I have pajero io 1999, 1.8, 5 doors.
It consumes 12.5 - 13l fuell in town.
Is it normal ?
I have changed spark plugs, fuel and air filters but it did not help.
Computer diagnostics shows nothing wrong.
Have you any idea what else can be done ?
Check out Bob_oz's post about resetting the ECU.
Hope this helps.
Welcome to the forum :)
Size is not important; it's how you use it that matters!
For fuel consumption discussions, it would be best if certain things were clearly stated - engine size & type is one, transmission type is another, wheel size (if you have oversized tires, style of driving, and the mix of city highway usage also make a difference.
I know you said you have a 1.8, but there are two 1.8s used in the iO, a conventional MPI (multi-point injection) SOHC 1.8 & a GDI (gasolene direct injection) DOHC 1.8, and the same holds true for the 2.0, there is an MPI 2.0 & a GDI 2.0 - the GDI is advertised as having the power of a gasolene engine and the economy of a diesel.
Unfortunately I don't have consumption numbers to back my observations, however, I have noted, that my iO seems unacceptably thirsty when used in town, with the a/c on, switch the a/c off and there is a noticeable reduction in the fuel usage, and if you're on the open road, it's quite frugal, with or without the a/c - it was (or is) my intention to do some "monitoring" and get numbers to back these observations in a couple of weeks (I leave in the morning for the US).
Oh - my iO is a 4 door, 1.8 GDI with automatic transmission, and the standard 215/65R16 tires.
Having returned from my trip, I started using my iO as my daily drive to try to come to grips with the fuel consumtion - I got two full weeks on the first tank of fuel, (sorry no l/100km numbers), which I would consider quite reasonable, it's what I get from my GV, except that the GV has a larger tank, I started the second tank and was down to a half tank in two days - definitely not acceptable - so I started investigating - seems I may have a bum O2 sensor so the engine runs rich most of the time. All the other sensors check good, that was the only one where the test results didn't match the manual.
The check engine light comes on with the key and goes out prior to the engine starting so the fuel consumption (along with the smell of the exhaust) is the only indication of a problem - discussions with a friend who is an ECU design professional indicate that O2 sensors on these older vehicles have a life expectancy of around 30~50,000 miles, this one is long past that (over 80,000)
I've managed to locate what appears to be a very reasonably priced "exact fit" replacement in the US and placed an order, along with the necessary removal & thread repair tools, so the iO is once again relegated to back up vehicle until they get here, which should be in a month or so - the order goes to my daughter in Florida and then the wife will bring them over.
I am getting simliar results with my 1.6L. Its surprisingly bad on fuel.
Although I already knew that from check out redbook.com.au. It doesnt bother me much as I dont need to drive to work and back every day in it.
My 2.0 mpi manual SWB gets around 9.5l/100km hwy and 11l/100km city with std tyres. Around 5% more with 29"muddies.
It looks like I'm using more than 14L/100km.
"It should be assumed everything I say and do is incorrect ".
Just read bob's post. Will have to try that I think.
If you do a lot of 4x4 it could!
My io is now SOLD Thanks
I have done a trip in the Brindabella on Saturday with 2 other cars, filled up the fuel tank in the morning. I have done around 200 km on Saturday and 100 km since. The 100 km were on road, and I know that it is around 11 l/ 100 km. I had to fill up and put 45 litres in the fuel tank, less the 11 l for the "in town" driving so I used 45-11=34 litres for 200 km in the Brindabella. Yes mostly on 4x4, with sometime the A/C, but still that is 17 l/ 100 km!!! I knew it was thirsty but not that bad!!!
On another subject, one car was a Mazda tribute 1992 (?), and they wanted to visit the area. I was very surprised about what it could do, the tyres were the michelin latitude and they were gripping very, very well (someone mentioned them before, Bob?) The poor wife and kids had to get out of the car and walk up a few hills, because the engine was going out of puff (no low gear) but they made it. ( lucky it didn't rain!)
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