Low idle - Land Rovers Only

kkrover · 04-03-2007, 07:04 PM

Just had base idle adjusted and replaced stepper motor b/c of low idle & stumbling. Stumbling is gone, truck runs fine, but idle is about 7200 in nuetral and about 5300 in drive. Is that low? Seems repsonsive on inital acceleration. No more hesitation or stumbling. My question is about the stepper motor. Shouldn't it cause the idle to rise when the AC is turned on? My does not.

thanks

stevo-II · 04-04-2007, 06:49 AM

Well, I think you mean 720 in idle and 530 in drive....are you going by the dash tach? They are notoriously inaccurate. I think when the A/C is engages the stepper should accomidate it by adding more air, but in theory the idle should stay the same - ie the stepper motor just compensates to keep the idle the same....

Steve

Greg M · 04-04-2007, 10:28 AM

That's actually right around where it should be. My rover has a sticker on the left front of the engine compartment that gives the idle range and yours may too. Anyway, mine purrs like a kitten right below the 500 mark.

daway · 04-05-2007, 10:02 AM

my rrc is around the same as all of your rovers. when i 1st start her up she runs in N around 750-1000 (acouple of mins) and soon drops down to 720-750 in N. in D around the 500-550 or so. those #'s r from the dash tach.

04-03-2007, 07:04 PM	#1 (permalink)
kkrover Member Join Date: Jan 2007 Location: Charleston, SC Posts: 31 Gallery: 0	Low idle Just had base idle adjusted and replaced stepper motor b/c of low idle & stumbling. Stumbling is gone, truck runs fine, but idle is about 7200 in nuetral and about 5300 in drive. Is that low? Seems repsonsive on inital acceleration. No more hesitation or stumbling. My question is about the stepper motor. Shouldn't it cause the idle to rise when the AC is turned on? My does not. thanks __________________ KKROVER 95 Range Rover SWB 99 Disco II SE

04-04-2007, 06:49 AM	#2 (permalink)
stevo-II WWTSD? (what would Tony Soprano do?) Join Date: Jun 2006 Posts: 116 Gallery: 0	Well, I think you mean 720 in idle and 530 in drive....are you going by the dash tach? They are notoriously inaccurate. I think when the A/C is engages the stepper should accomidate it by adding more air, but in theory the idle should stay the same - ie the stepper motor just compensates to keep the idle the same.... Steve __________________ 2001 D2 -The Stevo-II 1992 RRC-The Stevo-I

04-04-2007, 10:28 AM	#3 (permalink)
Greg M Senior Member Join Date: Jan 2006 Location: Boise ID Posts: 219 Gallery: 0	That's actually right around where it should be. My rover has a sticker on the left front of the engine compartment that gives the idle range and yours may too. Anyway, mine purrs like a kitten right below the 500 mark. __________________ Greg M 1987 RRC Rovers haven't made it to the far reaches of the Earth worrying about warning lights.

04-05-2007, 10:02 AM	#4 (permalink)
daway Senior Member Join Date: Apr 2006 Location: St. Croix Valley, MN Posts: 1,300 Gallery: 0	my rrc is around the same as all of your rovers. when i 1st start her up she runs in N around 750-1000 (acouple of mins) and soon drops down to 720-750 in N. in D around the 500-550 or so. those #'s r from the dash tach. __________________ 2001 X5 3.0i "dodi" 1993 RRC, county LWB "bertha" 1991 RRC (dad's), parting out (email me or check out the link below) myroverworld

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