"I have a 2007 Optra LT and found this out when I hooked up my GPS system and there was a difference of 3 to 9 KMH. I wouldn't have even known there was a problem and you might not either. Spoke to GM head office and my dealer and they feel it is no big deal, but I feel it is a safety issue and the speedometer should be accurate."
If this was a standard hand-held GPS, it is not giving you the pinpoint accuracy you might think. A better way to cross check the accuracy of the speedometer, and by definition the odometer, is to use the highway markers and check that they are reading one mile apart on the odometer. Using a stopwatch, doing 60 mph you should pass each mile marker at 60-second intervals. Unless you have a very expensive, survey-grade GPS, it is only truly accurate to within about 50 feet regardless of the "1-meter accuracy" claims on the box.
The same goes for checking speed -- the GPS will be pretty close, usually within 3 mph, which sounds about the range that you're reporting, but they don't have the capability for exactness. It's not the car that's inaccurate, more than likely it's the GPS.
Just changed the rim and tire size. It will do.
Fc about 9.5-10.0/L in 60%city and 40% drive. a bit wind sound though right side when speed >100km.
I have a Optra sedan 1.6A,problem is jerking from N to D, it occurs sometime, to avoid this problem is just soft acceleration after N to D.
A way to safe FC is gentle acceleration and avoid traffic jam area, because this car is heavy, the FC will goes higher in this way.
My car FC about 9.5-10 km/L with 80%urban and 20%highway, I think is OK for this car.
I have an Optra 1.8LT too. I have it for almost 5 years now, and it seems to performed well so far. I have done some minor modification, such as K&N Air Filter, stabilizer, HID lights and changed rims to 17". Stabilizer will help with responsiveness. The petrol consumption is still very good, about 10 - 11km/ litre. The ride is still comfortable for such size rims. My highest speed I got on the speedometer was 192km. Note: I have a full body kit so that add weight. But so far so good.
There are some setback is you have to take good care of the car, and also need delicate handling and care. However, I guess it rewards you when you do that. The only problem I have with the Optra is the ride when I lowered it, and like everyone else said, the battery dies quickly.
:)
JH.
Why does the HOLD sign comes out, very very often, I hv to restart the car to take the thinking off, as if the HOLD is up, it will drag the car like for snow handling, and the check engine lights will be up, wat can I do, can anyone recomend me a good mechanic in KL, I need one urgently help, can reply to harveyyeap@yahoo.com. thanks a lot.
I have a Chevrolet Optra 1.8L 2004, have problem with the transmission while applying full stop brakes, transmission jump ones. And sometimes the gear from P to D takes time to engage. Please if any one know how to fix this problem mail me at sayra_karl@yahoo.com, co's I ask many mechanics but they say that to overhaule the transmission but why!the clutch are not burn and while driving it shipt very well.
I have bought chev optra 1.8lt 2004 done 37000 km and we programmed the tcm calibration with the latest software calibration to improve shifting as per description of the program. this issue is about jerking when shifting the gear from "n" to "d". but the problem is, when performing the program it fails when reaches 70% of the downloaded file. I tend to perform the program due to the jerking concern and as describe in gm bulletin.
Please somebody help me to restore my previous calibration file.
I have a Chevrolet Optra (2004 model) and I have attained a total of 39,000km to date. The problem now is "Why does my Chevrolet Optra jerk if I hover between 75-80kmhr?" My service centre seems not to know the answer. A useful suggestion to address this problem is welcome. Please your suggestion to adeniranshola@yahoo.com.
Thank you.
I'm very interested in Chevy Optra since the last two months. And after I looked at their prices, around 35k something, it's not bad. But what is really bare in my mind is their fuel consumption and other mechanical issues... My previous car is Kancil... don't have any experience with above 1000 cc cars... any suggestion or idea? Maybe can install hydrogen stuff to reduce the fuel consumption?
Anything can email me @ ayie_mcd@yahoo.com.
Does anyone has a problem with the car alarm going off by itself?
It happened 4 days in a row...
I also experience the inaccurate fuel gauge problem...
Overall very stable, quiet car to drive... Spacious but what a guzzler...
I too just started having my alarm go off for no reason... started yesterday, and been going off all day today (Apr 21/09)... anyone else have this issue and/or know what is going on??
I also have been having issues with the alarm going off for no reason. The dealer believes a sensor is gone and estimates it to be around $250 to fix...
I have an Optra 1.6 manual... done 55000k and 3.6 years old... car did real well for the first 2 years or so (was under warranty then)... soon after that things started going wrong... headlights constantly burning out, tails lights a disaster, fuel gauge faulty, petrol leak on filling of fuel, brake pads worn out at 30000k (shocking) etc etc.
The biggest shocker came when the oil pump failed at 50000k... along with the oil pump went the timing belt, a few valves, timing tensioner & a polish of the crankshaft required ( total cost of Rs 80000) ...
Can you believe this!!! For a first hand owner driven car, not doing more than 30 km a day city driving, such was the mayhem...
PLEASE PLEASE do not attempt buying GM cars... Japanese cars might be smaller & lighter but they are bloody good on performance & after sales... and most important they deliver PEACE OF MIND... a statement which I guess is unknown to GM.
I purchased a 2004 Chevy Optra 5. After 100,000k the wiper motor went. The keyless entry no longer beeps when it locks. The clutch servo went which meant that the clutch also needed to be repaired. The repair costs are outrageous as all the parts had to come from GM. The maintenance of the timing belt was another shocker. The cost of a water pump was $360.00 as compared to most around $60.00. We saved money on this car at purchase but after all these repairs it would have been smarter and about the same price to buy a Toyota. This car is made in Korea. I will NEVER buy GM again.