What causes a truck to shake at idle?

[350Vortec]

Noticed it today. first time its ever done it. Sitting at a light, in drive. it didnt immediatley shake when i stopped. It took about 3 minutes. Then shook, then stopped when i drove away.

It has not done it since..... It was definitley a noticable shake, to the point where my sister and i looked at eachother and just said, wth?

I hope this is nothing huge. I cant afford that right now.

 

[Hodges87]

Did it shake like a bad misfire?

 

[350Vortec]

I honestly have never experienced a bad misfire so i wouldnt know...But it was a pretty violent shake. But has not done it since..

 

[Hodges87]

It could have been some bad gas, if it hasn't done it since. If does it again let us know

 

[Mike]

You're fine haha

 

[Greg]

misfire. i ended up having to put in a new coil, cap, wires and plugs when mine misfired.

 

[SCOTT_99]

Do you have a sound system? 12's and or 15's are known to cause shakage.

 

[tattooed4life]

Do you have a sound system? 12's and or 15's are known to cause shakage.

That's a good one!! lmao!

 

[SCOTT_99]

I hope this guy knows I'm joking.

 

[97sierra5.0]

I agree on the misfire ting. Cousins truck would "shake" on occasion.