Go Back   Team-BHP > Under the Hood > Technical Stuff


Reply
 
Thread Tools Search this Thread
Old 5th July 2008, 21:15   #1
Senior - BHPian
 
m4ugr8's Avatar
 
Join Date: Jul 2007
Location: New Delhi
Posts: 1,291
Thanked: 123 Times
Default Strange Idle RPM on Swift

Today i had Given my Swift for a regular 30,000 KM servicing at Apra Auto, Okhla. When i went to take the car in the evening i noticed that when I start the Engine, The idle RPM had gone upto 2000 RPM, And when i switch on the AC it moves in the region of 1500-1800 RPM.

This is quite strange as i had given the car for servicing and the problem arose after that. After schecking with my service advisor, He told me there is some issue with your Air Filter I have a Green Filter in My car!!!

What should i do??? He has called me again tomorrow morning!!! While moving the RPM is fine but as soon as I press the Clutch the IDLE RPM again goes back to the region of 2000!!!
m4ugr8 is offline   Reply With Quote
Old 5th July 2008, 21:32   #2
ECM
BHPian
 
ECM's Avatar
 
Join Date: May 2006
Location: Somewhere
Posts: 221
Thanked: 6 Times
Default

May be some moisture issue after servicing,do post the diagnosis once you get car to back,good luck in advance.
ECM is offline   Reply With Quote
Old 5th July 2008, 21:43   #3
Senior - BHPian
 
gemithomas's Avatar
 
Join Date: Jan 2007
Location: Trivandrum
Posts: 2,364
Thanked: 136 Times
Default

dont think the green filter could cause this. ASk them to check the lamda/oxygen sensor.
gemithomas is offline   Reply With Quote
Old 7th July 2008, 22:31   #4
BHPian
 
abhik's Avatar
 
Join Date: Aug 2007
Location: New Delhi
Posts: 848
Thanked: 8 Times
Default

Get the TPS sensor and throttle body cleaned. Should solve the problem but do let us know what happened?
abhik is offline   Reply With Quote
Old 10th January 2009, 17:27   #5
BHPian
 
adi99's Avatar
 
Join Date: May 2007
Location: Bangalore
Posts: 274
Thanked: 2 Times
Default

Guys, I don't want to start a new thread so I am writing it here. During the last service, I complained about pickup drop in my swift (my swift refused to cross 100 kmph even in express highways). The man who test drove it told me that it will be all ok when the valve tappet is adjusted. Today I see the RPM do not cross 5K no matter how hard you press it in idle. Here I am not pressing the clutch at all. Even the accelerator is feeling a bit heavy. What can be the problem?
adi99 is offline   Reply With Quote
Old 10th January 2009, 17:34   #6
Senior - BHPian
 
amit_mechengg's Avatar
 
Join Date: Dec 2007
Location: Pune
Posts: 2,406
Thanked: 1,538 Times
Default

Quote:
Originally Posted by adi99 View Post
Guys, I don't want to start a new thread so I am writing it here. During the last service, I complained about pickup drop in my swift (my swift refused to cross 100 kmph even in express highways). The man who test drove it told me that it will be all ok when the valve tappet is adjusted. Today I see the RPM do not cross 5K no matter how hard you press it in idle. Here I am not pressing the clutch at all. Even the accelerator is feeling a bit heavy. What can be the problem?
Did he set the valve tappet clearance? the same thing happened on my alto. the valves were overtightened. valve setting should be done on cold engine for more accuracy.
amit_mechengg is offline   Reply With Quote
Old 10th January 2009, 17:37   #7
Senior - BHPian
 
vikram_d's Avatar
 
Join Date: Jul 2006
Location: Bangalore
Posts: 2,380
Thanked: 936 Times
Default

Dont rev it to 5000 rpm on idle. While driving, see what RPM the rev limiter is kicking in. I have doubts on the spark plugs.
vikram_d is offline   Reply With Quote
Old 10th January 2009, 18:13   #8
BHPian
 
adi99's Avatar
 
Join Date: May 2007
Location: Bangalore
Posts: 274
Thanked: 2 Times
Default

Quote:
Originally Posted by amit_mechengg View Post
Did he set the valve tappet clearance? the same thing happened on my alto. the valves were overtightened. valve setting should be done on cold engine for more accuracy.
Hello Amit, when I went to take the delivery, all he said was it was too tight and now its ok. Should I ask him for any more info on it? And yes, it was done on cold engine. The car was kept overnight there (Mandovi Motors, Blore)

Quote:
Originally Posted by vikram_d View Post
Dont rev it to 5000 rpm on idle. While driving, see what RPM the rev limiter is kicking in. I have doubts on the spark plugs.
Hello Vikram, I tried it now. In the second gear, max I can push it to 50kmph and it does not go so easily and fast too. Its like the car is saying "enough man, I cant" ! :-(
adi99 is offline   Reply With Quote
Old 10th January 2009, 19:20   #9
BHPian
 
m-hawk's Avatar
 
Join Date: Feb 2008
Location: mumbai
Posts: 217
Thanked: 8 Times
Default

Quote:
Originally Posted by abhik View Post
Get the TPS sensor and throttle body cleaned. Should solve the problem but do let us know what happened?
Throttle body cleaning is adviced very easily although the authorised service centre s (toyota honda ) never encourage it i wonder why ?
Any experience about it getting it from out done what exactly is done in it ?
Regards
SaaJan
m-hawk is online now   Reply With Quote
Old 11th January 2009, 02:01   #10
BHPian
 
ask77's Avatar
 
Join Date: Nov 2008
Location: Agra
Posts: 143
Thanked: 2 Times
Default

Quote:
Originally Posted by m-hawk View Post
Throttle body cleaning is adviced very easily although the authorised service centre s (toyota honda ) never encourage it i wonder why ?
Any experience about it getting it from out done what exactly is done in it ?
Regards
SaaJan
Throttle body cleaning and intake manifold cleaning should only be done by experienced people since it is a delicate job in mpfi vehicles and requires handling of precision components. I personally do not recommend such cleanings unless specifically indicated. Also keeping your air filter clean and getting the car serviced regularly as well as using good clean fuel should be enough to prevent fouling of throttle body and intake manifold.
ask77 is offline   Reply With Quote
Old 11th January 2009, 08:20   #11
Awaiting Email Confirmation
 
Join Date: Jun 2005
Location: ERNAKULAM
Posts: 947
Thanked: 317 Times
Default Two paths to the problem.

Quote:
Originally Posted by m4ugr8 View Post
Today i had Given my Swift for a regular 30,000 KM servicing at Apra Auto, Okhla. When i went to take the car in the evening i noticed that when I start the Engine, The idle RPM had gone upto 2000 RPM, And when i switch on the AC it moves in the region of 1500-1800 RPM.

This is quite strange as i had given the car for servicing and the problem arose after that. After schecking with my service advisor, He told me there is some issue with your Air Filter I have a Green Filter in My car!!!

What should i do??? He has called me again tomorrow morning!!! While moving the RPM is fine but as soon as I press the Clutch the IDLE RPM again goes back to the region of 2000!!!
The problem could have cropped up because he changed your perfectly normal throttle body for a defective one from his friends vehicle. He then increased the idling rpm( because the Idling stepper motor was faulty) by rotating the screw which is set at factory and never to be touched outside of the factory.

The other possibilty is fouling up of one of the sensors not including the rpm sensor and also possible clogging of the PCV valve.

Greens have nothing to do with the problem but the service guys are going to find it the culprit even if you complain of a rear suspension problem.

Last edited by drpullockaran : 11th January 2009 at 08:24.
drpullockaran is offline   Reply With Quote
Old 11th January 2009, 12:41   #12
BHPian
 
adi99's Avatar
 
Join Date: May 2007
Location: Bangalore
Posts: 274
Thanked: 2 Times
Default

Quote:
Originally Posted by drpullockaran View Post
The problem could have cropped up because he changed your perfectly normal throttle body for a defective one from his friends vehicle. He then increased the idling rpm( because the Idling stepper motor was faulty) by rotating the screw which is set at factory and never to be touched outside of the factory.

The other possibilty is fouling up of one of the sensors not including the rpm sensor and also possible clogging of the PCV valve.

Greens have nothing to do with the problem but the service guys are going to find it the culprit even if you complain of a rear suspension problem.
drpullockaran, M4ugr8's problem was solved long ago. He started this thread in July. I did a continue to this thread yesterday with slightly a different problem. See below

Quote:
Originally Posted by adi99 View Post
Guys, I don't want to start a new thread so I am writing it here. During the last service, I complained about pickup drop in my swift (my swift refused to cross 100 kmph even in express highways). The man who test drove it told me that it will be all ok when the valve tappet is adjusted. Today I see the RPM do not cross 5K no matter how hard you press it in idle. Here I am not pressing the clutch at all. Even the accelerator is feeling a bit heavy. What can be the problem?
When Vikram_d asked to drive and see the rev limiter, my car refuses to go beyond 55kmph in 2nd gear and at this time the RPM was between 3K to 3.5K. Both the speed and RPM not moving above this.
adi99 is offline   Reply With Quote
Old 11th January 2009, 13:06   #13
Senior - BHPian
 
amit_mechengg's Avatar
 
Join Date: Dec 2007
Location: Pune
Posts: 2,406
Thanked: 1,538 Times
Default

adi whats the max speed your car is doing on a long stretch in the top gear and at what RPM ?
amit_mechengg is offline   Reply With Quote
Old 11th January 2009, 13:22   #14
BHPian
 
adi99's Avatar
 
Join Date: May 2007
Location: Bangalore
Posts: 274
Thanked: 2 Times
Default

Quote:
Originally Posted by amit_mechengg View Post
adi whats the max speed your car is doing on a long stretch in the top gear and at what RPM ?
Amit, 100 kmph with full throttle. Sorry I did not keep an eye on RPM. Taking this into consideration, the MASS recommended valve tappet adjustment. I have to try and find some highways to check the RPM on high speeds. But I am highly dissappointed with the 2nd gear speeds (only can reach 55kmph with full throttle)
adi99 is offline   Reply With Quote
Old 11th January 2009, 13:37   #15
Senior - BHPian
 
amit_mechengg's Avatar
 
Join Date: Dec 2007
Location: Pune
Posts: 2,406
Thanked: 1,538 Times
Default

Quote:
Originally Posted by adi99 View Post
Amit, 100 kmph with full throttle. Sorry I did not keep an eye on RPM. Taking this into consideration, the MASS recommended valve tappet adjustment. I have to try and find some highways to check the RPM on high speeds. But I am highly dissappointed with the 2nd gear speeds (only can reach 55kmph with full throttle)
100 kmph is definitely too low on swift. different people in MASS will tell you different things to be done on the car. how much KMS have you done on the ODO? check the compression of all the cylinders. if compression in any cylinder is low then you need to do the valve setting.also check the health and gaps of the sparkplugs. i hope the airfilter is not clogged.
did they check the operation of the butterfly valve on the throttle body? make sure its not sticking anywhere and opens fully on full throttle. accelerator feeling hard is coz of butterfly valve.

Can you give a list of works done on your car.

Last edited by amit_mechengg : 11th January 2009 at 13:39.
amit_mechengg is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Swift VXi - What is the idle rpm? clevermax Technical Stuff 8 3rd March 2008 08:58
RPM doesn't return to idle soon dj_2006 Technical Stuff 24 25th July 2007 20:20
rpm below idle rpm tortoise Technical Stuff 12 2nd April 2007 00:51
Baleno Idle Rpm shobhit15 The Indian Car Scene 13 24th October 2005 22:40
How to reduce the Idle RPM Suryam Modifications & Accessories 4 19th February 2005 17:16


All times are GMT +5.5. The time now is 17:19.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks