Skip the auto shop - Our mechanics make house calls

Q: Intermittent cylinder misfiring on a '98 Grand Marquis

asked by on

98 Grand Marquis, 72,000 miles. Intermittent mises happening more frequently. Number 6 cylinder misfiring started gamma procedure with 6 gallons in the engine. Bad gas. The spark plugs, coils, fuel injectors, sensors, all engine parts are all .... What should I do?

A: What you should do, if you don’t have the e...

What you should do, if you don’t have the equipment and you don’t understand it is to call a professional to take a look into your misfiring problem for you. Mechanics, like those from YourMechanic and myself, we’ve been doing it for a long time. We’ll put a scan tool on it and check live mode six data, and all stored codes.

You’ll get all kind of information like where misfires are coming from and how often. Those machines are so good these days that I could plug something in it, and it will tell me things like: cylinder number six has misfired 6081 times, and number two has only misfired five times, and number three hasn’t misfired at all. It stores everything. So, start there. There’s no sense guessing.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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: Why does my Tahoe start with the fuel pump relay pulled out or left in?

Hi there. Check to see what relay you have pulled. If indeed you removed the fuel pump relay and the engine still starts up, then check the oil pressure switch. An oil pressure switch will kept the engine running as...

Q: Car sat for years, trouble starting - 1971 Nissan 240Z

Hello. It sounds like the fuel pump is bad or the fuel filter is clogged. It is also possible that there is a lot of water in your fuel system. Dry gas or sea foam will need to be used...

Q: I have a 2000 Grand Marquis my girl crashed up the front end so I need some aftermarket body parts.

Billing question sent to CS for the cost of aftermarket parts to repair the front end after a crash.

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.