[DJMurphy]

It's a big, rough 4 cyl. Some do it more than others. I've had new Patriot rentals that shake worse than mine.

For me the shake went away after having all 4 engine mounts replaced. The mounts absolutely need to be installed properly, they are left loose while the engine is allowed to idle in Park or Neutral, then torqued to spec. This puts them in the best position and alignment. My rear engine mount has been replaced twice to favourable results.

 

[heymrdj]

My new 2016 vibrates pretty hard at a stop light with the A/C running. No A/C, barely any vibration (no more than the average car). It's definitely an issue with engine load. It's the only thing my wife complains about our new Patriot.

 

[Jallenb11]

My 16 has less than 500 miles on it and I am constantly checking the tach to make sure it's idling high enough, sometimes feels like it's going to stall while sitting at the light.

 

[Ovride]

11' with 90,000 miles and it has a small vib to it and like everyone else says it's worse under load from the AC. I do have a strange noise when accelerating from 1800-2000rpm

 

[rich-dastardly]

It's the torque converter. Put it in neutral and it will smoot out. A/C raises RPM and puts more pressure on the on it making it even more noticable. Really shouldn't sit in gear for long peroids of time stopped anyway.

Sent from my SM-T800 using Tapatalk

 

[5speed]

Maybe this poll should specify the engine size. My 2.0 is easily one of the smoothest inline fours I have owned. Many times I've caught myself cruising along at 4000 rpm in second gear when I should have been a gear or two higher. Is it a function of engine size and/or transmission type? All I know is the 2.0 and 5 speed is super smooth.

 

[Ignatz]

5speed, I think the OP has an automatic/CVT. With a 5-spd either you're in neutral or have disengaged the clutch, so there is no load on the engine and hence, no vibration.

I think what everyone is describing is the normal load put on an engine when stopped at a light. Any automatic will probably have a vibration under these conditions. Since the transmission is still engaged it is putting a modest load on the engine -- add to it the a/c compressor and possibly the alternator because the fan is drawing power, and yes, its quite a load on an engine that is running at necessarily low RPMs. Running that slow it doesn't muster much power and the engine will be straining. I too have some vibration under those conditions; I know my spark plugs are old and I notice some misfiring as well. With new plugs I'll still get it.

 

[5speed]

Yes, I was trying to separate the culprit as to engine or engine/transmission.

 

[javylsu]

Our 2012 2.4L CVT Patriot is going back to the dealer today for this very issue. The vibration is sometimes so bad that the horn cover shakes likes a rattle can on the steering wheel. I'll let you guys know if they come up with any fix...


Sent from my iPhone using Tapatalk

 

[rich-dastardly]

Torque Converter, patriots have a low stall speed as someone mentioned earlier and it tries to engage at just above idle. The A/C will bring the RPM to just above idle and the torque converter tries to engage, but is fighting your foot on the brake. Not that difficult of a concept. If you put it in nuetral and it quits vibrating, must be the torque converter.

Sent from my SM-T800 using Tapatalk

 

[CraveSingletrack]

5speed, I think the OP has an automatic/CVT. With a 5-spd either you're in neutral or have disengaged the clutch, so there is no load on the engine and hence, no vibration.

I think what everyone is describing is the normal load put on an engine when stopped at a light. Any automatic will probably have a vibration under these conditions. Since the transmission is still engaged it is putting a modest load on the engine -- add to it the a/c compressor and possibly the alternator because the fan is drawing power, and yes, its quite a load on an engine that is running at necessarily low RPMs. Running that slow it doesn't muster much power and the engine will be straining. I too have some vibration under those conditions; I know my spark plugs are old and I notice some misfiring as well. With new plugs I'll still get it.

I have an automatic.

I've owned 20+ cars in my lifetime, (granted about half manuals.) Our 2002 impala with 250k idles smoother with a vacuum leak than this Patriot does when sitting at a light. In fact I've owned a lot of beaters over the years, and they all idled smoother than this thing does. My belief is it idles so rough because of a couple things, a very low idle RPM, (to help with emissions.) and the torque converter being very tight, (also to help with emissions.)

 

[CraveSingletrack]

Torque Converter, patriots have a low stall speed as someone mentioned earlier and it tries to engage at just above idle. The A/C will bring the RPM to just above idle and the torque converter tries to engage, but is fighting your foot on the brake. Not that difficult of a concept. If you put it in nuetral and it quits vibrating, must be the torque converter.

Sent from my SM-T800 using Tapatalk

^^ This ^^

 

[JeepCares]

Our 2012 2.4L CVT Patriot is going back to the dealer today for this very issue. The vibration is sometimes so bad that the horn cover shakes likes a rattle can on the steering wheel. I'll let you guys know if they come up with any fix...


Sent from my iPhone using Tapatalk

Keep us updated and let me know if you're in need of further assistance. Thanks - Kevin T, Social Connect Team

 

[javylsu]

I got a call this afternoon from the dealership - they are replacing the crankshaft pulley (covered under my extended warranty) and are going to see if that resolves the vibration...

 

[Ignatz]

Well, at least your dealership is trying to solve your problem. Some places would ignore you and hope you'll go elsewhere.

 

[Morty]

Mine will get a bit rough when stopping on a severe hill either up or down.

 

[javylsu]

Got the Pat back last night - replacing the crankshaft pulley seems to have solved the problem. I'm not getting any huge vibrations when stopped in gear. Seems to be running a little smoother/quieter too - not sure if it's placebo effect from being so overjoyed at no vibration... :grin2:

 

[Ignatz]

Hooray! epper:

 

[Lowball]

Got the Pat back last night - replacing the crankshaft pulley seems to have solved the problem. I'm not getting any huge vibrations when stopped in gear. Seems to be running a little smoother/quieter too - not sure if it's placebo effect from being so overjoyed at no vibration... :grin2:

Any updates on this???

 

[javylsu]

Any updates on this???

Quite a bit actually... Although the vibrations were reduced, the transmission kept whining loudly (not from the repair, but from the dealership's failure to properly diagnose the transmission problems I previously mentioned). The transmission once again started overheating and went into "limp mode" when my wife took it on a 30 minute drive on I-95 two months ago. I again dropped it off at my local dealership, where they kept it for over a week and then tried to give it back to me saying they "couldn't replicate the problem." After I threatened to get my attorney involved, they wound up replacing the CVT transmission. The vibration is back, but I honestly don't care anymore since the transmission isn't whining like a dryer from the 1970s and hunting for gears, and now seems to work properly. I'll deal with the vibration until we're ready to get rid of this thing. This has been the neediest, most unreliable vehicle I have ever owned.