My 98 has 120k miles.. I've noticed that my MPG (all city) have gotten worse suddenly... car's been taken care of religiously of course..And the car doesnt pickup as well as before.. just slightly.. The engine's silk smooth as always, of course.

I know my car very well. Had it since brand new. I wonder what could be causing this..

Dirty air filter maybe?

My car used to PICK UP, and I mean PICK UP like a turbo beginning at 3000 RPM,, but thats not as strong as before too.. hmmm

no CEL lights either.

 

When was the last time you changed your spark plugs?

 

check your air filter, fuel filter also

 

get a tune up

 

do all that they said above and a throttle body cleaning
instructions http://www.motorvate.ca/

 

Well, if all else fails I think it could more than likely be the weather it has been close to 100 the past few days here and I've noticed about a 4 mile drop in my MPG. The power has really been affected also.

 

hokiemax I'm assuming you go to Va Tech I will be a frosh this comming fall hope to see you there

 

Fuel filter is new (300z filter)
spark plugs are about 50k miles old
throttle body = never cleaned.
And yes, it's been really hot lately.. maybe thats the cause.
its time to clean my PRCAI filter too..

Zman, it's me ethan. hahaha Hokiemax is my handle.

 

For Knock Sensor

 

Time for your 120K service. Had mine done 2 weeks ago and power is back.

Chris