My car is great shape, low miles, and runs grate most of the time. once in a while my RP- MS go up and down, and car seems to shift also it seems to be a little bit harder on gas latley.
Is there any one that knows what is going on?
Single/ female.
Thanks.
Your transmission shift problem is probably due to a bad "manual lever position switch". This switch is located under the car close to an exhaust pipe and gets very hot and will start failing with time. Have a transmission shop test it and replace it. The cost is around $75 for switch and $65 for labor.
The reason it is probably getting not as good as gas mileage as you want is because of the air filter. You can go to O'Reilly or Napa or even Autozone and get a K&N high performance air filter; it will increase your MPG, and give you more performance. It's better in the long run. I've had a high performance K&N air filter since 1998; it can be washed and reused, it's that simple.
Also, you could get new spark plugs; sometimes they don't fire right due to age and what not. Allow as big of a spark and the same amount of gas, so basically wastes gas.
Well hope I helped.