Guests - If You want access to member only forums on HSO. You will gain access only when you sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
Reynolds

Truck kills when I turn on the headlights???

10 posts in this topic

I am having some issues with a 2001 Ford F-150. My truck kills as soon as I turn on the headlights. Also, the truck will not start if the headlights are on. I replaced the front headlamp bulbs to no avail. Secondly, the ABS light is intermittenedly flashing along with the check engine light. I have gone through the fuses, but I have not located any that are out. I also tried unhooking/hooking the positive battery cable, but that also did not help. Has anyone ever heard of this same problem. I am guessing I need to have it brought it and hooked up to a computer.

Share this post


Link to post
Share on other sites

Sounds like your battery is shot or your alternator or both and you can check by getting the truck running and watch your amps guage and the needle might flicker and shoot not drop if the alternator is good. Have you ever jump started another vehicle recently? And just for kicks I would bring your battery to your local auto parts store and they can usually test them. Good Luck and let em know what happens

Share this post


Link to post
Share on other sites

My first guess would be a weak battery, bad/loose grounds. Other then that possible shorted wires. Weird electrical concerns can be tricky. Will it also die if you turn the heater fan and wipers on? How about just parking lights (first click on switch), disconnect both headlamp bulbs and see if it is the load that kills the truck, or just the fact that the headlamp switch is on. Do you notice anything else? When you said the truck doesnt start with the headlamps on, does the engine turn over, if it does, does it crank slow?

I have seen a quite a few bad gem modules cause weird electrical concerns, this may be a possibility as well. What would happen sometimes is the windshield would leak water and damage the module.

Share this post


Link to post
Share on other sites

I have seen a quite a few bad gem modules cause weird electrical concerns, this may be a possibility as well. What would happen sometimes is the windshield would leak water and damage the module.

I have had these mysteriously crank the vehicle over with no key in the ignition as well as turn on the windshield wipers whenever!

Sounds to me like there may be a grounding issue?

Share this post


Link to post
Share on other sites

Quote:
Also, the truck will not start if the headlights are on.

When you say this, do mean it will not crank over or the eng. will crank over, but not fire?

My first question asked when stuff like this is brought up would be "do you have a remote starter or after market alarm?".

Every thing above are good suspects though.

Share this post


Link to post
Share on other sites

The truck will turn over just fine with the lights on, but will not fire. It will start with the parking lights on. It will also run with the wipers and/or heater fan on. When I turn on the headlights with the vehicle not running, the left headlight (new bulb) is much dimmer than the right. Also, with the lights off, and the left headlight removed, the truck will not start.

I do not have an alarm or remote starter and the amp gauge is not flickering. I did however, jump start a vehicle back in January, and not long after, the "Check Engine Light" came on. Since that time I have only driven the truck on five or so occasions because I have been out on the road working. And it wasn't until the other night leaving the Cabela's parking lot that I noticed it would not run with the lights on.

I was doing some research last night on the internet and ended up finding a forum in which another guy described the exact same problems that I am having. Even right down to the left headlight being dim. Apparently a bad ground was a culprit.

I also found a few forums about the ABS light. The problem in those cases stemmed from bad wiring or a rear speed sensor.

Just want to thank you guys for the input and troubleshooting ideas!

Share this post


Link to post
Share on other sites

Reynolds keep us informed on what you find, if it is a ground, where is it bad, thanks!

Share this post


Link to post
Share on other sites

I brought it into the shop this afternoon. I will post the details once I hear back on the diagnosis.

Share this post


Link to post
Share on other sites

Turned out to be a bad ground on the left headlight. The ABS light was a wheel speed sensor issue. And, the Check Engine Light had something to do with a differential sensor.

Share this post


Link to post
Share on other sites

I'll take credit for that one! grin

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • Seems as if you would.  Where is the seam?
    • First and foremost Donald Trump is an enemy of the Truth,why would the whitehouse ask the FBI  to knock down recent Trump/Russia stories ????What are they afraid of ??? Could it be the the TRUTH
    • Trumpettes would make a great anchor for said boat. 
    • Man the Avs are a dumpster fire this year, looking at that team when we knocked them out of the playoffs they were loaded with young talent and had the potential to be one of the best teams in the league. Now their stars are gone or playing way below their capabilities and everyone else looks like AHLers.

    • Yet for all of our success in western medicine its hard not to look around and see people dropping like flies from numerous diseases and other health issues. Not sure if I am here to defend Juice or not but I will toss an alternative view into the pot.

      I think sometimes overlooked in the healthcare mess is stress, lifestyle and belief. Stress is basically a killer, maybe more than anything else, if one can reduce stress you will go a long way to being healthy and happy. Of course getting cancer is a very stressful event so that can spiral out of control. Lifestyle is similar, eat healthy and exercise and you can take control of your health on your own. Not that healthy people don't die but the majority of the health issues could be traced back to what we eat. I kind of believe food is medicine, you are what you eat and all that jazz.

      Belief is where I will catch the most flack but here is goes. Earlier in this thread people talk about placebo's, they are medical proof that the mind can fool the body. So if you have a strong minded individual why can't you do more? If one believes in the witch Dr. that is going to work for him, if one believes in western treatments that can work for that person. I know a guy who is still alive after the witch Dr treatment, we kind of ridiculed him in private at the time but for whatever reason it worked. The power of the mind can absolutely change things and this is scientifically proven, only our limited thinking can determine what we are capable of. I say go with what you believe and keep and strong and positive attitude. Maybe beating cancer is mental, then eat well, lower stress and take care of yourself and see what happens. I'm not saying don't use modern medicine but I wouldn't completely shut out the idea of using alternative treatments along side it and see what works for you.

      Good read here about a guy who went back to an island near Greece to die. No placebo here but something could be said for lowering stress and lifestyle changes.
      http://www.nytimes.com/2012/10/28/magazine/the-island-where-people-forget-to-die.html
        Another good article on the placebo affect, the man still died of cancer but you should read the story anyway because belief played a big roll in his short term cure and death.
      http://www.virsmai.com/blog/placebo-effect
    •     The DEA, in making its long-awaited announcement, said the decision to keep marijuana as a "Schedule 1" narcotic “is tethered to the science.” “Right now, the science doesn’t support [the reclassification],” Chuck Rosenberg, acting DEA administrator, said.        Still not completely convinced the earth is round...

    • This is what the Whitehouse does don't you know that? Gotta love how the most "transparent" president ever gets a free pass from the press and the left when it comes to his war on whistleblowers and domestic spying. Let me know if you ever find that US propaganda Nick, its right in your face every day. Not here to defend Trump, just pointing this stuff out.

      https://www.theguardian.com/us-news/2015/mar/16/whistleblowers-double-standard-obama-david-petraeus-chelsea-manning
      https://www.longislandpress.com/2017/01/14/obamas-legacy-historic-war-on-whistleblowers/
      http://observer.com/2016/11/snowden-fires-back-at-obamas-war-on-whistleblowers/
  • Our Sponsors