Hello All,
I purchased Wagon R LXI 2010 CNG K Series Pre-owned from a trusted source. It is with company fitter CNG. Owner has done all regular services. I purchased it at 55000 KMS. I got it checked by 2 different mechanics before purchasing and they both said car is fine.
However just before 3 days the car suddenly shown overheat signal. I stopped the car few minutes, the indicator of overheat was then gone. Again after few minutes, it got picked up. I have taken the car to a trusted maruti mechanic and he said radiator fan assembly needs to be replaced. Which I did and later he said to have a service of whole car since I drove 4000 KMS after purchasing and since he said it was a pre-owned car purchaed at 55K - KMS. Got oild changes, filters etc.
However when I was driving the car at night from my home suddenly vibration in the car started and even though I press accelerator it seems the car was less responsive. At low speed I feel high vibration, sometime really high. Then during speedbraker and traffic signal 3 times car got stalled and I had to restart.
I am not sure what suddenly happening here? Your help would be appreciated.
What exactly was replaced during the service you got done? I'd start by checking all of your fluid levels, as that would be the simplest of fixes.
However, my best guess with the current information would be an ignition issue, leading to a misfire/shutdown of one cylinder. Since you have the K-series (3-cylinder) engine, running on 2 cylinders would likely create the symptoms mentioned.
I'd follow the steps below:
1. Follow the spark plug cables from the cylinder to the ignition coils and beyond, to make sure everything is tightly connected.
2. Test your plugs and coils. Unplug the fuel pump fuse, remove the spark plugs, ground the threaded head on the engine block and crank the engine. If any of them doesn't show a bright spark, there's a problem. Exchange the plugs to determine if the issue is in the coil or the plug.
3. Check the firing order. The scientific way of doing this would be to look at the electrical diagram of your vehicle to verify the right coil is connected to the right plug. I wouldn't recommend trial-and-error as it could damage the engine.
I'll note that steps 2 and 3 can be baffling if you don't have a lot of mechanical experience, and that if you choose to carry them out yourself, ensure that you observe the necessary safety measures. Namely, insulated tools and gloves. If not, your trusted mechanic would surely be capable.