it's your 'maf' = mass air flow sensor. easy to fix, pretty cheap at about $150 from rockauto.com or a good online source. do NOT buy from the caddy dealer! go to cadillacforums.com and either peruse or better yet, join the catera/cimarron group for some real in-depth answers to ALL things catera. trust me.
diagram of cadillac catera exhaust system
yes
Fuse box location on a 2000 Cadillac catera
ab the above the e-brake peddle
The 2000 Cadillac Catera is equipped with a 3.0-liter V6 engine, known as the LS1. This engine produces approximately 200 horsepower and 192 lb-ft of torque. It features a DOHC design and is paired with a 4-speed automatic transmission. The Catera was designed to deliver a balance of performance and comfort typical of Cadillac vehicles.
How do you replace the speed senor on a 2001 cadillac catera
how do you get ignition switch out of steering column in 2000 catera?
Under the dash.
There are many sensors on the Catera. The exhaust has two on each exhaust pipe. There are many more in other parts of the engine.
On the low rear of the engine. It can be accessed from under the car only. It is held on by a single bolt. Len
location location
Dex-Cool