Hard starts, gauges/stereo losing power, intermittent rough running. HELP!!
Everything was hunky dory up until a week or so ago....
The truck has had a little trouble starting for quite some time now, sometimes it fires up nice and smooth, other times it barely sounds like it's fired and then smooths right out, and then other times I will turn the key for 5 seconds or so, nothing happens, key off-on, and it will start with either smoothly or rough. Other than that, nothing noticeable.
First order of business. Last week during our first rain for a while, I was driving through town and the radio quit. Looked down at my gauges, and all read zero. My radar detector plugged into the cigarette lighter also warned me of high voltage. (not that a radar detector is scientific proof, just thought I would add).
No problems over the dry weekend, however Saturday night while driving on some dirt roads it happened maybe 3 times. All for short periods of time.
Tuesday afternoon I went out to start my truck, and it would crank and crank with no success. Ran the batteries a little low so I had a friend come and jump me. After some coaxing, the truck finally started.
Fast forward to Wednesday morning. Had to pull some trailers at work that day, so before I left the house, I changed the tune to my towing tune. It was a brisk 28 degrees, and with the previous days mishap I didn't have very high hopes, however the truck fired right up.
Now Thursday, go to start the truck for work, crank and crank, no start. Ran the batteries low again. So I took them off and into the auto store for testing. 1 came back bad, and the other had a 30% charge. I bit the bullet and bought two new batteries hoping that would solve the problem. It didn't. Crank and crank to no avail. Decided to return the truck to stock tune, and voila, within 2 seconds of turning the key it fired up nicely. Changed back to tow for work, fired up fine, and off to make money.
I have also noticed a significant increase in the truck "hopping" while I go down the road. When the truck locks into overdrive at low rpm, it feels like I'm driving over a washboard. I can see the tailgate moving up and down and can feel it in the driver seat as well. I would say it is worse around 50-65mph or so. If I coast down a hill, or accelerate quickly, the problem also goes away...until its flat ground and low rpm's again....it also smooths right out if I turn tow/haul mode on and it runs in 4th gear. I had a tire out of round a few months back, and that paled in comparison to this nonsense.
Now today, I had no problems starting the truck for work. The hopping did seem a little more violent on the drive to work, however. It was a rainy day again and on my first trip, as I'm returning to work, gauges drop to zero, stereo stops, and radar detector alerts me. I had researched this problem a little, and quickly thought to try the power windows while it was happening. They would not roll down. The gauges stayed off for about 10? minutes (the longest ever) and the battery light on the dash flashed during this time. The problem happened one more time throughout the day (not nearly as long as before).
After work I was excited to get home and do some troubleshooting/fixing, however I am at a complete loss. Checked all the fuses and relays I could that related to my troubles, and all were fine. Only bad fuse was a 20A square fuse for the "trailer tow battery charge". Which I have now replaced. Pulled out the fuse panel for inspection, and all wiring harnesses were tight, free of corrosion, and water free.
I did not clear DTC's after changing batteries yesterday, because I figured with no power, everything would reset. Maybe Im just old school. Today, after hooking up my scanner, I got the following:
P0263 - Cylinder 1 contribution balance
P0603 - Internal control module keep alive memory error
P1379 - Fuel injector control module system voltage high
P2269 - Water in fuel condition
Truck just rolled 200k, was bullet-proofed and inspected at 145k. New FICM from BPD at 180k. All engine mods are in my sig, truck has 35's on it that have been recently rotated/balanced.
I apologize for the long thread, but I need my truck for work and I am boggled. Any help is greatly appreciated.
2004 F-250 6.0L FX4
- AirDog II
- Swamps 48v FICM + Atlas 40
- 4" turbo back w/ single 6" Mitre Cut stack
- AFE Stage II Intake
- EGR Delete
- blue spring, and other updated goodies.
- Coolant Filter
-CAT ELC EC-1 Coolant
Tunes From:Vivian @ Quick Tricks, Inc.