View Full Version : Help-Engine vibrating at stop
Deeohgee81
08-02-2005, 12:32 PM
Hi all,
Ever since I bought my car (used 2001 Nissan Altima) I have noticed that when the car is at a stop (at a traffic light for example) the revolutions drop until it gets to a point where the car wants to stall and then it picks up enough revs to not stall, and this is repeated...basically revs go up and down, up and down...this generates a forward and backward motion in the car.
Any clues what it might be? I have heard that it might be that the engine is "skipping" but i have no idea what this means or how to fix it....for now all i do is put the car in neutral and press the acceleration pedal a bit to increase revs to about 1000 so it stops making the motion.
Thanks for any help provided.
ExRollen
08-02-2005, 01:18 PM
What it sounds like you have is an electrical problem. Check your wires to see if everything is grounded properly.
Deeohgee81
08-02-2005, 01:57 PM
what type of electrical problem would you be talking about?
Wayfarer
08-03-2005, 11:00 AM
I had a somewhat similar problem with my old car. Having the the revs almost drop to a stall on deceleration, and then picking back up just enough not to.
However, what ended up being the problem for me was a sensor and the idler motor. Off the top of my head I can't remember the sensor (O2 or something along those lines).
I am, by no means familiar with the altima engine though, but the sensor could be worth looking into.
Goodluck
is the car an automatic? Is the car shaking as in vibration, or is it your idles just lumpy?
Could be motor/tranny mounts if the car is an auto, alot of times when you come to the stop and stay there with the brake on, the car vibrates a lot due to the fact the car wants to drive forward., and could be an idle stabilizer valve, o2 sensor, valve trouble, or any number of other things.
Deeohgee81
08-03-2005, 01:03 PM
The car is automatic, and it is not shaking...its mostly a forward and backwards motion....
Deeohgee81
08-04-2005, 09:25 AM
I took it to a mechanic and Wayfarer was right...it was the air intake sensor in the idle whatever....
Repairs ended up costing $498 due to cleaning of the fuel injection system.
xtreme prelude
08-04-2005, 12:23 PM
could be a vacuum leak
rc2002
08-04-2005, 12:39 PM
The mass air flow sensor on Nissans = :thumbsdow
The same thing happened to my parents' Maxima before it hit 80000km. It's a costly part too - That $498 you paid was in USD right?
Deeohgee81
08-05-2005, 07:39 AM
Right...I believe the part itself is USD$205, but the rest of the stuff they had to do due to this part failing over a period of time is what cost the rest of the ammount...
That and the fact that mechanics make USD$70 an hour in Atlanta
Deeohgee81
08-05-2005, 07:39 AM
Right...I believe the part itself is USD$205, but the rest of the stuff they had to do due to this part failing over a period of time is what cost the rest of the ammount...
That and the fact that mechanics make USD$70 an hour in Atlanta
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