02-24-2021, 12:05 PM
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#1
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Starts by itself with no key in
99 Limited with 270k. 4R had been sitting for a few day, then all of sudden what my kids say is that the alarm? never used it, started to go off, lights started blinking then everything turned off.
The battery was dead, so I charged it and as soon as I reconnected the battery terminals the wants to start with no key in the ignition.
I pulled the starter relay and it stopped. Put the relay back in starter engages (No key in the igntion) and motor is trying to turn over. I can turned the key and it starts and runs, but with what sounds like the starter is engaged. I can put it in drive and the starter disengages. Put it back in Park or N and starter reengages.
ANY Help would be great.
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02-24-2021, 12:46 PM
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#2
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Senior Member
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Quote:
Originally Posted by maddss
99 Limited with 270k. 4R had been sitting for a few day, then all of sudden what my kids say is that the alarm? never used it, started to go off, lights started blinking then everything turned off.
The battery was dead, so I charged it and as soon as I reconnected the battery terminals the wants to start with no key in the ignition.
I pulled the starter relay and it stopped. Put the relay back in starter engages (No key in the igntion) and motor is trying to turn over. I can turned the key and it starts and runs, but with what sounds like the starter is engaged. I can put it in drive and the starter disengages. Put it back in Park or N and starter reengages.
ANY Help would be great.
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Sounds like you have a stuck starter relay or a short to power to me. Try changing out the starter relay and see what happens. Here's a 2000 electrical wiring diagram dropbox. It's not for your year, but it's pretty close for most things. Dropbox - 2000 4Runner Electrical Wiring Diagram (EWD383U) - Printable - Simplify your life
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2000 SR5 V6 Manual 4WD https://www.toyota-4runner.org/3rd-g...biography.html
2000 Limited V6 Auto E-Locker Sold 3/2022
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02-24-2021, 12:57 PM
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#3
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Member
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Join Date: Nov 2016
Location: Annapolis
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Real Name: Scott
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Member
Join Date: Nov 2016
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I switched out the starter relay with another one. And it still does the same exact thing
Any idea on the short, where I should start looking
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02-24-2021, 01:07 PM
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#4
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Join Date: Aug 2014
Location: Gainesville, Ga
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Quote:
Originally Posted by maddss
I switched out the starter relay with another one. And it still does the same exact thing
Any idea on the short, where I should start looking
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Start following the wiring harness. Any critters chewed on any of it?
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[I]1999 Limited w/rear locker, OME Springs Bilstein shocks, black TRD FJ wheels, Ryno skid, satoshi grill, Hilux snorkel, HID retro-fit headlights, Coastal off-road front bumper, Smittybilt 9500 winch, Shrockworks sliders 
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02-24-2021, 01:15 PM
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#5
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Elite Member
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Excellent thought on the starter relay...
Great thought on crewed wire as well.
[1]your starter solenoid plunger solenoid maybe stuck.. Tap that starter with a hammer and see if if that plunger is stuck in the start position.
[2] What happens if you put a key in the ignition and cycle it through? as its sounding like the ignition contacts in the back of the key or the ignition wire from that contact has 12 volt on it.....
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7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread: https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer: https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information: https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html
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02-24-2021, 01:19 PM
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#6
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Does the truck have a remote start, either factory or aftermarket? It can fail in the 'start' mode. My son bought a used Corolla and we discovered on our own that it had an aftermarket remote start that caused several problems. Removing the two 30A fuses for that was all I needed to do to fix it.
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02-24-2021, 01:25 PM
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#7
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Anyone stop to consider this is just the start, Maximum Overdrive..... !!
Any giant meteors passing close to earth???
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02-24-2021, 01:30 PM
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#8
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I’ll check for critters chewing on the wire.
I’ll also check the starter plunger And I’ll have to check the ignition switch
No remote starter.
And I hope the meteors aren’t coming🤣
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02-24-2021, 01:34 PM
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#9
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I had the same symptoms. I replaced the starter relay and also the starter itself with a new denso starter.
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02-24-2021, 01:35 PM
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#10
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Is the ignition in off position. Cycle the key a couple of times after putting in the relay and see what it does. Also check the grounds Bad or dirty grounds do some finicky things.
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02-24-2021, 01:37 PM
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#11
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Quote:
Originally Posted by brillo_76
Excellent thought on the starter relay...
Great thought on crewed wire as well.
[1]your starter solenoid plunger solenoid maybe stuck.. Tap that starter with a hammer and see if if that plunger is stuck in the start position.
[2] What happens if you put a key in the ignition and cycle it through? as its sounding like the ignition contacts in the back of the key or the ignition wire from that contact has 12 volt on it.....
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agree with this one, had a starter stick on me, and and had to smack with a hammer to get it to stop. Replaced starter, fixed issue on this 4r.
However.......
For me it has normally been the opeosite, hit with a hammer to get to work.I did have a cheby, that to get it to start , had to smack starter with hammer, till I replaced that one, and a friend had a 4runner that was the same, had to hit it to get it to work to get out of the woods and back to town.
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2000 SR-5 Highlander version 4:30's, factory locker , green, bought 6/21
2001 SR-5... bought 11/20..sold 6/21....
2000 SR-5 moded, lifted, e locker, other cool stuff, totaled 10/20
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02-24-2021, 01:48 PM
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#12
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Elite Member
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Quote:
Originally Posted by 3bears
agree with this one, had a starter stick on me, and and had to smack with a hammer to get it to stop. Replaced starter, fixed issue on this 4r.
However.......
For me it has normally been the opeosite, hit with a hammer to get to work.I did have a cheby, that to get it to start , had to smack starter with hammer, till I replaced that one, and a friend had a 4runner that was the same, had to hit it to get it to work to get out of the woods and back to town.
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I have used the hammer tap to fix a starter and an alt. Basically they just help in diagnosing the issue. So you pinpoint it down.. 
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7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread: https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer: https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information: https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html
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02-24-2021, 02:11 PM
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#13
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This still sounds more like a wiring issue (alarm or remote start) than a starter issue, since the starter stops when in gear. That hints that the starter relay is getting the 'start' signal, not that the relay or starter has failed.
So, get under the dash and start looking for aftermarket wiring! Rip out and repair what you find.
-Charlie
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02-24-2021, 02:33 PM
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#14
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Quote:
Originally Posted by phattyduck
This still sounds more like a wiring issue (alarm or remote start) than a starter issue, since the starter stops when in gear. That hints that the starter relay is getting the 'start' signal, not that the relay or starter has failed.
So, get under the dash and start looking for aftermarket wiring! Rip out and repair what you find.
-Charlie
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Ah good catch. I missed the part about the starter stopping once in gear.
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02-24-2021, 04:16 PM
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#15
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You said it doesn't have a remote starter.
Have you had the vehicle since new?
Maybe there is one?
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1991 4runner 4wd Auto V6
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