Very Odd issue, only happens on hard accelerations/heavy load
11-07-2005, 01:29 PM
#1
Very Odd issue, only happens on hard accelerations/heavy load
I can not figure this issue out for the life of me. Any time in which I start to press the gas hard, the whole car starts shaking. It only happens during a certain rpm range, and only under hard acceleration. Even if I am only going 30 mph and I am in 3rd gear and I give it some gas, the whole car once again starts to shake.
It is almost like all my rims are bent, but the shaking only happens on acceleration. If I am coasting at 30mph, or even 100mph, the car is perfectly calm and stable. But as soon as I hit that gas pedal, the car just shakes to no end. It kind of worries me to be honest. I checked all the wheels, all nuts are fine, and I have not installed/de-installed anything recently.
Any idea’s guys? This is driving me insane. Whatever it is, I have 38k miles on my car, so I hope it is an engine/tranny issue.
It is almost like all my rims are bent, but the shaking only happens on acceleration. If I am coasting at 30mph, or even 100mph, the car is perfectly calm and stable. But as soon as I hit that gas pedal, the car just shakes to no end. It kind of worries me to be honest. I checked all the wheels, all nuts are fine, and I have not installed/de-installed anything recently.
Any idea’s guys? This is driving me insane. Whatever it is, I have 38k miles on my car, so I hope it is an engine/tranny issue.
11-07-2005, 02:39 PM
#4
I've had this happen to me.... only under acceleration, I thought for sure my tranny was fooked, but it turned out a new set of tires fixed it.
So typically, an alingment, new tires, balance and rotation, or a combonation of these items maybe to blame.... Or it may be engine related ... But I was once there.
11-07-2005, 03:02 PM
#5
Hmmm, I don't really understand how tires could be the culprit to this particular issue. But I will go have them checked I guess. They are practically brand new, 80% + thread on them. The rims and tires have only been on my car for this one season, and I bought them brand new. If it turns out to be the tires, I will be really ticked off because I do not want to pay $250+ per tire again since they are so new.
Any other idea's, just incase?
Any other idea's, just incase?
11-07-2005, 03:04 PM
#6
i had a similar issue on an old chevy corsica. i dont know if its shaking coming from the engine, or just suspension components.
on the corsica cylinder 6 was getting stuck, and the whole car would shudder and try to stall. you may want to have the dealer or mechanic check out the compression ratio on all your cylinders, and whatever else they can.
of course this suggestion is useless if the shaking is coming from the wheels, and it feels like the car is just off balance.
on the corsica cylinder 6 was getting stuck, and the whole car would shudder and try to stall. you may want to have the dealer or mechanic check out the compression ratio on all your cylinders, and whatever else they can.
of course this suggestion is useless if the shaking is coming from the wheels, and it feels like the car is just off balance.
11-07-2005, 03:06 PM
#7
First off are there any ECU codes?
Does it seem engine or drivetrain related? How many miles on your tires...?
Might as we'll move from the cheapest possible fix, to the most expensive...
Not the MAF is it?
You could also do a CT on your own for cheaper... I doubt it's compression related, and more likely suspension....
Does it seem engine or drivetrain related? How many miles on your tires...?
Might as we'll move from the cheapest possible fix, to the most expensive... Not the MAF is it?
You could also do a CT on your own for cheaper... I doubt it's compression related, and more likely suspension....
11-07-2005, 04:06 PM
#11
Originally Posted by cutter
You shouldn't have drove up those stairs 
But seriously though, the engine is running very strong. I can feel that it is not knocking/pinping/misfiring, or a mafs issue. I am very familar with those issues from my 99 se-l max I had. There are no ECU codes.
maybe it is a bad motor mount? what do you think?
it could be suspension related, for the shocks are getting a bit old/rusty. I think one or more could be blown, but I do not know how to tell because the car does not "bounce" like a normal car when the shocks go bad.
11-07-2005, 04:19 PM
#12
Dude its ur mounts ive got the same problem and just to be sure open ur hood put it in gear hold the brake down and have ur friends look at it and they will the engine bop back and forth and hear a clunk noise every time ur hit the accelerotor try it and see whats up
11-07-2005, 06:11 PM
#13
Supporting Maxima.org Member
Join Date: Dec 2004
Location: Lakeland, FL
Posts: 1,587
Originally Posted by silvermax2k2
It only happens during a certain rpm range, and only under hard acceleration.
and... what RPM range is this?
does it happen in each gear?
if you can duplicate it in 3rd at 30, can you duplicate it in 2nd at 30?
you might consider cking the balance and road force variation. if the tires are new, you should have a warranty on them, or something... esp if they came from the dealer. how many miles on those tires, how long you had them?
as we sit, with the current information, im voting for CV joints...
11-07-2005, 06:29 PM
#14
range from like 3k to 5.5k in every gear 2-5. (haven't tested 3k+ in 6th! ack! lol)
again, I am almost certian it is not my tires, but they were brand new when i got them, and everything was fine up until about a month ago. I got them in the middle of spring time, and there are about 5k miles on them.
I am not doubting that it could be my CV joints either... thats a good idea. It sucks going to nissan because they claim that they can not work on my car because it is too low, and they can't get it on the lift. Bull **** nissan. I want to smack them.
again, I am almost certian it is not my tires, but they were brand new when i got them, and everything was fine up until about a month ago. I got them in the middle of spring time, and there are about 5k miles on them.
I am not doubting that it could be my CV joints either... thats a good idea. It sucks going to nissan because they claim that they can not work on my car because it is too low, and they can't get it on the lift. Bull **** nissan. I want to smack them.
11-07-2005, 07:19 PM
#15
Supporting Maxima.org Member
Join Date: Dec 2004
Location: Lakeland, FL
Posts: 1,587
where did you get the tires?
id see if theyd check balance and road force for free, since 'their tires' are 'giving you problems now'
though your mileage makes me lean away from CV joints.
id see if theyd check balance and road force for free, since 'their tires' are 'giving you problems now'
though your mileage makes me lean away from CV joints.
11-13-2005, 06:11 PM
#17
Newbie - Just Registered
Join Date: Aug 2005
Posts: 8
a couple things to check. axles will do this, and also check the passenger axle support bracket and bearing. the bracket can come loose. Engine mounts need checked too, if drivetrain is moving , you could be putting axles at a funny angle and causing a bind. lastly, you could have a miss doing this, i've been thrown off before too. if the car only shakes during acceleration it is unlikely to be a wheel/tire problem.if so, it would shake all the time. just some suggestions. good luck.
11-14-2005, 07:08 PM
#19
Member
Join Date: Jul 2003
Posts: 48
i have the same problem. I found the left transmission mount ripped off the mount causing the vibration during accelarations. Next gotta replace my axles and adjust the height on the j.i.c to low plus hard ride with 245/35/19 in front and 265/30/19 in rear...
11-15-2005, 12:13 AM
#23
Try stomping on the brakes (non ABS threshold, so the car doesn't naturally shudder=). If it didn't have to do with the drivetrain, it would probably happen symmetrically under hard acceleration/deceleration, right? Possibly not, but just an idea.
Of course... it probably is a drivetrain issue. Just thought about that for the tires.
On a slightly related note, a long time ago I test drove a ghetto E30 325e 5sp that seemed to have the same problem, except it was obviously the drivetrain and it was only in first and second. (obviously I passed on the car)
Of course... it probably is a drivetrain issue. Just thought about that for the tires.
On a slightly related note, a long time ago I test drove a ghetto E30 325e 5sp that seemed to have the same problem, except it was obviously the drivetrain and it was only in first and second. (obviously I passed on the car)
11-15-2005, 05:53 AM
#24
Nope, braking is fine. I am almost positive that it is either my motor mounts, or CV, or both. I also noticed that under light acceration, there is a odd noise that i can not describe, but it is comming from the right front of my car. I am going to take my car in for service on monday, and see if they will fix it under warrenty.
09-22-2007, 06:54 AM
#26
It turned out to be the axles. My car was slammed, and due to it being lowed so much, it messed up the axles. I bought brand new shocks/springs, and the car is much better now that it isn't as low. I did not replace the axles yet - they are quite expensive. But when I changed my shocks out, and it made the ride height higher, the vibration went away 85%. and thats a number i can deal with. 
If the axle ever fully goes out on me, I'll replace it then. Til that time, I can live with a slight shudder under accel.
If the axle ever fully goes out on me, I'll replace it then. Til that time, I can live with a slight shudder under accel.
07-16-2008, 01:48 PM
#27
Please dont telll me I gotta do my suspension over! haha. I am having this issue. Replaced the driver side axle, still shakes. Had the passenger side remanned, still shakes. beginning to think its my tranny/clutch... or i may need to replace the pass side axle all together....
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