Still fighting
Laughing Gas
Joined: Aug 2018
Posts: 934
Likes: 248
From: CA
Do you have the actual codes? What are you using the diagnose this things? It seems to be be cascading problems. Both the voltages and pressure issues need to be addressed or mostly you will have continuely worsening problems. You have replaced 4 injector but still have 2 known bad injectors. You have bad fuel pressure issues that can kill injectors. You have low voltage issues that can kill the FICM and in turn kill injectors.
Laughing Gas
Joined: Aug 2018
Posts: 934
Likes: 248
From: CA
Something that would really help is getting access to IDS and doing both an uncompensated power balance test and a cylinder contribution test. The first will tell which are weak or bad and the second will give the general health of the motor compression wise
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Cross-Country
Joined: Oct 2018
Posts: 96
Likes: 6
Do you have the actual codes? What are you using the diagnose this things? It seems to be be cascading problems. Both the voltages and pressure issues need to be addressed or mostly you will have continuely worsening problems. You have replaced 4 injector but still have 2 known bad injectors. You have bad fuel pressure issues that can kill injectors. You have low voltage issues that can kill the FICM and in turn kill injectors.
I understand the issue with low voltage and low fuel pressure. That is why I am here making sure that it is not something else so I do not just throw money down the drain. I constantly monitor FICM voltage and Fuel pressure to make sure both are with in safe ranges. That is why I replaced the FICM when I saw it was at 44.5V. Also why I asked if dropping into the 12v's was normal with trailer brakes and all accessories running or if I had an issue I needed to solve.
Thanks I really appreciate the help.
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Cross-Country
Joined: Oct 2018
Posts: 96
Likes: 6
I have done all the work on this since I bought it 2 years ago up until 2 months ago when I had it randomly die on me twice over the course of a week (see my other posts) then it started smoking. I brought it to the mechanic for him to diagnose. Due to random dying and smoking he replaced the FICM with a spare FICM laying around to try that. It helped but was still showing injectors out of spec. Said the worst injectors were on the right bank and recommended replacing all 8 but that I should at least replace all 4 on the right bank and hopefully the other 4 will last until I can save up more money. Those I will tackle myself when the time comes. When driving it home from the mechanic I saw the FICM voltage drop below 45v twice so I ordered a new FICM and installed it myself.
Logistics Pro
Joined: Jul 2014
Posts: 4,673
Likes: 532
From: Houston, Texas
SYK, passenger side injectors, starting in the back, are typically the first to go when fuel pressure gets weak, being farthest away from the pump.
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Cross-Country
Joined: Oct 2018
Posts: 96
Likes: 6
For the past 2 years I have been reversing pervious owners sins. They ran standard green coolant and non synthetic 15w40. So who knows what other issues they did not care about.
Fleet Mechanic
Joined: Nov 2016
Posts: 1,343
Likes: 94
New injectors sometimes fail. They come with warranties. Getting them from a Ford dealer usually gets you the most trouble free results.
Purchasing through through 3rd parties sometimes gives you questionable rebuilds.
Purchasing through through 3rd parties sometimes gives you questionable rebuilds.
Laughing Gas
Joined: Aug 2018
Posts: 934
Likes: 248
From: CA
I reread this and your older post trying to figure these issues out, and I am having a hard time wrapping my head around it. Please tell me if I got tbe order of events right. You started you started to have a loss of power and stall. Which code did you get P0603 or P0604? Both of which are internal memory for the PCM. Then you had low voltage around the same time. Followed by bad injectors on the odd side, and then low fuel pressure. Is that the basic order of events?
Logistics Pro
Joined: Jul 2014
Posts: 4,673
Likes: 532
From: Houston, Texas
Exactly. Married guys will understand how that can be.