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Faulty starter wiring would be the first place to look. R&R if need-be or just do a thorough check of all wiring. If nothing is apparent, move to the ignition.
Does the truck start and run? If so, does the starter continue to cycle as you're driving?
Bad starter relay possibly. To troubleshoot, there is a tan/red wire that supplies the start signal from the key switch/DTR switch. When the key is turned to start, this wire is hot. Any other time it would not be hot. Pull this wire off of the starter relay with the battery hooked up. If the starter stops with this wire disconnected, then the relay is good and there is some problem with the tan/red wire. If the starter still runs with this wire disconnected, the relay is bad. Good luck!
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John, aka KingRanchMan02
`02 F-150 King Ranch SuperCab
Charcoal Blue/Arizona Biege, 5.4L 3.55 LS, 4x2, Diablosport Predator Programmer, K&N filter. FTE Ride of The Week, 4/20/09 !!!
`08 Mercury Sable Premier, 3.5L Duratec, 6 speed auto
if i start the truck with the key it will keep trying to start it , but if i put it in drive it stops also when its tring to start the truck it doesnt actually start it just turns over
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'-54 F100 90% 'restored' w/ a '70s 302 2bbl and C-6 dk. gray/black repainted, custom tilt nose, -'57 F100 all orig. unrestored TX truck, NR.
PARTING: '54 f350 truck all stock original, also a '69 Fairlane coupe HT with old 429 C-6 and 4 link custom tube welded 9" narrowed rear setup, also for sale from it.
i have a 97 f150 that as soon as i hook up the battery the truck tries to start itself what would cause this
I have a 97 that started itself tuesday morning i went to get in wouldnt start so i took my wifes car ten min later she called and said truck went thru garage cost me 658 dollars in damage to garage door put scratches on truck! Its due to faulty wiring from starter to the solenoid on firewall these need replaced asap to keep from this happening to anyone else!
You just eliminatd the solenoid. If the nuetral safety switch dropping the power from the red/tan wire stops the starter cranking then the solenoid is working properly and the problem is BEFORE the nuetral safety switch. I would start at the switch personally.
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Rob
Learn from your parents mistakes.......... Use birth control
i have a 2001 ford and it want to try and start its self when i turn the lights on but then the radio goes out and the heater comes on. I tried to replace the solenoid on the fire wall and now i cant get the stater to stop unless i take the wire that runs to the alternator off? and so i got under the truck to check the starter and there is a solenoid on the starter too? Can anyone help?
The ignition switch closes power to the start relay.
This relay has heavy contacts to pass current to the starter motor.
They often burn closed from use.
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I have a problem with the poster who left his truck in the garage and it started by it'self and ran through.
First, if an automatic trans and left in Park it cannot just run away.
Left in neutral, the trans still will not move the truck.
Left in any other gear, the starter will not engage.
If a manuel trans and left in gear, yes the truck will move.
For a fault start, the key would have to be in the ignition with a PATS system in play and a the igntion left in the Run position.
To many safetys to defeat for a self start and run, to happen like that.
Question is, in what condition was the truck left in for any possability of self starting 'and moving' even if there was a fault present?
I have never heard of this before, happening as the poster discribed.
The ignition switch closes power to the start relay.
This relay has heavy contacts to pass current to the starter motor.
They often burn closed from use.
************************************************** *****
I have a problem with the poster who left his truck in the garage and it started by it'self and ran through.
First, if an automatic trans and left in Park it cannot just run away.
Left in neutral, the trans still will not move the truck.
Left in any other gear, the starter will not engage.
If a manuel trans and left in gear, yes the truck will move.
For a fault start, the key would have to be in the ignition with a PATS system in play and a the igntion left in the Run position.
To many safetys to defeat for a self start and run, to happen like that.
Question is, in what condition was the truck left in for any possability of self starting 'and moving' even if there was a fault present?
I have never heard of this before, happening as the poster discribed.
Really....How does it put itself in gear or even crank with all the lock out features built into an automatic or stick. Since I have been in the garage door business for 30 years, I have actually heard this from customers many times....
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98 Ford F-150.4.6.4x4. Extended Cab 8' Box
2000 Mustang Gt, Black on Black, 100% stock
Better ask them some questons and find out the real truth.
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Hell ,the power windows are even sensitive to getting a childs head or hand caught in a closing window. They auto stop before any real injury is done. Few know this feature is designed in.
This is a lot like the cars that accelerated by themselves out of control a couple years ago.
It was all a farce in the end.
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