Jump to content


Recommended Posts

Posted

Hey guys,

I am having a major issue with my 04 IS300. The gas mileage has been horrific in the city compared to what it was getting previously. I have noticed a significant decrease of city mpg and I can visually see it going down tick by tick in maybe a fifteen minute commute from work. I used a up a quarter tank in one day, I think that is a bit excessive. My car is 59k mileage, but I thought spark plugs could have been an issue so I changed those with my timing belt, water pump and many other parts. I thought after changing my spark plugs everything would be fine again but it is not unfortunately. If anyone is having a similar problem or resolved this issue please reply back. Thanks in advance!

Posted

So how bad is the gas mileage your referring to? Did you pull the 02 sensors and check those also? What about your fuel injectors? Do you have any codes or a cel?

Posted

What's the temp outside in Virginia? If it's like freezing cold outside, it might be running rich. I live in So. Cal but believe it or not last year, we had some very cold mornings and I noticed the same thing, temporarily.

  • 3 weeks later...
Posted

Smooth1 I have no codes and I let a mechanic look at it and he has no clue also because no codes are showing up. He told me it's probably due to the cold weather outside, I am really hoping that is the situation.

  • 2 weeks later...
Posted

What kind of plugs did you use?? Iridiums are required for the 01s - probly the same for yours. Go to the dealer for any parts for your car, in other words...just a possibility if you let a friend do your plugs he might've used platinums which will change how the timing works. This in turn can affect mileage

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


×
×
  • Create New...

Forums


News


Membership


  • Unread Content
  • Members Gallery