:32 PM

I've noticed for a while that she was idling low, 500-600. Well, while adjusting my WOT fuel at the track I noticed an asterisk by the "idle rpm" setting in my diablo tuner, indicating that it's been changed. I have no clue how this could've happened. Sure enough, it was set at 554, down from stock 704. The tuner rpm settings go in increments of 50 so it was 3 notches off. I set it back to stock but was thinking that lower idle rpm would be a little less gas and wear over the long term. So is it okay to lower it back?? Thx in advance for any input.

blown03Mach1 · 03-29-2011, 09:42 AM

I had dropped my idle a long time ago, but occasionally I would experience a stall so I raised it back up. Other then that and possibly low vacuum affecting the power brakes you should be fine.

311-420 · 03-29-2011, 02:45 PM

Mine used to idle at 700 when it had the factory tune. After the diablow canned tune it went up to 800.

Not the answer to your question, but just thought I'd share.

04azuremach · 03-29-2011, 03:02 PM

Put it back to stock. Lower idles risk it stalling out more often... especially when coming to a stop. You could have your car stall out when in the shut down part of the track. Don't really want to lose power steering and brakes when doing 100+ LOL

rygi23 · 03-30-2011, 08:35 PM

Quote:

Originally Posted by 04azuremach

Put it back to stock. Lower idles risk it stalling out more often... especially when coming to a stop. You could have your car stall out when in the shut down part of the track. Don't really want to lose power steering and brakes when doing 100+ LOL

It's been low for a while and havent' stalled once because I'm always in gear unless stop or close to there. I coast in 5th, instead of putting it in neutral, in the shutdown area after stalling once a long time ago. The std. setting in my Diablo is 704, I just keep it there.

bmeeks · 03-31-2011, 12:07 AM

i dont have any tunes or anything in my mach and out of nowhere the idle dropped to about 500-550 or so over the last couple months. used to be in the 700 range like it should be. it's still running strong, so no idea what happened there

SHAKEN · 03-31-2011, 05:41 AM

Quote:

Originally Posted by rygi23

I've noticed for a while that she was idling low, 500-600. Well, while adjusting my WOT fuel at the track I noticed an asterisk by the "idle rpm" setting in my diablo tuner, indicating that it's been changed. I have no clue how this could've happened. Sure enough, it was set at 554, down from stock 704. The tuner rpm settings go in increments of 50 so it was 3 notches off. I set it back to stock but was thinking that lower idle rpm would be a little less gas and wear over the long term. So is it okay to lower it back?? Thx in advance for any input.

I thought stock was 750 or at least what mine was with 7r50d. When I received my custom tune from Kmac based off the 9r07b crom it was set at 704 and I thought that was low so I asked him to add the 750 which he did and have not looked back.

Fenixfire · 03-31-2011, 10:46 AM

Mine is set to 800, but its not stock......obviously

wutang61 · 04-01-2011, 01:42 PM

mine is also set to 800 via custom tune. stock longblock.

now that i think about it a slightly lower idle (700-750) would be a nice change.

03-28-2011, 08:32 PM	#1
rygi23 Registered User Join Date: Mar 2008 Location: Cobb Island, MD Posts: 587	Idle rpm???? I've noticed for a while that she was idling low, 500-600. Well, while adjusting my WOT fuel at the track I noticed an asterisk by the "idle rpm" setting in my diablo tuner, indicating that it's been changed. I have no clue how this could've happened. Sure enough, it was set at 554, down from stock 704. The tuner rpm settings go in increments of 50 so it was 3 notches off. I set it back to stock but was thinking that lower idle rpm would be a little less gas and wear over the long term. So is it okay to lower it back?? Thx in advance for any input. __________________ Full SLP, JLT, Diablo, 4.10s, DRs 1/8.......7.74 @ 90 1/4......12.09 @ 113.5

03-29-2011, 09:42 AM	#2
blown03Mach1 8LB YNER Join Date: Mar 2005 Location: Tampa Posts: 5,661	Re: Idle rpm???? I had dropped my idle a long time ago, but occasionally I would experience a stall so I raised it back up. Other then that and possibly low vacuum affecting the power brakes you should be fine. __________________ Just because you're winnin' Don't mean you're the lucky ones TR 2003 (Jezebel) sold Mar 12...

03-29-2011, 02:45 PM	#3
311-420 Can't be bridled Join Date: Sep 2007 Location: Texas Posts: 7,006	Re: Idle rpm???? Mine used to idle at 700 when it had the factory tune. After the diablow canned tune it went up to 800. Not the answer to your question, but just thought I'd share. __________________ 2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁

03-29-2011, 03:02 PM	#4
04azuremach Loud, fast and fun Join Date: Apr 2004 Location: Owning Ricers at MIR Posts: 7,864	Re: Idle rpm???? Put it back to stock. Lower idles risk it stalling out more often... especially when coming to a stop. You could have your car stall out when in the shut down part of the track. Don't really want to lose power steering and brakes when doing 100+ LOL

03-31-2011, 12:07 AM	#6
bmeeks 1 of 124 Join Date: May 2009 Location: PG, Murrland Posts: 198	Re: Idle rpm???? i dont have any tunes or anything in my mach and out of nowhere the idle dropped to about 500-550 or so over the last couple months. used to be in the 700 range like it should be. it's still running strong, so no idea what happened there __________________ 2004 Competition Orange Mach 1 143883 IMSHAKN

03-31-2011, 10:46 AM	#8
Fenixfire Its stock....No really! Join Date: Jul 2005 Location: Albuquerque, NM Posts: 4,433	Re: Idle rpm???? Mine is set to 800, but its not stock......obviously __________________ 2003 Azure Blue Mach 1 5spd w/ IUP Mods: Lots of new stuff coming.....stay tuned

04-01-2011, 01:42 PM	#9
wutang61 CAT MASTA! Join Date: Jun 2007 Location: Vero Beach, Florida Posts: 3,406	Re: Idle rpm???? mine is also set to 800 via custom tune. stock longblock. now that i think about it a slightly lower idle (700-750) would be a nice change. __________________ 04' Torched *6-speed* Build Date: 02/25/2004 Ported Eaton @7psi Viper T-56 Built 8.8,4.10's 441/402

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