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Jumpy Engine


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bnmotorsgt
User

Jan 14, 2010, 7:14 AM

Post #1 of 5 (3032 views)
Jumpy Engine Sign In

2000 Nissan Maxima 3.1L (I think). When the engine is cold and driving around 25-30 mph in 3rd (std trans), the car bucks as though I'm in too high gear for my speed. Only does this when the engine is COLD. Dealer said to "use a lower gear". That keeps it from bucking as much, but still, it shouldn't do it at all. Never did it until a dealer did changed the cabin air filter. Don't know what else he did. Local dealer can't duplicate problem and says everything is fine.


Sidom
Veteran / Moderator
Sidom profile image

Jan 14, 2010, 11:29 AM

Post #2 of 5 (3024 views)
Re: Jumpy Engine Sign In

What is the rpm's at when this happens? Try take the rpms up a little higher in all gears to see if you can duplicate the problem...


bnmotorsgt
User

Jan 14, 2010, 6:05 PM

Post #3 of 5 (3017 views)
Re: Jumpy Engine Sign In

I can't go through all the gears at high rpm. The speed limit is only 25. By the time I get to the freeway, the engine is warm and won't do it. I tried higher rpm in 2nd and it helped.


brager
User

Jan 15, 2010, 11:59 AM

Post #4 of 5 (3006 views)
Re: Jumpy Engine Sign In

it could be a coincidence this happened after leaving the dealer no way changing a cabin air filter
would do that to your car few basic things come to mined i like to start with the basic items
1st that way you can rule them out and put them behind you and move on. has the fuel filter
ever been changed ? how old are your spark plugs mileage wise? and spark plug wires?


bnmotorsgt
User

Jan 15, 2010, 3:41 PM

Post #5 of 5 (2999 views)
Re: Jumpy Engine Sign In

Don't know about the plugs, wires, etc. From my experience, they break down when hot. My problem is when the engine is cold. I will, however, check them. Don't know about the fuel filter. Again, I think I'd have a problem all the time if there was an issue with it. Will check it, too. Thanks.






 
 
 






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