Car shakes after starting up.

Car shakes after starting up. I have a 1993 Altima Gxe

Car shakes after starting up. I did an oil change on 9-14-07 Then I filled up gas on Saturday 9-15-07.

The shaking started after I filled the gas up.

The Oil change place I took it took does have some bad reports online. This particular place has a trust worthy mechanic and is high respectably in this community. This person would go out of they way to help you. He was there at the time of the oil change, No oil leak.

It shakes real bad. What is odd about the shaking? It seems to be worse under 30 miles and hour. Less shaking above the 30 mph. I noticed it shakes a lot worse with the overdrive on. I had to turn it off. To even go.

I took it back to the place. He told me I could of got air or bad gas in the tank. He told me to drive it awhile and it could clear up.

My questions. Should I drive it until I get the gas when it gets down to 1/2 tank or even 3/4 of a tank? Then add gas. I got the gas at Sunoco 91 grade. Which usually does great.

Should I add a gas treatment to Nissan.? What brand should I use? The last time I did a treatment. I had to replace a distributor cap. It is a fuel injection engine

Should I take it to a shop or is there another cause? Spark plugs and wires look ok.

Thank You,

Greg Rozelle P.S. I know there is a debate with leaving the overdrive on or off or only turn it on at a certain speed.

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Reply to
Greg Rozelle
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First, does it shake when the car is stopped and the engine is idling? If yes, then it's an engine problem. If it shakes only when driving, then it is likely a drivetrain problem. If it's an engine problem, has it lost power? If it has lost power, is the loss of power worse under load? If so, the ignition system needs to be checked (distibutor cap, rotor, wires, spark plugs etc.). The oil change and gas may simply be coincidental and have nothing to do with the problem. Do some logical diagnosis first. It will point you to a cause which will imply a fix. It's better than stabbing in the dark. Good luck. Al

Reply to
al

Don't discount smaller problems either. Even a broken motor mount will cause the type of shaking you describe. Start with the smaller possibilities first, then go up from their. I have found that most technician's are quick to agree with you if you believe a large repair is the order of the day.

Reply to
Bajori

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