PONTIAC ENGINE POOR MILEAGE

Engine Performance Problem 1993 Pontiac Firebird 3.4l 6 Cyl Two Wheel Drive Manual I Have Bad Gas Milage (12mpg) And A Rough Idle. My...

I Have A 1999 Grand Prix 3.8 That Is Not Supercharged. Im Getting 13 Mpg With It And I Know It Should Be Much Higher Than That. The Car Runs...

While Cold The Car Accelerates And Runs Smoothly Has No Hesitation. Once It Warms To Operating Temperature It Then Begins To Hesitate At...

Car Listed Above 3800, Just Replaced Heads On Motor And Car Seems To Be Running A Little Rough. Blamed It On 4-month-old Bad Gas, Filled...

So. I've Already Had A Question In Here Regarding My '99 Grand Am And Its Horrible Fuel Economy Just Over The Past Year. I Just Had A...

I Used To Fill My Gas Tank Up And Get 400+ Miles Out Of A Tank. Now I Only Get About 200+ Miles Out Of A Tank. What Can I Do To Get Better...

There Is A Strong Gas Smell, Rough Idle And Popping When Accelerating. This Stops When The Car Reaches 50 Plus Miles? 95 Pontiac Grand Am...

I Have Experienced A Significant Loss Of Fuel Economy. Egr Valve Is Good, Mass Air Flow Is Good, No Fuel Leaks, Fuel Pressure Regulator...

Packed The Car Tight And Got On The Highway. After That There Is A Sound That Sounds Like It's Coming From The Front Wheels Like An...

2001 Pontiac Grand Prix 6 Cyl Front Wheel Drive Automatic 114 Km Miles My Grand Prix Sat For Two And A Half Years. I Changed All Plugs...