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


Reply
 
Thread Tools Search this Thread
Old 25th April 2009, 16:01   #316
Senior - BHPian
 
trrk's Avatar
 
Join Date: Feb 2004
Location: Alleppey, Kerala
Posts: 2,113
Thanked: 9 Times
Default

Hi,

Quote:
Originally Posted by malgudi View Post
This does not happen when the AC is off. Without AC ON, The car would keep slowing & then stall. TASS says every indica behaves this way, which I feel is crap as the car did not have this problem for the first 3 years
The surge could happen if the compressor comes on at that time resulting in the FICD action of increasing the RPM from the idle one. Can't think of anything else.
trrk is offline   Reply With Quote
Old 25th April 2009, 16:31   #317
BHPian
 
Join Date: Apr 2006
Location: Mumbai
Posts: 319
Thanked: 157 Times
Unhappy

Quote:
Originally Posted by trrk View Post
Hi,
The surge could happen if the compressor comes on at that time resulting in the FICD action of increasing the RPM from the idle one. Can't think of anything else.
The problem is only when the compressor is on and while I am applying break till the car reaches stalling speed.
malgudi is online now   Reply With Quote
Old 27th April 2009, 19:23   #318
Senior - BHPian
 
trrk's Avatar
 
Join Date: Feb 2004
Location: Alleppey, Kerala
Posts: 2,113
Thanked: 9 Times
Default

Hi Junniaga,

Quote:
Originally Posted by junniaga View Post
acoustic dampener: seems interesting but can i have some pictures as the TATA stations here sure wouldnt have any idea that such thing exists
Quote:
Originally Posted by trrk View Post
Hi,
It comes fitted in the DLX version. Could not find any images so far.
Sorry.
I don't know whether you are still interested, but I found an image. This is a doc file with the image.

Engine cover.doc

Regards,
trrk is offline   Reply With Quote
Old 27th April 2009, 19:35   #319
Senior - BHPian
 
greenhorn's Avatar
 
Join Date: Apr 2007
Location: TN-14
Posts: 6,578
Thanked: 841 Times
Default

Name:  cover.jpg
Views: 6566
Size:  30.2 KB
is this what you guys are talking about ? got it off my user manual

Last edited by greenhorn : 27th April 2009 at 19:36.
greenhorn is online now   Reply With Quote
Old 28th April 2009, 10:12   #320
BHPian
 
Join Date: Jun 2007
Location: Delhi
Posts: 88
Thanked: 2 Times
Wink

Quote:
Originally Posted by deep_bang View Post
If the fan was ON permanantly, while the engine was heating up more and more, i would agree with the mechanic. But, here, if I understood right, the fan is OFF when the temp guage moves over the 50% mark - when it should normally have triggered ON.
If that is indeed the case, there is no way an engine repair can help in my opinion. Other experts can comment...
Yes, you got it right. This problem finally got resolved by again replacing the Thermostat switch. This time I replaced it with Minda make switch and it seems that it switch on the radiator fan at lower temps as a result of which AC is not tripping as temp needle always stays below half.

Thanks !
Sang is offline   Reply With Quote
Old 28th April 2009, 12:09   #321
Team-BHP Support
 
tsk1979's Avatar
 
Join Date: Feb 2005
Location: New Delhi
Posts: 22,656
Thanked: 15,005 Times
Default

Do this experiment.
Short the fan so that its always on and drive around and watch temp guage. If car does not overheat, it means that the fan is not starting on time.
This means the switch is faulty.
Thermostat switch should not keep blowing like this, unless there is some fault in the circuit. Do you also get frequent headlight bulb blow outs?
If so, check the alternator voltage. It may be spiking and messing up with electronic components.
In car with ECU usually the check engine light would warn of such problems, but in our vintage indica's its a little hard to diagnose.
Another problem could be blockage in coolant flow. If the coolant flow is not proper, it may not heat evenly, so you may have the temp guage and thermostat getting different readings.
For that take off the yellow cap(indica does not have separate radiator cap) and crank the engine. Water should gush out.
If it does not, its either some kind of blockage, or problem with water pump(extremely rare)
tsk1979 is offline   Reply With Quote
Old 29th April 2009, 09:12   #322
BHPian
 
Join Date: Jun 2007
Location: Delhi
Posts: 88
Thanked: 2 Times
Default

Quote:
Originally Posted by tsk1979 View Post
Do this experiment.
Short the fan so that its always on and drive around and watch temp guage. If car does not overheat, it means that the fan is not starting on time.
This means the switch is faulty.
Thermostat switch should not keep blowing like this, unless there is some fault in the circuit. Do you also get frequent headlight bulb blow outs?
If so, check the alternator voltage. It may be spiking and messing up with electronic components.
In car with ECU usually the check engine light would warn of such problems, but in our vintage indica's its a little hard to diagnose.
Another problem could be blockage in coolant flow. If the coolant flow is not proper, it may not heat evenly, so you may have the temp guage and thermostat getting different readings.
For that take off the yellow cap(indica does not have separate radiator cap) and crank the engine. Water should gush out.
If it does not, its either some kind of blockage, or problem with water pump(extremely rare)
Hi Tanveer,
Thanks for your advice. As I mentioned in my first post that Fan was getting on but only after temp needle reaching 20% higher from the center point, this used to result in AC tripping. Finally the problem is resolved after getting the Switch changed to Minda make as one of the electrician told me that Minda switch starts working at low temp which ensure that needle stays below half way mark. Last year also I got it replaced from the electrician in Sec-16, which was recommended by you in one of your Indica related post. As such I never had the problem of headlight blow outs, I know for sure that they have not been changed for last 2-3 years. I don't know what causes this Thermostat blow out every year but if it can be resolved by just change of this switch then I don't mind.

Thanks!
Sang is offline   Reply With Quote
Old 29th April 2009, 10:46   #323
Team-BHP Support
 
tsk1979's Avatar
 
Join Date: Feb 2005
Location: New Delhi
Posts: 22,656
Thanked: 15,005 Times
Default

So did you go to Imam? You can ask him why this switch is blowing out every ear. My last thermostat blowout switch was around 35K kms in 2004 timeframe. Its been 5 years and 75000kms after that, and the switch has not been replaced even once.
tsk1979 is offline   Reply With Quote
Old 29th April 2009, 11:23   #324
BHPian
 
Join Date: Jun 2007
Location: Delhi
Posts: 88
Thanked: 2 Times
Default

Quote:
Originally Posted by tsk1979 View Post
So did you go to Imam? You can ask him why this switch is blowing out every ear. My last thermostat blowout switch was around 35K kms in 2004 timeframe. Its been 5 years and 75000kms after that, and the switch has not been replaced even once.
Yes that is the person to whom I went last year. I had not asked him about the reason as He was pretty busy at that time. My office is in Sec-58, so I don't get much time to go to him during week days and I stay in Janak Puri so is not possible on weekends

I shall try to find some good electrician in my locality who should be able to identify the rootcause.
Sang is offline   Reply With Quote
Old 29th April 2009, 13:30   #325
Senior - BHPian
 
trrk's Avatar
 
Join Date: Feb 2004
Location: Alleppey, Kerala
Posts: 2,113
Thanked: 9 Times
Default

Hi,

I guess we were talking about that only!
trrk is offline   Reply With Quote
Old 3rd May 2009, 23:40   #326
Newbie
 
Join Date: Aug 2007
Location: Pune
Posts: 16
Thanked: 0 Times
Default

2004 Indica DLX, done 45,000 kms has some problems. Visiting TASC several times has not resolved these problems. Looking for suggestions from people with Indica experience:

1. Very poor pickup when the engine heats up. Pickup is managable (still little on the lower side) when the engine is cold. I can clearly experience the pick up going bad when the temperature indicator needle starts going towards middle mark. Radiator fan kicks in when the needle hits middle mark and the temp needle comes down towards left and the pickup improves. This whole poor pickup problem gets worse when the traffic starts crawling in a traffic jam. Car almost becomes undrivable after 15-20 mins of crawling in the jam. Poor pickup problem of this car has long history. This poor pickup problem started within 1.5 years of this car's life. Pandit auto in Pune got the diesel pump serviced under warranty. Everything ran perfectly for 1.5 years after that. Then the problem started again. BU Bhandari (Wakdewadi) Pune detected some bent fuel hose to be the problem. Replaced it and it was running fine for another 1.5 years. Now for quite some time I have this problem again. BU Bhandari Pune failed to fix the problem. Concorde Bangalore also failed to fix the problem.

2. Some weird shuddering of whole car at some speeds. Stock tyres were worn out at 35,000 kms and the steel rims were deformed slightly. Both TASC and road side mechanics suggested this problem may be because of bad tyres or the rims. Then I switched to alloys (Neo) and tubeless tyres (B250). This body shuddering starts as a mild shaking of car at low speed itself - at around 30 kmph or so. Gets worse between 60-65kmph - I feel as if whole car is going to fall apart. This problem dies down at speeds beyond 70kmph. Don't know whether it shows up again at a higher speed because I do not drive beyond 80-90kmph (don't have enough courage to risk my life on this Tata elephant). This is becoming a problem because I have tried wheel balancing 3-4 times in last 6 months - no use. After every balancing session I feel it is better. But the problem persists at a small scale immediately after balancing and progressively gets worse after around 1000 kms. Rims do not seem to be the problem. Do you suspect tyre runout? Suspension? Any other rotating mass that can go out of balance? Do you know some place in Pune where this can be fixed?

Any pointers to what may be wrong (rather, how to guide TASC guys to look in the right direction) is very much appreciated. Thanks in advance.
RaviH is offline   Reply With Quote
Old 4th May 2009, 13:34   #327
BHPian
 
nithinnarayanan's Avatar
 
Join Date: Oct 2007
Location: Bangalore Kannur Manipal
Posts: 237
Thanked: 5 Times
Default

Quote:
Originally Posted by RaviH View Post
2004 Indica DLX, done 45,000 kms has some problems. Visiting TASC several times has not resolved these problems. Looking for suggestions from people with Indica experience:

1. Very poor pickup when the engine heats up. Pickup is managable (still little on the lower side) when the engine is cold. I can clearly experience the pick up going bad when the temperature indicator needle starts going towards middle mark. Radiator fan kicks in when the needle hits middle mark and the temp needle comes down towards left and the pickup improves. This whole poor pickup problem gets worse when the traffic starts crawling in a traffic jam. Car almost becomes undrivable after 15-20 mins of crawling in the jam. Poor pickup problem of this car has long history. This poor pickup problem started within 1.5 years of this car's life. Pandit auto in Pune got the diesel pump serviced under warranty. Everything ran perfectly for 1.5 years after that. Then the problem started again. BU Bhandari (Wakdewadi) Pune detected some bent fuel hose to be the problem. Replaced it and it was running fine for another 1.5 years. Now for quite some time I have this problem again. BU Bhandari Pune failed to fix the problem. Concorde Bangalore also failed to fix the problem.

2. Some weird shuddering of whole car at some speeds. Stock tyres were worn out at 35,000 kms and the steel rims were deformed slightly. Both TASC and road side mechanics suggested this problem may be because of bad tyres or the rims. Then I switched to alloys (Neo) and tubeless tyres (B250). This body shuddering starts as a mild shaking of car at low speed itself - at around 30 kmph or so. Gets worse between 60-65kmph - I feel as if whole car is going to fall apart. This problem dies down at speeds beyond 70kmph. Don't know whether it shows up again at a higher speed because I do not drive beyond 80-90kmph (don't have enough courage to risk my life on this Tata elephant). This is becoming a problem because I have tried wheel balancing 3-4 times in last 6 months - no use. After every balancing session I feel it is better. But the problem persists at a small scale immediately after balancing and progressively gets worse after around 1000 kms. Rims do not seem to be the problem. Do you suspect tyre runout? Suspension? Any other rotating mass that can go out of balance? Do you know some place in Pune where this can be fixed?

Any pointers to what may be wrong (rather, how to guide TASC guys to look in the right direction) is very much appreciated. Thanks in advance.
Ravi,
Are you in Bangalore or pune ?
nithinnarayanan is offline   Reply With Quote
Old 4th May 2009, 14:20   #328
BHPian
 
Join Date: Apr 2006
Location: Noida
Posts: 33
Thanked: 0 Times
Default

Should the temperature needle should start coming down ( toward left) when the radiator fan on ?

In my Indigo in this Delhi Summer this needle remain at center only once reached there . I feel the start of radiator fan too in between (Vibration increase inside the cabin ) . but this needle never cross the center mark toward right .

is this normal ?
virender is offline   Reply With Quote
Old 4th May 2009, 18:38   #329
Newbie
 
Join Date: Aug 2007
Location: Pune
Posts: 16
Thanked: 0 Times
Default

Quote:
Originally Posted by nithinnarayanan View Post
Ravi,
Are you in Bangalore or pune ?
I live in Pune. I had driven to Bangalore last month - that is when I had got the car serviced from Concorde motors.
RaviH is offline   Reply With Quote
Old 4th May 2009, 18:50   #330
Newbie
 
Join Date: Aug 2007
Location: Pune
Posts: 16
Thanked: 0 Times
Default

Quote:
Originally Posted by virender View Post
Should the temperature needle should start coming down ( toward left) when the radiator fan on ?

In my Indigo in this Delhi Summer this needle remain at center only once reached there . I feel the start of radiator fan too in between (Vibration increase inside the cabin ) . but this needle never cross the center mark toward right .

is this normal ?
I believe it is normal. This is how it works - temperature needle starts moving up as the engine temperature increases. At some point of time radiator fan starts and brings down the temperature. Temp needle should start moving towards left. Fan stops when the temperature goes down and the temperature starts rising again - making the needle move towards center mark. Cycle repeats making the temp needle move towards center mark and slightly down and back to center again.

Temp needle not crossing center mark is good - because needle beyond center mark indicates tendency to overheat. Red marked area is overheat - do not wait for it to hit red mark. Run to service station if you see your temp needle crossing center mark!
RaviH 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
Tata Manza - List Of Problems jkdas Technical Stuff 188 4th January 2017 14:01
Indica Vista - list of Known problems greenhorn Technical Stuff 1406 11th May 2016 17:04
Tata Indica Vista- Technical Specifications & Feature List Stratos Technical Stuff 2 24th June 2011 19:47
Tata Indica V2 DLS customized vs Tata Indica V2 DLX karikrishni Hatchbacks 20 12th November 2009 10:59


All times are GMT +5.5. The time now is 16:48.

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