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truck not starting,has power but not turnover sound

insert key no bing sound but has power

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Pontuação 13
36 comentários

what type of truck re we dealing with and what year

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does the dash lights and the warning lights all come up? when you turn the key to start do they go out?

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Dash lights come on and stay on even when the key is in the off position. The key turns freely with no click. I have to disconnect the battery cable so not to draw down power.

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I have a 2002 Yukon Denali 1500 and it won't start but has a new battery and it clicks when I try to start what could that be

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I have a 08 gmc 2500hd it crank, battery dead install new battery won't start just click any suggestions

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This can be caused by a few things. To diagnose it you need to work backwards:

1. Bad battery or low charge, or bad connections at the battery terminals. If the terminals are full of white snowy looking stuff disconnect them and clean them up. If a terminal is loose (you can turn it with your hand) tighten it. Check the battery voltage. A fully charged car battery would read about 12.6 VDC. 12.3V is 50% charged. Less than that and you will quite often have a starting problem. Even if the battery voltage seems OK you should try jumping the truck to see if it'll start - a failing battery may have a reasonable voltage readout but very little capacity available, making it unable to start the vehicle.

2. No power to the starter motor or a defective starter motor. What's called the "starter" has 2 power connections - a large wire that provides power to the starter motor, and a smaller wire that powers the starter solenoid. When the key is turned to start the solenoid will engage the gear on the starter with the ring gear on the flywheel as well as trigger the starter motor to begin turning. If there's no power to the starter motor but power everywhere else you'd hear a "click!" noise when you turned to start but nothing else - ie. no whirring or cranking noises. If you don't hear that click (you might need someone to stand outside with the hood up to hear it) go to #2. The cause of this problem is usually one of 3 things - a failed starter motor, a bad connection between the battery and starter motor, or a blown fuse (if present) in line between the starter and the battery. A test for DC voltage between a ground point (eg. battery negative terminal or the engine block) and the large wire on the starter can diagnose a blown fuse (it will read 0V) but it can't be used to indicate if the connection or starter are ok. The simplest way to diagnose that problem is to clean the battery terminals and the large starter terminal (MAKE SURE TO DISCONNECT THE BATTERY + TERMINAL BEFORE DISCONNECTING THE STARTER CABLE OR YOU COULD GET A SEVERE BURN). If it still isn't starting take the starter off and have it tested (you can test it yourself if you can mount the starter somehow so it won't jump, connect jumper cables to the battery with the - cable going to the metal body/frame of the starter and the + connected to the big starter terminal AND the small solenoid terminal at the same time - but be forewarned that if the starter isn't firmly mounted it'll jump like crazy and can hurt you!).

3. If the starter isn't clicking you have a problem in the starting circuit that drives the solenoid. Start by disconnecting the solenoid wire (the small one) from the starter. Use a voltmeter to test for DC voltage between that wire and a ground connection (battery - terminal or the engine block) when the ignition is turned to Start. Make sure you're getting good, solid connections to ground and the wire or you'll get a false result. If you don't get around +12V there's a problem earlier in the circuit. Go to step #3. If you do get +12V clean the terminal on the starter and the cable and reconnect them and try again. If it still doesn't start you've got a bad starter solenoid.

4. Unfortunately this step requires a wiring diagram. In it's most basic form the way the starting circuit works is this:

Battery==>Ignition Switch START switch==>Starter Solenoid

However, all vehicles add other things in the circuit, with modern vehicles sometimes being very complicated. A (simplified) example would be:

Battery==>Anti-Theft==>Autostart==>Ignition Switch==> Engine Control Unit ==> Starter Solenoid

With fuses and other items in there as well, and with a number of parallel connections being made (eg. the ECU would also trigger the fuel pump, fuel shut off, etc. before triggering the starter).

The way it would be diagnosed is to follow the wiring diagram from the battery up through the ignition switch and out to the starter solenoid. There should be 12V at each point along the way (after the ignition switch the 12V would be present when the switch was turned to START). When you find the first point with no voltage the previous component is the problem area. However, if the problem is at the ECU or the Anti-Theft or Autostart the actual problem may be in a completely different circuit altogether - eg. it's not uncommon for some aftermarket autostart system to prevent a car from starting if the hood switch is damaged or not working correctly.

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Pontuação 12

19 comentários:

I changed my starter on my 95 silveradio now. When i turn. My key.on i get nodashlights and t he dam fbing wwont rven turn lver and something is draining my battery please help i. Have been. fighting t bis problem going 3 days

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I am having same issues. Did u ever find out wat the problem was?

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Ignition switch loose where it plugs in and usually dirty cleaned mine and put small piece of practice along plug in to secure it and problem solved

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New switch an starter all fuses are good no power to selonoide

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New starter an switch no power to selonoide when turn key

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My truck won't crank and after I turned the key off all the lights stay on until I disconnect the battery

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I just had this issue in my 08 Saturn aura. Take the key out and let the door ding and turn up radio. Then open your fuse box and pull relays one by one until radio goes off and door stops dinging. Your truck will start after that. Check whatever relay it stopped on and there is your problem. It's probably back feeding.

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2006 Impala the exact same issue it was a body module BCM body control module is this not the case for the pickup had to replace the body module have the module reprogram

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I was driving my 03 GMC Sierra 6.0 liter and hitting just dyed it has power has voltage to start it but it won't crank it won't even click and it shows on the dash that it's in second gear what is my problem

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I have an 04 expedition good battery good clean connections but no crank. I can put my key to the start position and uses jumper wire from the battery to the inside of a connector that runs down to the starter and I’ll fire up. Why won’t it with the key ?

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Mike did you ever figure it out? Mine does the same. Also, if I disconnect batter for a a while, it will crank. I'm thinking it's because it resets the computer, but give it enough time goes back to not cranking or clicking but the lights come on and I can jump it from relay to battery..

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When I disconnected the negative battery terminal and waited a minute or so it would start after that.

Another thing the blower motor would stay running even after taking out key and opening door waiting 6 hours and coming back to it and it would still come on, I turned switch off in between. Any ideas.?

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I had the same problem with my 2010 GMC Yukon after having a new transmission put in. Service traction control. Service stabilizer. Crank no start. Could not see what gear the vehicle was in. After reading reading reading. I came up with nothing. I finally checked all connections. The last connection I checked was the transmission wiring harness. It was loose. Luckily I did not spend a lot of money as I have in the past. I hope this helps anyone. I can’t wait to advise my mechanic whom charged me a diagnostic fee that did not give me the answer. He was about to do a wire bipods so that I could start my vehicle.

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went out with well one of her friends came over to bring her a pain pill well the friend tells me it ecstacy

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My truck lights come on but will not start it don't make no noice and I hooked up after market fog lights up and it threw a spark then it went dim and now won't start but there is dash lights like power but won't turn over to start

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I have a 89 ford Ranger.9.2.i have no power to the inside.the fuse box inside the cab does have no power in none of the fuses. No dash lights. No power at all inside the cab. Put all the fuses underneath the hood work.put a new fuel pump. fuel filter. solenoid. battery. Still haven't found the problem.

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