Engine Mechanical problem
1994 Infiniti Q45 V8 Automatic 139000 miles
I've had my Infiniti Q45 for about a year, it's a 94' with almost 140k miles. About two months ago the car started with acceleration problems... jumpy rpm's, stagger, boggle and wouldn't allow me to get above 40mph unless I completely backed off the throttle, then it seemed to catch. The engine light comes on and off randomly, usually in city, but recently highway also. When this acceleration issue occurs I tried flooring it to see what would happen and the rpm's nor the speed would respond and I almost could hear a "popping" like sound from under the hood as if it's trying to force a boost while the rpm's jolt. A mechanic told me two weeks ago my Mass Air Flow Sensor was bad, I replaced it, and the car accelerated better, but lacked power and performance. I still get engine lights on and off, and today I almost didn't make it home from school. I made a turn off a road and when I went to accelerate the car wouldn't go past 20mph, it seemed that if I backed off the throttle it would move a little, but if I gave it gas it only slowed. I had to pull over and avoid cars to get it home at 20mph. Also, the rpm's run high if i'm in neutral, and i noticed when in idle a while it sounds as if it may die, with the rpm needle fluctuating up and down. Please help!
1994 Infiniti Q45 V8 Automatic 139000 miles
I've had my Infiniti Q45 for about a year, it's a 94' with almost 140k miles. About two months ago the car started with acceleration problems... jumpy rpm's, stagger, boggle and wouldn't allow me to get above 40mph unless I completely backed off the throttle, then it seemed to catch. The engine light comes on and off randomly, usually in city, but recently highway also. When this acceleration issue occurs I tried flooring it to see what would happen and the rpm's nor the speed would respond and I almost could hear a "popping" like sound from under the hood as if it's trying to force a boost while the rpm's jolt. A mechanic told me two weeks ago my Mass Air Flow Sensor was bad, I replaced it, and the car accelerated better, but lacked power and performance. I still get engine lights on and off, and today I almost didn't make it home from school. I made a turn off a road and when I went to accelerate the car wouldn't go past 20mph, it seemed that if I backed off the throttle it would move a little, but if I gave it gas it only slowed. I had to pull over and avoid cars to get it home at 20mph. Also, the rpm's run high if i'm in neutral, and i noticed when in idle a while it sounds as if it may die, with the rpm needle fluctuating up and down. Please help!
Jan 28, 2009 at 7:32 PM