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AMEDEE
AMEDEE, FORD TECHNICIAN
Category: Ford
Satisfied Customers: 24410
Experience:  ASE CERTIFIED TECHNICIAN ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector
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I have a 1998 Ford Explorer 4.0L SOHC. It began running

Customer Question

I have a 1998 Ford Explorer 4.0L SOHC. It began running rough and check engine light came on. It read PO302 and PO304. I changed all 6 plugs and wires, lie light went out for about 48 hours then came back on and is running rough, and hideous gas mileage. I have a new Ignition Coil, do you think it could be that? Oh, I also changed the fuel filter.
Submitted: 2 months ago.
Category: Ford
Expert:  AMEDEE replied 2 months ago.

Hello and welcome!

My name is ***** ***** I can assist you with your question.

Expert:  AMEDEE replied 2 months ago.

Are the same two codes in the computer after replacing the plugs and wires?

Customer: replied 2 months ago.
cylinders 2 & 4
Expert:  AMEDEE replied 2 months ago.

And do those cylinders have spark while the engine is running?

Customer: replied 2 months ago.
I am about to pull the wires off of the ignition coil and check.
Expert:  AMEDEE replied 2 months ago.

Ok

Expert:  AMEDEE replied 2 months ago.

Another possible cause would be low compression, bad fuel injectors and or an intake manifold gasket leak near those cylinders causing these cylinders to misfire.

Customer: replied 2 months ago.
Ok, so spray carb cleaner around intake manifold?
Expert:  AMEDEE replied 2 months ago.

You got it!

Expert:  AMEDEE replied 2 months ago.

I am glad I can help!

It has been a pleasure working with you. Please dont forget to honor your good faith deposit by rating my answer as "5 STAR SERVICE" for assisting you today.

Please let me know if you have any further questions.

Expert:  AMEDEE replied 1 month ago.

Hello! It's Amedee from just answer.

I am just checking in to see if you need any further assistance?