p0300

Alright, I've run in to an issue and am looking for where to go next. My kids car had a misfire at 160k so I swapped out the plugs, plug wires and coils (all OEM). The car ran fine for a week and started running like crap yesterday. I went out and checked it with a scan tool, p0300 with...

I am trying to fix my son's 2000 LaSabre, 3.8L, 106K miles. I am getting the dreaded P0300 (Random/Multiple Cylinder Misfire) . Here is what I have done to date. 1 coil test was borderline on the bad side - replaced all 3, EGR would not read correctly - replaced, replaced all plugs & original...

Hi everyone, I am at a loss with this car and need some help. Recently on the highway I got a steady check engine light. When I got home and scanned it I found P0300 and P0137. So I started running down the list of things that it could possibly be, I swapped coils, changed the wires and...

Been getting this code only now for a month. The problem is still here and I'm lost as to what to fix next..really don't want to go to another shop, did that and was charged $1,500 only for the problem to still be here. Was told from the shop that my "engine were melted and that I needed a...

So my sister was given a free 96 Park Avenue by my aunt.... It had been sitting for 3 years or so I believe, but it started up fine. Anyways, we drove it a bit, and it started losing power, (I wasn't driving it myself, so I can't be certain of exact behavior) we pulled into a parking lot...

I have a 97 park ave (not ultra). I have dealt with the hydro lock in the past. So I got that out of the way. A few days ago I went to start the car. It almost started but I slipped off the key. I then started it again. It started running real rough and acting like it was misfiring...

Haven't been on it a while guys - sorry life has kicked me in the nuts once again Left a senior position job in IT for a new job - was given guarantees - After 8 weeks - terminated via cell phone message - "just not working out" No meetings - no notice - no nothing - was told just 3 days...

First, Thank you for letting me be part of your group! I just purchased a 1996 Buick Century Custom with the 3.1 L motor and 64,500 miles. Sometimes it starts. Most of the time it will crank and crank but never start. The previous owners had the spark plugs and wires replaced. That didn't fix...

My 2000 LeSabre was throwing the following codes: P0300 - Random Multiple Misfire P0102 - MAF signal low The car was also showing the following symptoms: At first - car would misfire and buck/hesitate when engine was warmed up After a few weeks - car constantly misfired (felt like only one...

Hello I am new to the forums and just bought my first buick, I have had problems with chevy vehicles in the past and have grown up around fords (don't bother putting ford down every company has had good and bad vehicles I just happened to have family including my dad who worked for ford and I...

So for a few weeks the random misfire my '03 LeSabre was exhibiting was a bit of a mystery for not only myself but 2 different shops and about 15+ ASE tech hours. I went through all the basics of everything I read on this forum, other GM forums, or just about anything that would come up on a...