Wierd problem - Cadillac Forum - Enthusiast forums for Cadillac Owners

Thread Tools Search this Thread
Old 09-11-2017, 10:52 AM
Junior Member
Thread Starter
Join Date: Sep 2017
Posts: 1
Default Wierd problem

I have a 2007 CTS. I switched to premium fuel then back to regular. Almost immediately, it started misfiring. The check engine would periodically flash for a few seconds then go off. I went back to premium again and the problem stopped. I was running premium for six months and never saw the CEL again. Due to the gas situation in Texas, we had no premium and I had to fill up with regular and once again I felt it misfire almost immediately. The CEL is now solid. I am going back to premium but I am concerned that the engine may be damaged. I only feel the misfire when I accelerate to around 60 and its very brief. It has never stalled. I dont see any smoke or anything. I just find this odd that a car would react like this simply because I used a different fuel grade. is this normal for Cadillac? Should I just let the gas cycle through or does it require attention from a mechanic?
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
"Theft System Problem...Car May Not Restart" PCM/BCM Problem or Wires? JBeam4ME Cadillac Eldorado 19 11-14-2015 02:28 AM
HELP!! Wierd Noises.... Alfonzo Aluminum Block V8s 14 04-22-2010 06:33 PM
Wierd SRX Problem - Tensioner Pulley boliversmith Cadillac SRX 1 03-03-2009 02:25 PM
1997 Deville with DTC codes and a wierd battery bighank General Tech 1 11-13-2007 06:08 PM
wierd problem jpchris Cadillac Deville 4 01-11-2007 05:15 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 09:35 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.