Skip the auto shop - Our mechanics make house calls

Q: Missing throughout driving range.

asked by on

I have a horrid miss in my 2.3 ranger. here is what I have already done... Replaced; IAC valve, TPS, Cam sensor, Spark Plugs, Coil packs x2, wire set, fuel filter, oil and filter change, EVAP valve. Checked; charging system, Fuel injector operation, EGR valve and flow sensor, manifold vacuum system including lines and gaskets... no leaks, EVAP system check.Was driving down freeway when it started to buck, took over a month for it to throw a misfire code on cylinder #3. Checked compression on all 4 cylinders and all are within tolerances. what else could be the problem?

My car has 344000 miles.
My car has a manual transmission.

The 2.3 L engine is a very dependable engine that has been around for a long time. If the misfire code is always for cylinder number 3 then you will have to look at the possible problems with that cylinder. Have the injectors switched from cylinder number 3 to another cylinder to see if the code moves along with it. If the problem moved to the other cylinder then the injector will be proven to be faulty. By performing this check it will help you assess whether the problem lies with the injector or cylinder. If you need some assistance with this, consider enlisting a qualified mechanic who can diagnose your misfire and make the appropriate repairs to get your car running smoothly again. Good luck.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: My engine has a rough idle. It spits, sputters, and stalls out. Could it be a bad injector?

Hi and thanks for contacting Your Mechanic. Yes an injector could cause an engine to spit and sputter or even stall out. Injectors over time can become dirty from the contaminate in the fuel tank that when passed the fuel...

Q: How do I test my fuel pump shut off switch to see if it bad?

Hi, thanks for your question. I'd be happy to help. You can do test your fuel pump shut off switch two different ways. The first is using a test light or volt meter back probe connector on one pink wire...

Q: Still overheating after replacing thermostat and radiator.

Hello, thanks for writing in. I suggest having the engine diagnosed by a mechanic to see if the cooling fans are working like they should, and if they have overheated, then see if engine head gasket is blown. I also...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...