: 2002 Deville rough idle

07-07-14, 05:28 PM
Hello everyone! I have been having rough idle problems with my 2002 Cadillac Deville when I am at a complete stop. I tried changing the fuel injectors but that did not fix the problem... Are there any other suggestions of what the problem might be? Thanks!


07-07-14, 07:53 PM
Throttlebody cleaning, intake ducting air leak, MAF problems, FPR leaks, spark plugs, spark plug boots, ignition cassettes. Probably was not injector(s) in the first place.

Study the proper model and year group in the sticky post ^^^ "How to pull codes". Your car has its own built-in scanner/reader. Write down all found codes and return to the sticky to open the link to OBD-II code descriptions. Write down your code definitions and post it all here.

Cadillac Tech Tips.

MAF, DTC, FPR ???? The Acronyms sticky ^^^

07-07-14, 09:58 PM
:yeah: Clean the TB.


07-10-14, 04:59 PM
caddy2002, mine was as simple as the hardline vacuum tube to the PVC, it had a worn place on it. I was going to
McGuyver it but the lines and both end grommets were only $8 at my local dealer. pay up front-2to 3 days new!
If that's it buy a new one and electrical tape old one for a few days..
good luck Ed
also listen to these guys