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I have a 99 Ford Ranger xlt 3.0 flex. The 1st code was

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I have a 99 Ford...
I have a 99 Ford Ranger xlt 3.0 flex.
The 1st code was misfire cylinder 3 plug/wire. I replaced all plugs, all wires, power pack, electric idle air intake valve, fuel filter, MAGS sensor. Next code was misfire cylinder 3 New injector. Replace injector, next code was misfire cylinder 3 and 1. New injectors. 3 is brand new already I’m leaning towards this being a computer now since it is an intermittent problem since the car will run problem free a few days in a row then a random day of hesitation
Submitted: 3 months ago.Category: Ford
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3/24/2018
Ford Mechanic: EricFromCT, Ford Technician replied 3 months ago
EricFromCT
EricFromCT, Ford Technician
Category: Ford
Satisfied Customers: 4,713
Experience: 20 years dealership exp., ASE A1-A9 L1 L2, Ford Lincoln Mercury Senior Master, Diesel Certified
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Hi. Welcome to chat! My name is ***** ***** I am currently a factory dealer auto mechanic. I will attempt to assist you with your concern today.

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Customer reply replied 3 months ago
K
Ford Mechanic: EricFromCT, Ford Technician replied 3 months ago

To be honest what is more common is for the valves to start to tulip and not seal good when in the valve seat. That is very common on the 3.0'

Also what does happen on the 3.0 is if a headgasket is blown it can misfire randomly. If you are not loosing coolant then perhaps that may not be the issue for you. More likely the head needs a valve job.

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Customer reply replied 3 months ago
I’m getting a code for a new injector. All looks good there. It Is not a constant problem
Customer reply replied 3 months ago
Getting a code to replace a brand new injector and the valve system looks good
Customer reply replied 3 months ago
Is it possible for the computer that runs the fuel system to have intermittent issue
Ford Mechanic: EricFromCT, Ford Technician replied 3 months ago

What code are you getting?

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Customer reply replied 3 months ago
1st code was plug/wire
Changed a ton of stuff
2nd code after that was misfire in 3 change injector. Changed it. Now it says 3 and 1 and 3 is new. It probably runs bad 1 or 2 of every 7 days
Customer reply replied 3 months ago
Runs perfect the other days
Customer reply replied 3 months ago
My question is if you read my initial post you’ll see all the stuff I changed it’s an intermittent issue not a constant one. The engine runs absolutely beautifully when this is not happening what other parts could I possibly change without doing the whole fuel injector system because that’s not the issue
Customer reply replied 3 months ago
PCM?
ECU? Which runs the fuel/air system ?
Ford Mechanic: EricFromCT, Ford Technician replied 3 months ago

I am a Ford mechanic of over 20 years and I am trying to tell you the common problems and you are not listening. You already replaced all the parts and it is not fixed.

I feel I will not make progress here. I will open this question up to the other experts. Thanks. Someone should reply soon.

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Customer reply replied 3 months ago
To get a code on something that you have already changed doesn’t seem like the issue to me
Customer reply replied 3 months ago
To get several different codes for the same problem kind of seems like it might be a computer related
Ford Mechanic: David Craig, Auto Mechanic replied 3 months ago
David Craig
David Craig, Auto Mechanic
Category: Ford
Satisfied Customers: 5,754
Experience: owner/mechanic at 3D Automotive
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All you have done is replaced parts. I have not seen one time where you check ANY wires for voltages, grounds or signal, let alone high resistance. anyone can throw parts at a car.

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Ford Mechanic: David Craig, Auto Mechanic replied 3 months ago

just my opinion but you need to learn how to troubleshoot and not contradict the expert.

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Customer reply replied 3 months ago
Oh I didn’t know I had to test voltages to do a complete injector re haul like suggested by guy 1. Can u point me to refunds. Thanks
Ford Mechanic: Chris (aka- Moose), Technician replied 3 months ago
Chris (aka- Moose)
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