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 RepliesSpeedometer 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 RepliesIdiot 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!
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 RepliesSo my OD light started blinking on the way to work today. The fact that my truck dropped out of cruise control and then started downshifting out of OD on the freeway and back into OD started this ordeal. A quick scan of the dash made it easy to notice the OD light strobe, especially in the dark.
I've read some posts in the past in the event it happened to me since my truck is far from new. I had it in the back of my mind that I would attack the VSS sensor with some contact cleaner then replace if that didn't fix the problem. Doing a search revealed a far greater spectrum of culprits. In addition to the VSS potential I have read about transmission handles, chafed wiring in the steering column, and even the transmission itself. Instead of re-inventing the wheel I'm looking for those that have more knowledge on this issue than I do. Here are my symptoms:
1. Drove 5 miles from my house to the freeway with no issues.
2. Shortly after getting on the freeway I set my cruise control at 65mph.
3. Shortly after that my cruise control 'dropped out' and the truck started to slow down (obviously).
4. When I got back up to speed the cruise would not work which is when the out of OD and right back into OD started. It did that all the way to work (it would go out of OD and back in every couple of minutes or so).
5. Transmission hunted on surface streets too (25mph).
6. Turned the truck off, waited a couple of minutes, then started it back up. OD light is off and truck drives fine.
A couple of things to note. This is the first time anything like this has ever happened with the truck. Also, I have Torque Pro and my instantaneous MPG meter was at 0.0 the entire time this was happening. When I turned the truck off and back on, the MPG was displaying again normally. This is what made me thing something with the VSS connector.
I decided to search the issue and confirm my suspicions then found out that this could be a lot more difficult to pinpoint. Since it cleared up when I cycled the key I am ruling out a transmission issue (for now).
I plan on cleaning the VSS connector (that's the plug on top of the rear axle right?) and then pulling the cover off the steering column to see if I can see any chafed wires. Is there anything else to check out while I'm rooting around? I will add that my transmission handle has always been loose (I think the original owner used to drive with his right hand resting on the handle).
Funny shifts and OD light blinking. Have p0741 and p0743 codes. Checked wiring and no visible damage. Checked continuity on the purple-yellow TC wire from connector under hood and at Trans and their is none.?? Also will I hurt the Trans driving this way if the temp stays in check?
View 14 RepliesThis morning my 02 decided to turn the ABS light on, and start bouncing the speedometer. plus, the OD light is flashing when stopped with foot on the brakes, but the trans is shifting fine. Nothing changed on the truck except almost 3 inches of rain fell last night. Will AE tell me if the VSS is going bad?
View 14 RepliesSo here's the deal: My 2000 F250 has began to have the overdrive light blink when I am traveling at low speeds <40mph and it is accompanied by strange shifting (lower gear for a longer period of time). As soon as I get up to highway speeds the blinking stops and goes back to normal operation. But as soon as I go back to low speeds it happens again. When I put the truck in to park when it has the light blinking it revs it self to about 1200rpms then goes back to normal idle. This truck has 228k miles and is on the original transmission.
View 5 RepliesTook a 2 hour trip got of the interstate came to a stop light and the OD light starting blinking cut the truck off at the light fired it back up shifted in every gear like normal drove a little ways stopped at a light and OD started blinking again cut truck off back on light. Went away shifted great threw all the gears.
View 6 RepliesI have a 2000 f250 with the 7.3 and 181,000 miles on it, recently got stuck in the snow (in 2wd because i forgot to lock the hubs) and the rear wheels did alot of spinning. Now i randomly have the OD light start to blink, sometimes its a half a blink, sometimes it'll stay on for a few seconds, itll do it randomly while crusing down the road at a constant speed, also noticed my rpms fluctuate a tad at idle.
View 4 RepliesOK, truck is 2000 F350. I am heading on a 2000 mile roadtrip to Yellowstone for my wife's 40th birthday in two days. What was our rock of a vehicle is now causing me severe anxiety.
Over the last few days the truck has been difficult to start - almost stops turning over as if the batteries were low. So I ignored it because if I plug it in, it starts fine and if I drive it and it gets hot - it starts fine.
Tonight while driving - I noticed a high idle and then it went to normal - I thought it was weird and a few miles later at a stop sign it struggled at idle, sort of loping but not romping very high and the over drive light started blinking. When I got home when I went from drive to neutral it goes to high idle and then the overdrive light blinks. The first time it blinked it went off when I pressed the OD button - but now it continues to blink.
Would low batteries be the root cause of this? I will continue my search for blinking OD light but I thought I would get this in the queue in case this is bigger than I can handle. I have 48 hours to resolve this issue - leaving Wednesday early morning.
Using the hypertech speedometer calibration tool on trucks?
I'm running 37s and need to calibrate it. But I don't want to buy a performance chip with the calibration tool?
My speedometer was intermittent for a while, stalling, then moving, but never above the actual speed. Now I turn it on, but as soon as I move, it travels up to 38mph then stays there until I turn off the engine, then it hangs for 4/5 seconds, then drops to zero.
I replaced the VSS in the rear diff, and the one on the tranny. I checked all fuses. There are no other dummy lights or indications. Bad ground? I'm hoping I don't need a new gauge cluster.
2002 e350 7.3 diesel transmission... At 7 miles the speedo began bouncing and truck drops into second. Parked it 30 minutes, stated up no problem until 8 miles and the it started again. Have checked most of the electrical, changed speed sensor and transmission position sensor. Only error code 2-3 rd gear mismatch.
View 11 RepliesI've been having an electrical issue for the past few months that I've decided to address now that the weather is getting a little warmer.
What happened is the left turn signal was blinking fast, so I assumed bad bulb, and later that day it stopped blinking fast and now I press the lever down to indicate a left turn and there is a quite loud buzzing sound. Sounds like it's coming from where the relays are, but I've replaced them and the bulbs and still nothing has changed.
I've also replaced the multifunction switch to see if that was an issue, but a new one did the same thing so I returned it.
Running lights work all around, but now there are no left blinkers, and also my left brake light doesn't come on. Pulling a trailer I have the same problem, I had the plug tested and only 3 of the pins have anything to them.
I know nothing about auto electrical systems.
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 RepliesI 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 RepliesI 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.
I recently purchased a 1995 F150 4x4 with the 351 Windsor. Upon driving it I realized the speedo didn't work, transmission shifted hard,and OD light blinking. After googling my issue I found out it was the VSS. I climbed under the truck to find out the VSS isn't even plugged in. I searched for the wire but could not find it, only a spliced cable.....
View 4 RepliesCame on other day. No ses light or fault codes. What it means?
View 10 RepliesI have some LED strips i bought, some i am going to install under the door sills to light my nerf bars/steps. The rest i am installing under the bed rail to light the inside of the bed. I want them to come on with the interior lights. So when i hit the unlock button on my key fob, or open the door said lights will come on.
View 7 Replies