I own a 95' sedan with 165K miles. When first accelerating, my car often shakes and has very little power. It seems to happen more when I have been driving for a while and the engine is warm. Actually, I have a lot more power when driving with a cold engine. I don't smell anything, and my car works fine besides this problem. When it shakes, I just gently pump the accelerator until it "catches" itself and works normally. Any ideas what is causing this?
2007-03-03 06:38:50 · 5 answers · asked by th_779 1 in Cars & Transportation ➔ Maintenance & Repairs
It's an automatic.
2007-03-03 06:48:37 · update #1
its hard to say exactly what it is, but im guessing something in the fuel delivery system is flooding the engine. thats why it runs better when its cold becuase engines burn more fuel when they're cold. Maybe a bad injector. If its carbuerated the choke is probably stuck. if you havent had a tune up in a while, i would suggest getting that done.
2007-03-03 06:51:59 · answer #1 · answered by monotonous_life7 3 · 0⤊ 0⤋
If the car is equipped with fuel injection, the fuel injectors are probably dirty, which will screw up the fuel mixture and make it run rough. You would notice this the most at low speed/rpm. Run a couple of cans of SEA-FOAM carburetor/ injector cleaner through the system to see if it smooths out. The car may also just need a good tune up.... new spark plugs, rotor, cap, and plug wires. Late model cars can go a long time without a tune up.... but eventually they need new ignition parts. If the wires are the originals, they will arc and lose voltage going to the spark plugs, and cause a miss or incomplete burn of the fuel. Spark plugs will also wear out... the electrode erodes away over time. Do the whole tune-up.... it'll get you better gas mileage and run a whole lot smoother.
If it's a manual shift transmission, you could check the clutch and flywheel for wear. Worn clutch and flywheel will make the car shudder when the clutch is released, a weak pressure plate will also contribute to it.
2007-03-03 14:58:59 · answer #2 · answered by dathinman8 5 · 0⤊ 0⤋
It does sound like you may have vacuum leaks...get under the hood and look ALL around the engine compartment, and on the engine. You may find a broken, split, or a hose that just fell off.
They are mostly small diameter rubber hoses.
2007-03-03 14:47:40 · answer #3 · answered by Michael B 6 · 0⤊ 0⤋
badf sensors. There are a few related to fuel intake that will shut down after getting to warm. Dumb, yes i know. I went through two months with no car and ended up with a new wiring harness and six new sensors. It will get worse so get it checked if you start to stall at stop signs.
2007-03-03 14:49:34 · answer #4 · answered by anton t 7 · 0⤊ 0⤋
I think what you're talking about is called "bucking" where you are not providing enough gas when you let up the clutch in first. I think you just have to practice a bit more on giving enough gas and letting go of the clutch. That's the only thing I can think of.
2007-03-03 14:47:08 · answer #5 · answered by Anonymous · 0⤊ 0⤋