Q: Q: my car is misfiring

asked by on

My car started sputtering and later the service engine code came on so i had the codes ran and they are showing cylinder misfiring the shop told me my dme is fried. I would like to get a second opinion . They did replace all spark plugs. do you think the dme could really be fried? My car has 70000 miles.
My car has an automatic transmission.

The DME is a possible failure for the misfire for your 2002 BMW M3. A complete pinpoint test for the codes would need to be done to rule out anything like coils or plugs. Your shop replaced the plugs and should have performed the pinpoint test to come to the conclusion that the DME is bad. Make sure you ask them what made them come to the conclusion it was bad, and what else may cause the problem since the DME may have been burned out by a short in the system. If you want to have an independent mechanic come to you to scope out the problem, a certified technician from YourMechanic can diagnose the misfiring issue and advise you on any repairs that are needed.

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 misfiring

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: I went to shop and theyve replaced my cat converter and trying to get back my old one that theyve pulled and they told me they can

Hi Paul. Thanks for contacting us today. In many US states, there are regulations about the proper disposal of mechanical parts that are potentially hazardous. The catalytic converter is one of these parts. So, I would agree with the mechanic...

Q: Q: Spark plug popped-out

It is common on this engine for the spark plugs to pop, and there are two typical fixes: either the spark plug hole could have a new insert put into it, or the head will have to be replaced. I...

Q: Car bucks, jerks, and idles rough - 1991 Ford Mustang

Hey there. This may be a sign of a failing idle air control valve. The idle air control valve is located on or near your intake manifold and monitors the air intake as it is mixed with fuel prior to...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...