rough idle

Thanks for letting me in the group! Okay here we go. 2010 Lucerne 60,000 miles, second owner. I have had it since 49,000 October of 22. Noticed a little hiccup at 55/60 mph about to weeks ago. No engine light. Rough idle. Drops down to 400 sometimes. Before and after I threw parts at it. New...

2014 Buick Verano 2.4L 100,000 miles, almost on the dot I’m having a difficult time resolving this one. I’ve likely done several unnecessary things too but figured I’d just work through some checklist items. Here’s the scoop: Currently the car will have a difficult time starting up unless I...

Recently had repairs done on my 2002 Buick LeSabre. After a few days, the check engine light came on again. Didn’t think much of it until the car started jerking while accelerating, it had a rough idle and eventually started having stalling problems. I lose power steering and the “VOLT” light...

Since I don't know what part is causing the problem, I didn't know what to search for on this forum. So I'll just describe the problem.... I initially thought the starter was the issue, but my mileage has gotten bad, and there's a slight gas smell coming from the engine bay. Then it started...

I have a 1993 LeSabre Limited with a 3800 Series I. Recently I have been experiencing poor acceleration and an intermittent rough idle. I have replaced the following: Fuel Pump, Sending Unit, Trans Vacuum Modulator, Mass Airflow Sensor, Fuel Pressure Regulator, Intake Manifold Gaskets, Spark...

I have a 99 Lesabre with 160,000+/- miles on it. The radiator busted some months ago and the car overheated and ever since I have trouble with it. I will get it running and it will run for awhile and then something else will happen. This last round however I can not seem to get it going and...

Hello, I and a friend replaced the intake manifold gaskets and valve cover gaskets yesterday due to the gunk build up in the coolant system. When we got done and put everything back together, we started it up and it is idling rough. We figured maybe it was one of the sensors for the air intake...

Hi all, My 2011 CXL has a rough idle and my OBD link app shows my RPM level fluctuating(Dash Command rules! It's way more accurate than watching the needle for tiny movements) I've had the car throw a P0300 random misfire code(which cleared right away) and I worry that this could be the...

We have an intermittent problem. When I press on the gas, the car kind of hesitates--it goes very slowly, the comes up to speed. Two weeks ago, we noticed that there was also the faint smell of gas after the hesitation. The check engine light was never on. We took it to a shop--they replaced...