[T1000]

Originally Posted by blackfire_9

I faced a peculiar issue in my Alto some time back wherein the car if started even after the engine is sufficiently hot (say after a wait at a traffic signal) would have high idle rpm & it would take longer than usual to come down to normal.

Upon showing this to MASS, it was identified as some problem with a part which if I remember correctly was called the butterfly valve. I might be wrong, but then I was suggested that it is this part that needs cleaning. However, I was warned that once they open it, it might get damaged while cleaning & then I would have to buy a new one.

I left it as it is, since the problem occurs only some times. If it happens more frequently, then I would take the risk.

I just wanted to share this with you in case my experience can give some insights.

Drive safe.

Hi blackfire, Thanks for the info . And many thanks to teambhp.
I had the same problem for the past 3 yrs and now its resolved!!!...
Here im sharing my experience as well..

My zen had the same problems
1. High Idling speed even after engine is hot
2. City mileage used to be 9-10kms on petrol but on highways i get 22kms @ steady 80-90kms/hr with ac. i cant explain this behaviour
3. Spongy brakes.

For the last 3 yrs i must have gone to MASS(sk wheels)new mumbai many times for the problem. everytime the reply woule be,

1. Idle speed is control by computer and they cant do much about it and the guy would try to convince me that the idle speed is correct.
2. Mileage was blamed to my driving habits, clutch, traffic..etc.
3. Entire brake system was changed once, but i still have spongy brake problem.
4. I service my car regularly every 6 months, i flush/change engine oil every 8000kms
5. I was charged 700rs everytime for throttle body cleaning..

After reading blackfire's post i got a hint and my cng mechanic, greenglobe told me that there is a air leak in the throtttle body packing.

With both the hints i went to cg motors, which is also a MASS.
i literally forced/screamed/shouted at the mechanic to open the butterfly value and clean it and it solved all my problems!!!!!


Here are my finding,
1. There is a stepper motor which controls air intake during idling, this motor was stuck in dirt and not moving freely.
2. 1mm thick black dirt coating found inside the housing where the stepper motor is fixed.
3. All these years the MASS guys never opened the throttle body to clean, where as they charged me 700rs everytime.
MASS just sprays 3-4 puffs of the spray at the air inlet and they call it throttle body cleaning.thats all they do.
4. we changed all 3 packing in the throttle body, this fixed the air leak problem

And the results...
1. im getting 28km/kg of cng without a/c, earlier i used to get only 20km/kg , im yet to check on highways
2. braking has improved considerably.
3. Idle speed is normal

All zen owners, if you are getting less mileage you may want to check this tiny little butterfly value!!!!!!

And thanks again to all in the forum!!! :-) :-) :-)

[prsnck]

Hello black12rr,

Thanks for exhaustive list of items. Mine 84k km run car zen due for service and planning to buy the following. Where did u purchase the fluids and engine oil. Is JC road much economical and reliable place to buy all these.
Can we get this at wholesale rate, i mean rather a good rate than if we get this from Suraksha guys only.

Castrol magnatec 3.5
Radiator flush with TecTaloy and new coolant from Tectaloy
Engine flush with OWS 210

The mileage is absurd now and is pickup, I hope the last thread in this should be an eye-opener for me too regarding the butterfly valve inside stepper motor which controls air intake.

City mileage used to be 12-13kmpl per on petrol nowadays compared to 15-16 in earlier 50k - 65k km. Do you believe any other issues related to mileage. I am sedate user of gas pedal, and used to s/w off/on AC for optimum mileage and speed gain. Mostly city stop/start drive and on a full tank-to tank basis its exactly 13km/l. Last service was done on 79k km without oil change and rest of the air/oil filters. Can this be reason.


rgrds
prsn

[speedsatya]

Originally Posted by T1000

Hi blackfire, Thanks for the info . And many thanks to teambhp.
I had the same problem for the past 3 yrs and now its resolved!!!...
Here im sharing my experience as well..

My zen had the same problems
1. High Idling speed even after engine is hot

I had the same problem at around 1.9 L kms on my mpfi Zen .It was identified as a faulty IAC valve (Idle Air Control) . Guess it costs around 2K to replace .

Close to 2L kms now ,car is still giving 14-15 kpl in the city and about 18 on the highway when I last checked .Still does 160 on the speedo .

[prsnck]

Originally Posted by speedsatya

I had the same problem at around 1.9 L kms on my mpfi Zen .It was identified as a faulty IAC valve (Idle Air Control) . Guess it costs around 2K to replace .

Close to 2L kms now ,car is still giving 14-15 kpl in the city and about 18 on the highway when I last checked .Still does 160 on the speedo .

Satya,

is it that MPFI zen gives a better mileage than Carb version. Mine carb zen '00 model was ditto the similar mileage as you mentioned above when it was run about till 60k km. And in the long run say after 70k km till date it is hardly 12-13 kpl in city and 15 kpl in highways. Due for a 84k km service in suraksha this week most probably. Will check on these lines, anything else you suggest.

rgrds
prsn

[speedsatya]

Originally Posted by prsnck

Satya,

is it that MPFI zen gives a better mileage than Carb version. Mine carb zen '00 model was ditto the similar mileage as you mentioned above when it was run about till 60k km. And in the long run say after 70k km till date it is hardly 12-13 kpl in city and 15 kpl in highways. Due for a 84k km service in suraksha this week most probably. Will check on these lines, anything else you suggest.

rgrds
prsn

Dunno on the FE figures as I have never owned a carb zen ,but the car has been giving consistent performance right from day one .I remember we had got 20+ kpl( cant remember exact figures) on the highway with the OE tires where I think I had stuck to 60 kph over a long distance .


In between ,I had a LPG kit as we used the lancer more on highways .I used to get around 14-15kpl even on LPG .The best thing about LPG was the exhaust note .

Yeah ,Suraksha should be able to solve your FE issues . Just that we stick to all the manufacturer specified service intervals for repairs/replacements.

[sushrutha]

@satya
MPFI Zen gives better mileage than Carb.

I used to get 12-13kmpl in City conditions in my carb Zen.
Best I have acheived in Zen is 22kmpl on sedate driving on Highway (full highway driving with not exceeding 65kmph).
Same condition, my relative got 24kmpl in his MPFI zen.


@prsnck,
* Replace/Clean the airfilter
* Get Carburettor Cleaning done
* Get a engine flush done, should remove the carbon deposits, improves the pickup & to some extent mileage too.
* Check/Adjust the engine Timing

[Trust_In_Thrust]

My Zen has given a peculiar problem.
Today and Yesterday it refused to start one time each.
All electrical were working .However it only started once i bring the key to off and back to ignition.It runs fine , idles fine , sounds fine and today i even ripped it hard enough to get people notice it at traffic light as i got the tyres smoking.

Any thoughts ?
MASS says it could be jamming of IAV valve , however only 5K kms earlier i had replaced it at MASS under my supervision .MY local mechanic says could be fuel pump , however even after driving of 200kms today i didnot face any issue .

[sanjusahu]

My 2000 mpfi zen,s mil light is not working from months now and I never realized it can anyone throw some light why can be the issue, electricals are fine double checked it

[abhipuru16]

Can somebody tell me the cost for a New Distributor Cap and Rotor for a 16V MPFi Zen?

Also, what make is it? Denso? Lucas?

[T1000]

Originally Posted by abhipuru16

Can somebody tell me the cost for a New Distributor Cap and Rotor for a 16V MPFi Zen?

Also, what make is it? Denso? Lucas?

It costs around 8500 in mumbai..

[Trust_In_Thrust]

What issue did you face to warrant change of this part ?
Is it Euro I , Euro II or Euro III ?

[Trust_In_Thrust]

Zen 2003 MPFI Euro II , 78000Kms
I have a issue with my zen which is refusing to go away since last few months.
When the car gets to working temperatures and in traffic snarls / hot days the issue arises only at slow speeds or during move from idle .I will try to explain i am standing in traffic i press clutch press accelerator and just as i am letting go of clutch i get this loud jolt (as if the car just dies down on me) to make me move back and forth along with car (like newbie riders who are unable to control clutch). So i often have to slip the clutch a bit or give the car a bit more gas to avoid this bucking down.
Till now i have changed spark plug s, fuel filter , injectors , ignition coil , IAC Valve , Throttle body with TPS sensor , also a gas relief valve (orange and black in color) located above fuel tank (fuel tank has to removed to replace this) . All wiring connectors , battery , alternator , raditator temp sensor etc have been checked are all in excellent working condition.
The car run fine with no hesitation or jolt on highway speed / rainy days / night .It does not have any idle issues .The Suzuki scanning tool shows everthing is perfect . The petrol tank is clean no water , rust etc .Also filter and fuel pumps works fine as was seen upon dismantling at MASS.

I had started using IOCL Extra Premium about 6 months back (adding System G to that also ) but i dont think issue could be because of that .Do You?

Any thoughts please since i am only left with fuel pump , FPR to replace ?
I am totally against the wall feel like i go and buy a new car if i am unable to solve it .

[Ironhide]

This is an informative thread indeed and I could identify with some issues that were reported here.

I own a 2001 MPFI Zen LX. It's due for its 60,000 Km service soon. Any pointers from experts & owners as to what I should look out for? Also any FNG in Delhi that one would recommend as I travel to Delhi off & on.(All my present services are at DD Motors which is a MASS in Dehradun). Any inputs are welcome.

Post the service I'm going the Cooldays ac for an ac overhaul. He's already inspected the car and says that a new condenser alongwith ac servicing is reqd. An estimate of 9500-10500 was given.The link is posted below:-

http://www.team-bhp.com/forum/delhi-...new-delhi.html

Cheers!

[blackfire_9]

Hey there,

I could suggest my mechanic at Pallika Bhavan (South Delhi), though I have used his services only a couple of times till now. Usually, it has been for oil changes & once it was for the tie-rod change in my Alto. I only suggest since I have been a satisfied customer till now, though the number of experiences have been limited.

Let me know if you would like to have a word with this guy.

Drive safe.

Originally Posted by Ironhide

This is an informative thread indeed and I could identify with some issues that were reported here.

I own a 2001 MPFI Zen LX. It's due for its 60,000 Km service soon. Any pointers from experts & owners as to what I should look out for? Also any FNG in Delhi that one would recommend as I travel to Delhi off & on.(All my present services are at DD Motors which is a MASS in Dehradun). Any inputs are welcome.

Post the service I'm going the Cooldays ac for an ac overhaul. He's already inspected the car and says that a new condenser alongwith ac servicing is reqd. An estimate of 9500-10500 was given.The link is posted below:-

http://www.team-bhp.com/forum/delhi-...new-delhi.html

Cheers!

[Ironhide]

Originally Posted by blackfire_9

Hey there,

I could suggest my mechanic at Pallika Bhavan (South Delhi), though I have used his services only a couple of times till now. Usually, it has been for oil changes & once it was for the tie-rod change in my Alto. I only suggest since I have been a satisfied customer till now, though the number of experiences have been limited.

Let me know if you would like to have a word with this guy.

Drive safe.

Thanks blackfire. Shall PM you when I'm to come to Delhi which should be another two-three months' time. Appreciate the help.
Cheers !