RPM doesn't return to idle soon

1100D · 4th June 2007, 20:38

Quote:

Originally Posted by AvinashKeezh

I have this problem with my 2005 1.6 Ikon. It's been like this for quite some time now.
Start engine -> 2000 rpm, it keeps up there for a long time.. i asked the authorised guys, and they say it's because of petrol from diff vendors... i don't know how true that could be... haven't been able to spend time on it all this while. thought i'd check out the forum, but looks like we don't have this problem on a large scale. I tried the mech's advice, filling almost 3-4 tank fulls from the same vendor (SHELL in blore). and haven't been able to find any difference. in fact its like the car has a mind of it's own, it comes back to normal without much fanfare and goes up all of a sudden too..
anybody with an idea on what could be the problem..
shall try the battery disconnect option once, and post asap...
but in the meanwhile if someone's had this prob, and had managed to get it solved, please do post..

I have faced this problem, each time it was after the service, mainly the 3M throttle body cleaning they use confuses the ECU. Battery disconnection (5-10 mins) has always solved it. But each time one had to pre-set the radio and clock!

mclaren1885 · 4th June 2007, 20:40

Check the throttle cable. Or it could be a case of an erratic cam position sensor?

benbsb29 · 5th June 2007, 12:17

Quote:

Originally Posted by 1100D

I have faced this problem, each time it was after the service, mainly the 3M throttle body cleaning they use confuses the ECU. Battery disconnection (5-10 mins) has always solved it. But each time one had to pre-set the radio and clock!

Interestingly, the same has been noticed on my Ikon after the second free service at 6 months (8000 kms). It did get highly disturbing in between, but less now, or maybe i have adjusted my driving to it.

suren181 · 5th June 2007, 14:20

This is a common phenomenon on my car when I pour in petrol from the pumps that may be filling in inferior quality fuel. The next time you tank her up ensure she's as close to empty as possible and then pour in fuel from a reliable pump. This has been the solution to my santro's engine rpm problems.

Deepz · 5th June 2007, 22:19

suren181 has a point, bad fuel might actually be the problem..

nispatel · 20th June 2007, 20:12

Now I switched from Premium BP / Ordinaary BP fuel to Indian Oil (either premium or non premium) one and RPM problem has almost gone on my Santro Xing! May be useful to other BHPeans.

cadaver_prad · 20th June 2007, 21:25

I too had a similar problem in my Ikon 1.6..
When i release the throttle at 2000rpm, It increases to 3000rpm stays there for 1-2 secs and then goes down... This used to happen as soon as i start the vehicle also. But seems like it has sorted itself out now... Guys any idea why this used to happen??

kaynmantis · 25th July 2007, 15:29

My Ikon 1.6 has similar problem. Its very irritating driving in this condition. Have disconnected battery (20mts) to preset ECU, but it did not help. Cable does to seems to be the problem as some have suggested. Will have throttle body cleaned first and if that does not work, will try different fuel. Currently I use regular unladed petrol.

Any help will be appreciated.

Jaggu · 25th July 2007, 19:58

iKON issue was reported earlier by someone and it turned out to be some idle adjustment (vacum tube or something, dont remember) under the dash near to foot pedals, 5 mts job.

rks · 25th July 2007, 20:20

Quote:

Originally Posted by nispatel

When I switched to a new Santro 8 months back from Carb M800 and carb Esteem, I found it very annonying that it take a while for RPM to come down even after releasing accelerator and fully depressing clutch. This was ending up as not so smooth gear shift.

I had exactly the same experience when I switched from Carb M800 to Santro in 2000 (Advaith Hyundai, Bangalore). The gear shift takes longer in Santro as I have to wait for the revs to drop. Never treated this as a problem, simply assumed it to be normal of MPFI engines.

4th June 2007, 20:40	#17
mclaren1885 BANNED Join Date: Jul 2005 Location: Bangalore (the city of modded cars) !! Posts: 4,820 Thanked: 45 Times View My Garage Infractions: 0/1 (10)	Check the throttle cable. Or it could be a case of an erratic cam position sensor?
	() Thanks

5th June 2007, 14:20	#19
suren181 BHPian Join Date: Aug 2006 Location: Hyderabad Posts: 850 Thanked: 11 Times View My Garage	This is a common phenomenon on my car when I pour in petrol from the pumps that may be filling in inferior quality fuel. The next time you tank her up ensure she's as close to empty as possible and then pour in fuel from a reliable pump. This has been the solution to my santro's engine rpm problems. Last edited by suren181 : 5th June 2007 at 14:23.
	() Thanks

5th June 2007, 22:19	#20
Deepz BHPian Join Date: Jul 2006 Location: Jakarta(originally bombay) Posts: 98 Thanked: 2 Times	suren181 has a point, bad fuel might actually be the problem..
	() Thanks

20th June 2007, 20:12	#21
nispatel BHPian Join Date: Aug 2005 Location: Bangalore Posts: 97 Thanked: 0 Times View My Garage	Now I switched from Premium BP / Ordinaary BP fuel to Indian Oil (either premium or non premium) one and RPM problem has almost gone on my Santro Xing! May be useful to other BHPeans.
	() Thanks

20th June 2007, 21:25	#22
cadaver_prad BHPian Join Date: Dec 2006 Location: Bangalore Posts: 218 Thanked: 18 Times	I too had a similar problem in my Ikon 1.6.. When i release the throttle at 2000rpm, It increases to 3000rpm stays there for 1-2 secs and then goes down... This used to happen as soon as i start the vehicle also. But seems like it has sorted itself out now... Guys any idea why this used to happen??
	() Thanks

25th July 2007, 15:29	#23
kaynmantis BHPian Join Date: Jun 2007 Location: Mumbai Posts: 191 Thanked: 9 Times	RPM doesn't return to idle soon My Ikon 1.6 has similar problem. Its very irritating driving in this condition. Have disconnected battery (20mts) to preset ECU, but it did not help. Cable does to seems to be the problem as some have suggested. Will have throttle body cleaned first and if that does not work, will try different fuel. Currently I use regular unladed petrol. Any help will be appreciated.
	() Thanks

25th July 2007, 19:58	#24
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,216 Thanked: 15,912 Times	iKON issue was reported earlier by someone and it turned out to be some idle adjustment (vacum tube or something, dont remember) under the dash near to foot pedals, 5 mts job.
	() Thanks