Weird idle issue 2025 platinum

[Devil68]

Just picked up a platinum. Have 300 miles on the truck. After the engine is warm, you can feel a shake in the truck at stop lights. It goes up in intensity and then back down. Rolls through it. Auto start is turned off. But if there is a cup in the cup holder you can see it shake progressively worse then stop and it does this repeatedly every three seconds. Any ideas.

 

[99WhiteC5Coupe]

Just picked up a platinum. Have 300 miles on the truck. After the engine is warm, you can feel a shake in the truck at stop lights. It goes up in intensity and then back down. Rolls through it. Auto start is turned off. But if there is a cup in the cup holder you can see it shake progressively worse then stop and it does this repeatedly every three seconds. Any ideas.

Bad batch of gas?

If not, warranty diagnosis and repair.

 

[jkp71]

Not normal. Dealer visit...

 

[Devil68]

Thanks that is what I figured

 

[Devil68]

Well the dealer had it for 5 days and said it is normal despite the loaner expedition not doing the same weird idle shake. No idea what to do. Brand new vehicle. Should have test drove it but trusted them and never thought that would be an issue. The one we wanted had to be pulled from another dealers stock.

 

[sanman28]

Just keep driving it. I bet it goes away.

 

[slow3v]

Drive it hard, get some fresh gas in it, really blow out the cobwebs so to speak.

 

[Fastcar]

I'd go for a fresh tank of gas. Did they check for water in the fuel?