overheat, rpm up and down, engine oil decrease

2012 DAIHATSU MIRA
60,000 MILES • 3.0L • 3 CYL • 2WD • AUTOMATIC
Avatar
HASHIM829
  • MEMBER
  • 4 POSTS
sir, my car overheat,though there is no gauge of heat but its body and engine seems to be like fire. Engine oil i using is 20w 50,engine oil level on dipstick showing a level of half as i driven to 200 km approximately. Also, at idle position rpm comes down and when i increase rpm through pedal on idle, car switch off when i release paddle. Please help and advice where is the problem. Really helpful for your advice.
May 19, 2017 at 7:12 AM
Advertisement
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Hello,

This sounds like a problem with the exhaust system being plugged. I would check the catalytic converter first.

Here is a guide that will help you see if that is the problem.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Please let us know what happens.

Cheers, Ken
May 22, 2017 at 10:50 AM
Avatar
HASHIM829
  • MEMBER
  • 4 POSTS
Thanks for your reply Ken.I checked with mechanic and he said that its gasket blown.I placed new head gasket set,changed filter,new spark plugs.Now car pickup increase and no overheat issue,but it is giving same fuel average which was before,around 10km/l.How to increase fuel average?
Jun 27, 2017 at 3:13 AM
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Try disconnecting the battery for a couple of hours to see if the system resets. Then drive it for a while to see the new average.

Jun 27, 2017 at 11:10 AM
Avatar
HASHIM829
  • MEMBER
  • 4 POSTS
Thanks Ken,will let you know.
Jun 29, 2017 at 12:17 AM
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Please do :)
Jun 29, 2017 at 10:48 AM
Avatar
HASHIM829
  • MEMBER
  • 4 POSTS
on longe route,it is giving good mileage but not smooth ride,with same acceleration feel like someone apply brake and then again it picked acceleration,this happen time to time with same acceleration.
Jun 30, 2017 at 1:06 AM
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
It almost sounds like you have an engine misfire. Here is a guide to help you confirm the problem and get it fixed.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Please let us know what happens.

Cheers, Ken
Jun 30, 2017 at 10:52 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.