2004 Buick Lesabre Running weird

2004 BUICK LESABRE
171,000 MILES
Avatar
SIRCARSALOT
  • MEMBER
  • 1 POST
Ok so I pulled the spark plugs out of my car (one at a time) to check them to see if they need to be changed (they need to be changed) after putting them back in and starting the car I noticed the "Service engine soon" light was on started to drive the car it drove fine then started sputtering and jerking for a few seconds then went back to normal then about 30 seconds later it sputtered and jerked again then went back to normal what do you think could be causing this problem?
Sep 10, 2013 at 8:46 PM
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
scan for codes and check fuel pressure with a gauge first.auto parts rent gauges and will scan for free
Sep 10, 2013 at 11:26 PM
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
also check to see ifyou put the plug wires on correctly. see pic
Image (Click to enlarge)
Attached Media
Sep 10, 2013 at 11:30 PM
Avatar
MADMIKE1735
  • ✓Experienced Mechanic
  • 951 POSTS
once you verify the firing order is correct, verify that you have the wires fully seated to your coil packs, and onto the spark plugs... the rear bank is kinda tough to access, so having the plug wire not fully seated is most common.... its happened to me before.... also, sometimes techs will swap coils, so the numbers on them no longer correlate to the cylinders.... i hate it when they do that, because it makes diag that much harder....
Sep 14, 2013 at 11:54 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle