Thread: Take a guess....

So my car is getting TERRRIBLE gas mileage, It's got new plugs, wires, coils, 2 new o2 sensors new fuel filter, just ran fuel injector cleaner through it. I've unplugged the MAF to see if thats the problem, but it just runs terrible. Sometimes after I shut the car off in the garage It smells really strong of gas. It's been doing this ever since I put a new a/c condenser and new compressor in it. Any ideas? fuel pressure regulator? I drive 26 miles to work a day and it takes a quarter and a half tank of gas. Easy driving too, I usually try to keep the RPM's under 3k. Any guesses? It's really starting to get on my nerves.....

Just replaced it less than 2 weeks ago....

what kind of bad connection?

probly around 2-4 month I guess

Exhaust leak?

Originally Posted by AdamBall

car doesn't rough either? no codes?

runs smooth as can be, no codes at all

Originally Posted by ninnyGTP

Exhaust leak?

nope, I had the u bend taken ou,but thats all thats been done to the exhaust

Originally Posted by AdamBall

What about a clogged cat? Would that cause bad gas mileage?

possibly, but it doesn't run like its clogged?

gas tank leaking? or injector maybe?

yeah i'd say you have a leak somewhere...check the tank, filler neck, lines, rails and injectors

but if it was leaking, wouldn't it be doing it all the time? it doesnt leak or smell when its just sitting, it just smells really strong of gas in the fumes

not necessarily.... could be doing it when u turn left or right, when u have a full tank etc etc... when u hit a bump... who knows... gas smell coming from front or rear of car?

Originally Posted by imdaman3

id haft to say fuel pressure regulator my 98 bonneville just did the same thing,theres a easy way to tell unplug the vacum line and see if it smells like gas ,if it does replace it

I'm gonna go try it and see.