Power vs. Efficiency
#1
Power vs. Efficiency
Last month I was getting awesome gas mileage (22-25mpg city, 25-30mpg highway) and I was stoked! Last week I decided I would change out my fuel filter and PCV valve for basic maintance. I noticed that I had a little more get up and could really get a solid chirp out of second gear on the shift. My dilema is now I get only 17.2mpg city (all tanks are high octane 91+) and only 24mpg on the highway....what the hell is going on...i understand that now more fuel is being pumped into the car with less resistance but a drop of this magnitude seems extreme! I need some advice on what I could check or replace to get my efficiency back close to where it was. Thanks in advance!
-Lieb-
-Lieb-
#2
Member who somehow became The President of The SE-L Club
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Originally Posted by Linkage23
My dilema is now I get only 17.2mpg city (all tanks are high octane 91+) and only 24mpg on the highway....what the hell is going on.............
I noticed that I had a little more get up and could really get a solid chirp out of second gear on the shift.
I noticed that I had a little more get up and could really get a solid chirp out of second gear on the shift.
#4
make sure that PCV is the correct one (im sure it is) to get best gas mileage also my MPG dipped after I changed my fuel filter (under 400) ....then on the next tank i got 425+ from there on out....just a suggestion
#7
Hahaha, Yeah I know that my test of chirping gears is a great reason for the decrease in MPG but I only did that a couple times to, ya know, be sure of the peformance gains. : ) I haven't done a tune up on this car for over 5 years, I'd imagine I need to change out a few more things, right?! My PCV valve is the correct one and is hooked up correctly. Could a new knock sensor be the culprit?! If I'm not throwing any codes what else should I check, besides my driving...
-Lieb-
-Lieb-
#10
Every 0mph to speed limiter kills a mpg for me... But I've never done more than 8 runs on 1 tank before, so I dunno what happens after that.
Last time I changed the fuel filter, I also noticed a decrease in mpg initially, but it went back up after a tank.
Jae
Last time I changed the fuel filter, I also noticed a decrease in mpg initially, but it went back up after a tank.
Jae
#11
I've also noticed 3-5mpg decrease on my 97 SE after installing O2 sensors x 2 and knock sensor. Now the car pulls a bit harder and accelerate a bit better but can it be justified by the 3-5mpg decrease, I thought it suppose to increase by 3-5mpg
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