Q: Q: My car is misfireing

asked by on

My 01 lesabre started misfiring. It all started when i parked in my friends driveway and my car beeped at me. I checked the dash and it said "check engine oil level low". Checked the oil and it was about a quart low. Luckily my buddy had some 10w-30 laying around which is what my oil cap said so we filled her back up. I started my car right after and bam misfiring. Now it spudders if I dont flutter the gas and sometimes tries to die when shifting from Rev to Drive. Threw engine codes- p0300( Random multiple misfire), p0336( Crankshaft sensor), and p0404( Exhaust gas recirculation "A" circut range/performance).

My car has 160000 miles.
My car has an automatic transmission.

Hi Rufus. Thanks for contacting us today. Of the three codes you’ve provided us tonight, the one that I would place most of my focus would be the crankshaft position sensor. In some cases, when the electrical harness of this sensor is loose, it can cause a random misfire (which is the P-0300 code) to occur. A dirty or faulty EGR valve can also create engine efficiencies as well. Unfortunately, there is no easy fix to fix this issue, without correctly identifying the root source of the problem. You might want to have a professional mechanic complete an on-site inspection at your location.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: My car is misfireing

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Misfiring

Engine misfires can be caused by many different problems and are generally caused by either a spark or fuel issue or in some cases, a combination of both. Spark related problems generally will result from things like ignition coils, crankshaft...

Q: I got a quote to replace the front pads on my 2005 Buick Lesabre limited. Would you install semi metallic or ceramic?

Hi Steve. Thanks for submitting your question. I've forwarded your question to our service department so they can look up your estimate and let you know which brake pads we would install. They should be contacting you via email soon....

Q: I don't know whether I should keep my car that I'm financing or just get it fixed.

Hello, the vehicle’s condition can fall that way depending on its service history. Because of the many problems you are having, I recommend that a certified mechanic (such as one from YourMechanic) an come to your location and perform an...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...