Truck not running smooth!!

[BigWhiteBeast]

Hi so these past couple days my 2001 Chevy Tahoe has been acting weird. Before work 2 days ago the truck didn't want to start. when it did start it dropped to 200 RPM's. I turned the truck on and off about 5 times before it actually started. on my way to my buddies house today, the truck would drop to about 350/400 RPM's. Then when i pulled into the driveway it dropped to 150 RPM's then went back up to 600 RPM's. I then let it sit and it shut off. I run Full Synthetic Oil with a Premium oil filter. I also have a Gibson Cat Back Exhaust. i have no idea what it could be. the fuel pump was replaced about 1 1/2 ago but hasn't caused me any problems.

 

[bottomline2000]

I'm going to vote cats being clogged or starting to clog. you can check the exhaust pipe before and after the cat with an infrared temp gauge and if there is a big drop in temp chances are they are clogged.

 

[BigWhiteBeast]

I'm going to vote cats being clogged or starting to clog. you can check the exhaust pipe before and after the cat with an infrared temp gauge and if there is a big drop in temp chances are they are clogged.

I got it checked out. It was the ground to the truck. Very easy fix. Thank you for your help tho I appreciate it.

 

[ccapehartusarmyINF.(ret)]

I got it checked out. It was the ground to the truck. Very easy fix. Thank you for your help tho I appreciate it.

LOL i was about to say the same thing i just had the same problem bad ground causing to run all funky

 

[afpj]

I got it checked out. It was the ground to the truck. Very easy fix. Thank you for your help tho I appreciate it.

Which ground? There are a few floating around on these rigs.

 

[SLCHOE]

Probably the ground from the engine block to the firewall. I remove and clean mine every couple years. A lot of the computers tie into the chassis ground inside the cab.