need help cant figure out whats wrong

[flex128]

Hey guys I'm having an issue with my car as I drive I get a slight bounce its not constant but its noticeable and just random the car is at 111k miles its a 2006 M35X and another question can the U Joint on the front drive shaft be changed or do I need to go buy the entire drive shaft noticed a clanking sound and when I was changing my brakes decided to check it and its going to need replacing

[Rogue One]

[flex128]

I don't get it

[Rogue One]

You posted a long, rambling paragraph. You're not posting on Twitter, so please use punctuation. Most people tend to bypass these questions, mostly because they're incoherent.

Hey guys I'm having an issue with my car as I drive I get a slight bounce its not constant but its noticeable and just random the car is at 111k miles its a 2006 M35X and another question can the U Joint on the front drive shaft be changed or do I need to go buy the entire drive shaft noticed a clanking sound and when I was changing my brakes decided to check it and its going to need replacing

Hey guys! I'm having an issue with my car. As I drive, I get a slight bounce. It's not constant, but it's noticeable, and just random. The car is at 111k miles, and it's a 2006 M35X.

And another question. Can the U-Joint on the front drive shaft be changed, or do I need to go buy the entire drive shaft? I noticed a clanking sound, and when I was changing my brakes, I decided to check it, and I think it's going to need to be replaced.

[svard75]

Does the slight bounce stop shortly after or does it continue? Bounces are normal as long as it stops quickly. The m is a heavy car. Best way to test your suspension is find a smooth road and from stop accelerate hard then brake hard. If. You notice too much nose lift/dive it's time for new dampers. As for the u joint, our front driveshafts are recessed quite a bit underneath are you sure it's the driveshaft or one of the axles that drive the front wheels? Describe the sound. Is it a ticking noise when you shift from P to D or R to D?

[Double E]

Thanks Rogue. It is important to a submit a detailed technical topic in a way that others can understand the first time through.

[lovemycarM35]

When you say bounce does it feel like bad strut? what speed does it happen at are hitting bumps on the road

[flex128]

The sound I'm getting is a clanking sound when I go from P to D and it stops after the car rolls a bit . I lifted the car and when I looked at the U Joint it was a bit damaged.

As for the bounce its more of a slight stutter as I'm driving comes and goes randomly. My service engine light just went on today the code is P0430

[svard75]

The sound I'm getting is a clanking sound when I go from P to D and it stops after the car rolls a bit . I lifted the car and when I looked at the U Joint it was a bit damaged.

As for the bounce its more of a slight stutter as I'm driving comes and goes randomly. My service engine light just went on today the code is P0430

Ha you must be driving my car too! Code P0430 is catalytic converter bank 2 below efficiency. It means your passenger catalytic converter needs to be replaced.

The clanking noise from P to D is the rear axle shafts require lubing. It's the axle splines moving slightly that's causing the ticking noise. The fix is to remove the rear axles and applying polylube to the splines every 2 years or once the noise returns. I feel the vibration only during acceleration when it's medium. Light acceleration and hard acceleration do not present those symptoms. I still haven't been able to isolate the issue though.

How did you determine if your drive shaft is damaged? When you say driveshaft are you refering to the center drive shaft or the ones going to the wheels (Those are considered axles)?

[lovemycarM35]

The sound I'm getting is a clanking sound when I go from P to D and it stops after the car rolls a bit . I lifted the car and when I looked at the U Joint it was a bit damaged.

As for the bounce its more of a slight stutter as I'm driving comes and goes randomly. My service engine light just went on today the code is P0430

Like the motor is stuttering do you feel it in the seats, shifter, gas pedal? what speed does it happen everyday

[flex128]

Started yesterday random speeds I feel it on the gas pedal and seat. Yea its kinda like the motor is stuttering I'm thinking slight misfire.

[lovemycarM35]

Maybe this is all related to the error code

[svard75]

Maybe this is all related to the error code

I guess a misfire could be causing the P0430 however it had to have been happening for a very long time. As I said earlier P0430 is the passenger cat. It's shot and it could have been a bad plug or coilpack. In my situation it was just that. The gas was unburnt and flowed into the cat where it burned.

[flex128]

Ok sorry for the late update on this post. The Ujoint on the front Drive shaft can be replaced but you will need to bring it to a shop that does them for the fact that it is staked not held on with a clip so I just replaced the entire shaft. I am also not sending my old one to get rebuilt because I left it for so long that it is damaged beyond repair.

Now for the slight stutter it happens at certain positions of the throttle so I'm ordering new ignition coils to see if its cause by a misfire from them. Since that was what I had to fix for a few of the E series trucks that where having the same issue at my job.

[lovemycarM35]

Ok sorry for the late update on this post. The Ujoint on the front Drive shaft can be replaced but you will need to bring it to a shop that does them for the fact that it is staked not held on with a clip so I just replaced the entire shaft. I am also not sending my old one to get rebuilt because I left it for so long that it is damaged beyond repair.

Now for the slight stutter it happens at certain positions of the throttle so I'm ordering new ignition coils to see if its cause by a misfire from them. Since that was what I had to fix for a few of the E series trucks that where having the same issue at my job.

Hey any update on the stutter I'm have the same issue with my car it only happens at certain positions of the throttle and random you think it could be ignition coils my car only has 74K do you PLEASE LET ME KNOW

[flex128]

I'm Still waiting on my new coils to come in I will let you know as soon as they arrive and I replace them and let you know if that fixes the problem.

[lovemycarM35]

I'm Still waiting on my new coils to come in I will let you know as soon as they arrive and I replace them and let you know if that fixes the problem.

few more question how many miles on your M? and how much were the coils? what are you doing about the error code you got I'm not getting a code
Thanks

[Ilya]

Easy way to test a misfire is to unplug each coil pack while the car is running. If the car starts to run rough, you know that coil packis working. Then, once you determine which coil pack(s) are bad...move them around and see if the issue follows the coil pack. For all you know, it may be a wiring issue and not a coil packissue.

[lovemycarM35]

Easy way to test a misfire is to unplug each coil pack while the car is running. If the car starts to run rough, you know that coil packis working. Then, once you determine which coil pack(s) are bad...move them around and see if the issue follows the coil pack. For all you know, it may be a wiring issue and not a coil packissue.

Are you referring to the wires that connect to the coil pack? also If a coil pack wasn't working wouldn't the car run rough all the time? this seems to happen at certain position of the throttle and it's random and it idles smooth

[lovemycarM35]

Does anyone know where to get these coils if in fact that's the problem? and should I get OEM

[svard75]

I would start with the cheapest fix first. Did you check your plugs? Regap them. Label the wires prior to taking them off. Then look to getting your injectors serviced and finally coils.

[flex128]

I'm Still waiting on my new coils to come in I will let you know as soon as they arrive and I replace them and let you know if that fixes the problem.

few more question how many miles on your M? and how much were the coils? what are you doing about the error code you got I'm not getting a code
Thanks

My M has around 113k on it now. Each ignition coil is around $100 are cars use 6 I'm changing the entire set . And no it won't always run rough it only happens when I give it a certain amount of throttle. How I tested was by just driving I gave it gas slowly till it did the misfire then I kept giving it throttle till it stopped after a certain point I then tried to cause it to misfire at different speeds and it did it no matter what speed as long as I'm giving it a certain amount of gas i get it if I'm above that line it will stop.
As for the error code I'm not to worried about it that code is nothing more then either a bad o2 sensor on the secondary cat or the catalytic its self which isn't really important unless your worried about passing emission testing I'm planing on removing them anyway so no need to fix that issue.
I purchased this car used which wasn't a smart idea some people don't know how to maintain a vehicle properly and things that normally wouldn't fail get messed up I'm changing all the sensors and allot of the other components bit by bit so i don't mind the work I do it all my self so i save money if this issue persist my next step will probably be an engine swap these vq35de are cheap and easy to find with low miles

[flex128]

Svard75 makes a good point if you haven't done all the cheap fixes first don't replace the coils I've done everything but the injectors service which i would prob just replace the injectors since mine have allot of miles with most likely some cheap gas and crud build up

[lovemycarM35]

Svard75 makes a good point if you haven't done all the cheap fixes first don't replace the coils I've done everything but the injectors service which i would prob just replace the injectors since mine have allot of miles with most likely some cheap gas and crud build up

Let me know how the coil packs go then I'll take it from there I just don't want to start throwing money at this may not be either coil or plugs if I take it to the dealer I'll get screwed

[lovemycarM35]

Svard75 makes a good point if you haven't done all the cheap fixes first don't replace the coils I've done everything but the injectors service which i would prob just replace the injectors since mine have allot of miles with most likely some cheap gas and crud build up

Let me know how the coil packs go then I'll take it from there I just don't want to start throwing money at this may not be either coil or plugs if I take it to the dealer I'll get screwed has anyone else have had any issue with the ignition coils on there M doesn't seem like a common issue Thansk

[Larz]

Svard75 makes a good point if you haven't done all the cheap fixes first don't replace the coils I've done everything but the injectors service which i would prob just replace the injectors since mine have allot of miles with most likely some cheap gas and crud build up

Let me know how the coil packs go then I'll take it from there I just don't want to start throwing money at this may not be either coil or plugs if I take it to the dealer I'll get screwed

Actually, if you take it to the dealer, you'll get an answer. You don't have to have the repair done at the dealer.

[lovemycarM35]

I'm not taking to the deal if there was an SES light I would take it to auto zone and get the code pulled then I would have an Idea of what's wrong

[Ilya]

Easy way to test a misfire is to unplug each coil pack while the car is running. If the car starts to run rough, you know that coil packis working. Then, once you determine which coil pack(s) are bad...move them around and see if the issue follows the coil pack. For all you know, it may be a wiring issue and not a coil packissue.

Are you referring to the wires that connect to the coil pack? also If a coil pack wasn't working wouldn't the car run rough all the time? this seems to happen at certain position of the throttle and it's random and it idles smooth

Yes, unplug each coil pack one by one (unplug, see if it changes, plug back in and go to next). An no, a faulty pack could randomly misfire. Had that on my Maxima.

Problem is, on this car, the packs are hard to get to so be careful with the car running!

[lovemycarM35]

Hey any update on those coil packs I really need to know I'm getting ready to do my plugs

[spydaman617]

i have that same issue it's a quick stutter around 40 sometimes and 80. it happens more when the roads are wet for me it as not happen for a month for me now but i really would like to know what causes that hope it's not a early sign of transmission issues