My car gets a weird shaking and vibrates alot when i lug the motor and at lower rmps.

I think its my motor mounts but how can i tell?

 

whats lug'ing a motor?

 

Does your car wheelhop?

 

Isn't that typical when you lug the motor?

 

hit the gas in neutral with the hood open, if the motor raises too much (don't know the exact amount, but mine looked like it wanted to come out of the engine bay the first time on the dyno), then they are warn out. Or you could drop the cross member and actually pull them to see if they are ripped or dry rotted.

 

i opened up my hood and put the car in drive but hold the brake look through the gap between the hood and the windsheild if you motor moved almost 4" like mine were yours are definitly gone

 

well i dont realy mean luging, i mean if imin 5th gear at about 2k, and i open up the throttle the car shakes pritty bad.

.......It all started when i bought the peice of junk warpspeed superflow felx y-pipe.

Basicly the thing didnt flex and i think now it fuKed up my motors mounts or something??

Now the superflow is off but the car still shakes (not as much but still bad)

I must add again that warpspeed makes terrible products

 

Just powerbrake the car. put it in drive, hold the brake, and hit the gas and let off as soon as you hit the gas. have someone watch the motor movements. then put car in reverse and repeat. you'll def be able to tell by watching the motor if it supposed to move that much.

 

Explain to me how a y-pipe can mess up motor mounts, I'd LOVE to hear that lecture . A ypipe will not f' up your motor mounts, so dont blame it. A more logical scenario would be > your bad motor mounts made the motor rock so much that it damaged the flex section on the ypipe, so you ended up with not only your motor's rocking, but also a rattling ypipe.

And that shaking you say you feel on 5th gear at 2k when you floor it is called bugging. Meaning either your motor isn't in the best condition (spark plugs ok? ever changed that KS???????) or like in my case, not enough bottom end power. Remember that depending on what mods you have, the powerband gets moved around. In my case my low end is 'alright', but my "powerband" is 3.5k up. So below 3k when I floor it it'll bug a little, that's nothing "wrong with the car" it just happens

 

Some movement is Normal

.. How much is not Normal?? mine tilts abit but not rocking or looking to fly out

 

please dont post if you have no knowledge of cars!! ^^


No it has nothing to do with the motor, the car still has ***** like ever before.

Dont tell me what im feeling cause you dont feel it, I DO.
What do you mean i have bad motor mounts damged the flex??
you are a idiot, the car was fine untill i put on the y-pipe!!!



let me explain how the superflow y-pipe messed up my mounts



The superflow flex is not your regular flex section , it is a ball joint, the thing barley moves if you force it with your hand!! it doenst give at all


Basicly it messed up my motor mounts becuase it was like have a exhasut with no flex sction, and it cause major vibration throughout my car.

This is why the flex section is important


also its kinda my fault because i drove the car around with the peice of junk flex (i have no other car so i had to drive it)

 

I'm really sorry for somewhat hijacking this thread, but i'm sort of getting the same 'bogging' feeling as you, but it's only when i'm in, say, a parking lot in 1st or 2nd (6-speed)....i can't take off or apply any throttle or else the car will violently jerk back and forth...is this a motor mount issue, or is it normal?

again, i'm sorry for kinda going OT...

 

ya mines does it to but it is probubly worse cauwe mines doesit in everygear. but my car isnt realy bogging, it just shakes like its bogging but it still has power, does yours still lfeel powerfull?

 

your motor will jump around. when shigting gears youll hear a loud CLUNK!! and if you have someone shift gears in the car and you are looking at the engine it will look like it it going to hop out of the bay and kick your *** for all that cheap motor oil.

 

OMG people.

A y-pipe will not do anything to your mounts. No flex section in the world is stronger than your motor mounts. Bad motor mounts + wheel hop can rip a flex section in half.

The "bogging" feeling you guys are describing when stabbing the throttle at low rpms is normal. It is not the motor mounts, that does not mean your mounts aren't bad but the "bogging" is symptom of being at too low of an rpms with too much load on the motor.

 

i dont kow anything about cars... I'm not the one blaming my motor mounts' situation on a ypipe . Look I'm not trying to start an e-fight, so dont take critisism as insults. We learn from our mistakes remember? But its just unlikely that even a ball-jointed flex section is going to damage something like motor mounts.

When I changed my clutch, I left the mounts attached to the motor but unbolted them from the x-member. I could dangle the mounts as if they were hanging from a string. The through-bolt sleeves were separated from the rubber around them. Before I ASSUMED they were worn out, its not until then that I saw how bad they really were. So could it be possible that they were bad from before, but it wasn't so obvious to you until the ypipe was put on? The extra power from a ypipe would cause the motor to rock more than usual. Get urethane motor mounts from Cattman and you'd be set

 

My motor mounts dont seem to be bad, the engine stays in place pretty good, BUT whenever i launch, i get terrible wheelhop, If i launch really hard, the tires will spin for a while and then start hopping and the entire car will shake terribly...Could it be something besides the mounts that cause such bad wheelhop?

 

If your engine falls out then the mounts are bad.....lol just kiddin good luck figurin it out though!

 

wheel hop (as far as I know) can be caused by bad motor mounts, or poor condition tires/ just crappy tires that dont grab. But motor mounts are the more likely out of the two, I'm done here

 

But im worried cause its more than just a bogging, the car shakes pritty bad as if it was about to blow up, as the rpms increase from about 2-4k the shaking is pritty bad, then the shaking is still there after 4 k but it isnt as bad because the motor is reving faster so its a lighter shake.


-What would happen if lets say a exhaust didnt have a flex section?
cause that mess up the mounts?

Regaurdles of what broke the mounts, im not even sure if they are broken, cause i tested the holeding ebrake way and the motor moved but it didnt seem that bad?

What else can be wrong? any thing with the tranny or something?

 

lol, guess I'm not done here. Damn I didn't think it was that bad. The only things I could think of would be
- Timing related sensors, Crank and cam Pos Sensors. But also if they were bad, the motor wouldn't start, so that can't be it.
- TPS. Check to see if its calibrated correctly. If it were bad/ not in spec, it would allow the motor to start (up to a point) but the motor would run like crap
- Missfire. Are all the coils good? Check coils, pull the sparkers and see their condition.
- Injectors not firing. But I would assume if one wasn't firing, the ECU would throw a CEL for "Left (or Right) bank running lean/rich"
- MAF is also a possibility. If you got a friend with a 4th gen, even better if its the same yr as yours just in case, try swapping MAFs and see if it makes a difference.

 

Friend of mine told me it could be my axles??


is that possible and how can i check?

 

I'm not sure if a bad axle is going to cause all that vibration specifically on the low end at WOT. But you'd usually know if:
- Try to make tight turns (like a u-turn) both left and right. If you hear clonking, one or both of them are bad.
- Look at the boots, both innner and outer on each axle and check for any tears (if they're torn there'll be axle grease all over as well)

Good luck

 

Thank you!!!

I dont know why anyother 5 speed drivers didnt pick up on this. There is no power at full throttle at 2K. 5th gear
isnt a power gear and cant be expected to act like one. 5th is for crusing really if you need to pass and your under the 3K
range then shift down. As for your y-pipe you recently bought it, hopefully then will refund or exhange the item.

 

Still havent figured out the problem, i have one more idea of what it could be but i hope its not it.

Just before the y-pipe install, i installed my exedy stage 1.

I didn't resurface the flywheel or buy a new one.

Could the feeling im getting between the 2-4k rpm range be some kind of clutch cahtter??

The clutch grips amazing tho, can chirp 3rd if i want it to, car has lots of *****, tires break loose in first gear with outa problem.

Can this be my clutch or the install?? Cuase i figured if something was wrong the car just would drive at all.....

Any ideas are welcome!!


O and im also gettinga a bank 1 o2 sensor code if that matters.....

 

wheel hop can be attributed to bad axles, i witnessed this first hand. new axles made my power smoother and no wheel hop