Ford 6.0L Power Stroke Diesel :: Speedometer Fluctuates Wildly - Charge Light Blinking
Aug 9, 2016
Idiot light was on for battery charging issues. Sanded all ground connections. Soldered battery cable connections. Scan gauge showed sporadic inadequate charging. Installed new alternator. Scan gauge showed sporadic inadequate charging. Installed new interstate batteries. Brought old alternator to be rebuilt, rebuilder said it was strong as could be, needed no work, high output alternator. Reinstalled old high output alternator. Scan gauge now shows charge output of 13.9 V to 14.1 V
Idiot light still on, flickers like a loose connection, sometimes lights constantly.Occasionally speedometer fluctuates wildly, when fluctuating like this at idle, the truck will stall, so far it restarts...so far. When it has stalled the speedometer still fluctuates wildly for a few seconds truck will restart and seem fines but this will play out again next day or so. Occasionally ABS light comes on, occasionally water in fuel light comes on and they go away after abit, some times after a restart, not always though
Thought it might be cam positon sensor however not certain with the instrument lights also acting as they do. Have had one cam position sensor open circuit code once, about to trip out west to Monatana & Colorado and back home to Ma in a couple of weeks, hoping not to be stranded somewhere in between those places!
View 14 Replies
Advertisement
I drove the truck to work. It was fine. I start it up at quitting time and let it idle for a minute. When I pulled out of the parking lot and the od light started blinking. After about 8 miles I stopped at a red light. When the light turn green and I drove off the speedometer is working again. The od light flashed for another mile or 2 then stopped.
View 3 Replies
Speedometer not working and O/D light blinks, I have a 450 and a 250, 99 and 2000. On 450 this is an intermiting problem. Stop truck turn ignition off, restart and it all works now. Just started on my 250 and stopping and turning ignition off cures the problems for a few seconds, after i get moving the speedometer doesnt work and then light starts blinking again O/D light. Where do I need to start?
View 7 Replies
My 2006 F250 has a single alternator and recently the charge light is on intermittently and I have watched output voltage fluctuate between 12.4 to 13.5 ... sometime a .3 volt bounce one way or another for no noticeable reason.
So rather than buy a new alternator, I would like to replace the voltage regulator and put in some new brushes.
What are part numbers that I need to pick up?
View 6 Replies
What is MAP and what should it be? Mine is 15.0 KOEO and fluctuates from there to 25.0 or so when driving normally.
View 14 Replies
I connect the batteries and the overhead lights don't out, plus the theft light is blinking. Bad door switch maybe? I don't have the original Ford key
View 1 Replies
I have a 2005 F250 6.0l. I have no speedo and the ABS light is on. It was intermittent at first. It would go on and off if I hit a bump or braked quickly, but now for the last month the light has been on constantly.
I have tried the following to no avail:
1. check the harness to the VSS (rear ABS senor on the pumpkin)
2. replaced the VSS on the rear
3. check the lines from the vss for resistance and open short (and short to ground)
4. checked the HS-can network (pins 14 and 6 in the DLC to the respective HS-can + and - on the module) both have less than 5 ohms (about 3 ohms found) and no short.
5. checked the resistance of the network itself across pin 4-16 and found 60 ohms.
6. ran scans with OBD fusion for ABS (no abs found)
7. ran scans with forscan with laptop, does not detect ABS unit neither new or old module. note the TBC and IC both throw codes about not detecting the ABS.
8. check HS-can on the PCM as well as VSS wire from abs to pcm, no shorts or resistance.
9. check the number 11 fuse, (good) checked ALL fuses, only bad fuse found was trailer light number 20 engine bay. issue was a wire at the tailer connector was t-taped and not sealed leading to a short to frame.
10. checked the connector to the ABS module for power on both constant power pins, for open ground on both grounds, and power on run, all with in spec.
I've been diagnosing this for the last week, I am running out of things I can think of to check.
View 12 Replies
2003 f250 6.0 had a no start issue at first which ended up being bad connection/ chaffed wire at ficm.. ive replaced regulator with blue spring, new oil/fuel filter housing, new Motorcraft filters, and a orileys fuel pump.... guage i have reads 55psi at start up. While accelerating it obviously drops down, but it seems to goto 40 to 45psi then back to 50..then at times it goes back down while driving and stays around 40 45psi regardless if accelerating or coasting etc. Then after couple mins when i accelerate it will go back up?
View 10 Replies
I just got this f350 6.0l and I experienced an electrical problem with the trans gauge, started flicking a lil then go all the way up to over hit and check gauge light go on and my tow light starts blinking..
View 4 Replies
My friend has a 2006 F-450 and he said the Tow/Haul light blinks and the shifts are real slow. He has stopped towing now and it still drives.
I have read everything from toasted tranny to chaffed wire harness across tranny crossmember to the TFT sensor. My guess is the TFT sensor given his symptoms. If I am right the sensor is just to the rear of where the dipstick comes thru the tranny case. 1/4 turn and pull it out. Kinda like a bulb I guess.
Another question, is it necessary to replace the harness while in there as well? Is the Connection listed below the harness I am asking about? I found these parts on a thread from here:
Sensor (1): 3C3Z-7H141-AA;
Connection (1) 4C3Z-7G276-AA;
Gasket (1): 3C3Z-7C155-DA;
Fluid (10): XT-6-QSP
View 9 Replies
I was driving home tonight and stopped at stop sign. I took off and truck died and coasted to a stop. I tried to start but all it does is theft light blinks really fast and will not turn motor over. I tried to reset pat by following procedure I found on internet. Still no start. I then unhooked battery cables and left off for 15 minutes then hooked up but still no start and blinking theft light. I also tried spare key and still no start. What else can I do. I had it towed to place that just bulletproof my truck. Truck has been running great. I did not want to leave it on the side off road in the middle of country all night.
View 3 Replies
If I had to charge the batteries, Do you charge only the primary battery or do you charge both?
View 4 Replies
I am having a charging system issue. The alternator is making barley over 12 volts. With KOEO the battery light on the instrument cluster does not come on. I have already replaced both batteries and the alternator -before i noticed the battery light is not coming on.
View 2 Replies
2002 Chrysler Town and Country. My speedometer jumps wildly and then goes clockwise and rest without working. The trany hesitates and has a jerking when sitting in drive, and slow to shift into 2nd gear. We have replaced speed sensors, wiring and connectors, and now are thinking the chassis control box may be next.
View 1 Replies
I need the transmission speed sensor for my truck and I am getting a confusing array of Motorcraft and Ford part numbers. I have Motorcraft numbers DY1251 (Turbine Shaft Speed Sensor Assembly) and DY1229 (Transmission Speed Sensor). Not sure what the difference is between the two.
I've been having a recurring problem where, when my speedometer starts wavering, the truck will sometimes jerk, like maybe it's trying to down shift or a stumble of some sort. I've replaced the VSS in the rear diff (with Motorcraft) which cleared up the worst of it, but this problem still persists.
View 3 Replies
I was driving down the interstate with cruise set at 75 an my truck jerked twice an my cruise cut off. I tried to rest it but it wouldn't. Then I noticed my speedometer wasn't working. Truck will still crank an drive but acts like it has no power an will only at up to 16 psi of boost.
View 13 Replies
I've mentioned in earlier posts that my speedometer has been swinging around wildly off and on, and that on two occasions this has been coupled with a momentary engine stumble. This morning on the way to work it was doing it again but this time the engine stumble happened several times as well. I plan to check the speed sensor, but I wonder how this is also causing the engine stumble?
View 3 Replies
The other day i noticed my turn signal was blinking rapidly. I found that my drivers side bulb was burned out. I am trying to convert most of my lights to LEDs on my truck and figured that I'd replaced the tail lights with LEDs. After replacing both rear taillights with LEDS I still have the rapid blinking turn signal. Whats the deal? is it just the LEDS or what?
View 13 Replies
My 2003 ford taurus SES randomly has problems with the speedometer fluctuating from 0 to 10 mph upon idling. Sometimes the car will eventually stall out but always restarts without a problem. You can feel it "jerk" when changing gears or what I describe as a "hesitation" once in awhile. The car is an automatic and we have already replaced the relay and the voltage regulator/alternator - that has not workeded. I can't afford to keep throwing money into it replacing parts that don't fix the problem. What could be wrong?
View 5 Replies
I have 2005 ford excursion with 24300 miles. My speedometer is not working, engine light on , abs light one, overdrive flashing. I just changed speed sensor on rearend, but my speedometer still not working.
View 4 Replies
A few weeks ago i lost the speedometer and the abs light came on. 6 hours later when i got home I tried diagnosing it, but everything worked. Yesterday, the same thing. No speedo or odometer, abs light is on, and the OD off light is flashing. But the trans still works fine, going through all 5 gears and torque converter lockup. plus, pushing tho OD button turn OD off, hit it again and OD engages again. (the truck has a 5 speed allison trans in it) i put the scanner on it and got No response from module for the ABS module, the GEM/central timer, and Hybrid electronic cluster. There are no trouble codes, but it did show P0500 vehicle speed sensor A this afternoon on the way home, the speedometer and odometer came on and worked for .4 miles, then went out again. Where I should start?
View 9 Replies
