Engine Has Les Power And High Fuel Consumtion

Mr.Vince · July 25, 2007

hi ,

I just bought a lexus IS 200 sport .

I find that the fuel consumtion is verry high like 13liters per 100km ( sorry i'm from belgium ) .

the engine has a bit of a judder at 4500 rpm , the moment the vvti kiks in I think ... but no where near 155 bhp .

When I drive a constant speed like 75 mph the consumption needle is in the middle and goes up and down ...

Anny one that has had this problem ?

Does the IS have a MAF or MAP ?

Greets vince ,

Scorps01 · July 25, 2007

Reset the ECU, either by disconnecting the Battery or remove the fuse for at least 30 minitues then the car will teach itself to your your driving pattern, the last owner may of had a heavy right foot

Here's how to reset the ecu..http://www.lexusownersclub.co.uk/forum/index.php?showtopic=42917&hl=reset+ecu

P38Aaron · July 25, 2007

could also try running a fuel system cleaner and having a bit of a blast.

check if the airfilter is nice and clean.

Rob · July 26, 2007

13 litres for 100 km is not the best..... the vvti does not kick in at a certain rpm - its not a vtec engine, vvti is working all the time.

try an ECU reset and look at the air filter, spark plugs as a starting point.

the Is200 uses a MAP sensor

Mr.Vince · July 26, 2007

hi ,

thanks for the reply's .

I'll reset the ecu for a start and look at the spark plugs and air filter ....

Il phone the old owner to see if he changed the timing belt ... it has 114500 km +- 80000 miles :-s

thanks for the help !

vince ,

Rikos · July 26, 2007

The consumption needle tends to move all the time depending on where your foot is and what the road is like so i wouldnt be too worried about that.

Just check all the things that have been suggested and hopefully you'll get it sorted. To reset the ecu i'd recommend taking out the fuses and not disconnecting Battery.