Starter keeps running even with relay removed - Toyota Tundra Forums : Tundra Solutions Forum
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post #1 of 2 (permalink) Old 06-15-2018, 01:18 PM Thread Starter
Join Date: May 2002
Location: Waipahu, HI
Posts: 5
Starter keeps running even with relay removed

So I went to tow a 94 Celica from my sister's house to my house. My sister said it made a god-awful noise when she tried to start it one morning and it remained running even when she took the key out. So when I go to jump it, it instantly starts cranking when I hook up the jumper cables. I pulled the starter relay thinking that would cut the circuit, but it starts cranking even with the relay removed. Does anybody know how this circuit operates? Should I go straight to changing the starter (bad solenoid) or change the ignition switch? Or the relay? I don't want to just throw money at it I'd like to pinpoint the problem if possible... any help out there? Thanks

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post #2 of 2 (permalink) Old 06-15-2018, 02:13 PM
Join Date: Sep 2000
Location: Newcastle, OK
Posts: 2,842
Re: Starter keeps running even with relay removed

It's a classic symptom of a stuck starter solenoid.

You can disconnect the big +12 cable from the solenoid, then connect the jumper cables again. If the key circuit is stuck closed, then you'll hear a big "click" from the solenoid when it engages. It won't start, as the solenoid cannot put current through the starter with the +12 cable disconnected. This will tell you if it's the solenoid (it doesn't "click") or the key circuit (it "clicks").
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