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-   -   The Tata Safari 2.2L Technical / Problems Thread (https://www.team-bhp.com/forum/technical-stuff/43377-tata-safari-2-2l-technical-problems-thread-240.html)

Can some one help me getting the email Address/ Contact details of the Head office of Grevience Cell where we can register complaints.


Recently the Brake Booster was changed in Safari and from that day i am having lots of problems with the brakes, and when approached service advisor he is telling that it all fine. but the brakes are not working until unless i pump it twice.

regards
suresh

Get the master-cylinder checked, it might be the cause of problem. I got mine changed when the brake booster was repaired.:)

Let me try it and see. :)

The entire brake booseter, master Cylinder every thing was changed after that i started getting the problem ..

so if some one can share me the details it would be helpful.

Got the injectors replaced under Extended Warranty. Now the SA says that the timing belt is frayed, and suggests going for replacement of the timing belt as well under Extended Warranty.

What all are the mandatory parts to be replaced along with the timing belt ? Does the water pump have to be changed as well ?

Went to Prerana Motors Peenya today as it coincided with some work I had in the same area, 4WD not working was diagnosed to be a loose connection in the transfer case ECU harness, and I was wrong about there being no fuse for the transfer case, it is a 20 amps fuse right there in the dashboard fuse box, I must have missed reading the layout.
I met Raghavendra, a service advisor who seemed to know his job and knowing Satish Shetty, their A.G.M service, who was also present made it a pleasant experience overall, now contemplating leaving my Safari at Peenya for it's next service.

What hardware are you using for this application? That is, does it have analog and digital signal input capabilities? If so, what kind? What processing capabilities does it have?

Not everything needs an extra hardware validation. For example, (if one has decent processing capabilities), one can use a trend of values - say least/average/max of last 5 valid non-zero readings, and reject values that defy this trend, including 0. That way, even if you turn the switch to off, the last few values are retained for any calculations involving fuel quantity.

Tap into the alternator output with a capacitor to extract the ripple. No ripple = engine off. 'Burst' of signal with nothing before or after: reject as implausible. Ripple will be of the order of 1-2V p-p. It is also possible to infer from the battery line voltage by associating voltage bands with operating conditions. For example, <10.8V = cranking (if this voltage is showing for >5secs, battery health is suspect); 11-13.2V=engine off; >13.2V= engine running.

@tsk is suggesting doing the same from the RPM signal. @tsk, will a VR be appropriate or a capacitor and a diode? Diode to extract inst. avg. value of RPM signal, small cap shunt across diode cathode and ground to hold the (inst. avg.) value. Scale in software as required.

:) Implement a software filter to remove 'noise'. Play around with the filter time-constant to get the most optimum results.

Alternately, 'trend' the geographic path taken by the vehicle, so that 'deviant' data can be dropped off. For handling breaks in signal, use the same trend - but now compare 'history' trend with 'current' trend and set LL/UL for validating which should you use. You might have taken a 90deg, or even a U-turn, so you need to detect that!

Basically, such stuff is dependent available on processing power. One doesn't need much power if one uses very simple, appropriate mathematical techniques to overcome real world challenges.

Call 080-66373400-09. You can also try the 1-800 number.

There is a close to 50 degrees slop near my office which I can climb easily in 1st gear around 1600-1700 rpm. However, today the vehicle could not climb the same slope from standstill. On half-clutch, the rpm just would not move beyond 1200ish with clutch, accelerator and brake pressed/released. Even 4H did not help. 4L would have done the work, but did not try.

Any pointers? The clutch is otherwise working fine, at least there is no slippage.

I am using a Teltonika FM4200 connected to Wialon.
Links :-
Teltonika - FM4200 | Teltonika
Wialon - GPS Tracking Software: GPS Fleet Management, Vehicle GPS Tracking System - Gurtam

The Device has 4 Analog and 4 Digital Sensors.
I am not very sure, but I think the processor is ARM 11.

I did not quite get this. How do I create or define a trend. And more specifically how do I make the software do it? I do not have any code level access.
There are a plethora of options in the software, I will browse all and find out if anything related is there.
N.B - If you (or anyone) wants to check out the software, please drop a buzz. I shall share the login credentials. (It's a web based thing, so no installation is needed).


Hmm...
The Analog inputs are negative type and can read voltage in a line. And doing that I have achieved satisfactory results. The system allows me to create a calculation table to convert sensor values. I have created it in such a way that any value in the alternator line below 12.5 V is to be treated as 0 and anything above as 1. This gives me a modified digital sensor with binary output.
This is giving me beautiful notification about engine on/off status with no error.
But, Why do I need a capacitor? What is ripple?
Can the general digital / analog sensors sense ripple?
This device has a pulse input as well ( normally to be connected to pulse type fuel flowmeters). Can that be used?
Please let me know if I can post any further detail about the hardware? (I have a 63 page manual).

I did not understand this part! please:

Need to figure out how to do it. The software has some kind of filter to reduce noise in the fuel sensor. (The values change when the vehicle jerks and the float bobs). Need to see if that algorithm can be used in other sensors as well.

I am sure my software vendor will cry! :D
I guess ARM 11 (if it is ARM 11) is up to the task. The device triangulates every second and has been consistently handling the tasks for some time. The global feedback on this one is also pretty strong.
I guess when I hook up the CANBUS then the real fuin will start. :-)

smsrini,

I own a Feb -2011 model 2.2 Dicor VTT safari. My beast has run 11600 Kms till date. I am a newbie to BHP.
I am going to TASS (Concorde Motors, Mysore Road) tomorrow with my beast for similar kind of problems (1. jerking/gasps with smoke puffs very often at low speeds and (2). I feel like the engine is trying to switch off and after accelerating it will regain its strength)

I have read through the earlier posts in this thread and came to know about the probable problems.
1. Injectors to be checked
2. Air Filters to be checked.

Can somebody tell me what extra care should be taken or what should I expect from the TASS service advisor, so that I may not accept whatever the SA tells me. I am writing this because, I have reported the same issue couple of times to TASS, but they say it is common across all 2.2s.

I am waiting for the inputs from you all - experts. PLEASE HELP

Thanks,
SHAMS

Sheelz,

I am not sure whether you have already got the resolution for this problem. Even I had faced a similar problem couple of weeks back.
There is a pipe at the bottom left side corner (Near the clutch pedal) which drains out the water from AC unit when you engage AC. This pipe was pulled towards inside and hence whenever I engage AC, water would come inside and the carpet used to get wet. I took my beast to TASS, concorde motors, Mysore road. They fixed it with in 5 mins.
You can also do it yourself if you have proper equipments (hallen key) to remove one screw.

Hope this helps.

Thanks,
Shams

I think you should put pressure on them to get the retro fit kit for timing. It includes a lots of part(perhaps the water pump also).
Do not delay it. A broken timing belt can be a lot of trouble.
Older safari's had a defect, and with this new retro, things are fine now.

Hi All,
I own a Feb -2011 model 2.2 Dicor VTT safari. My beast has run 11600 Kms till date. I am a newbie to BHP.
I am going to TASS (Concorde Motors, Mysore Road) tomorrow with my beast for the problems mentioned below
1. jerking/gasps with smoke puffs very often at low speeds
2. I feel like the engine is trying to switch off and after accelerating it will regain its strength
3. A lot of cabin noise when my beast crosses 100KMPH. Mainly somewhere near leftside front door.
4. Low fuel economy ( ~9.7 kmpl in city limits, 80% without AC 20% with AC)
Can some one let me know if you have already faced similar problems with your beast so that it will help me in narrowing my investigations and finding the solutions.

I have read through the earlier posts in this thread and came to know about the probable problems.
1. Injectors to be checked for point #1
2. Air Filters to be checked for point #2.
PLEASE HELP !!!
Thanks,
Shams

Can you post a close-up picture of the area for the benefit of all of us.
Thanks.
-BJ

Wow - you sure seem to be on a mile-munching spree :)

I have seen many instances of this issue being reported on this forum. Personally, I have faced this only twice till date (over my 20 months/15,000 kms of ownership). Based on advice from stalwarts, I did some high-revving (drive in excess of 3,500 RPM for some distance) and it worked for most. Yet to face the issue again. Will be going for my 2-year service shortly and will ask them to investigate once.

Does this occur in conjunction with issue #1?

Welcome to the Safari club :) This is something that you might have to live with. If you inspect the door panel gaps of the Safari closely, you will realize that this is a design flaw and not much can be done about it. You can try getting the door beading changed once but that might be of little/no help.

What are the highway figures you are getting? I have never had a chance to calculate my economy in city as my beast does only highway runs. I usually cruise in the 90-110 kmph band (rarely more, even on GQ roads) and get a consistent economy of 12.5-14 kmpl with A/C on most of the time.

Hope this helps!