Starter/Ignition Run On - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Huskerboy2 · 03-06-2006, 01:13 PM

Once in awhile, when I go to start my 1 ton, it's like the starter gets stuck. The truck continues to crank and you can't turn it off. Even after I turn the key off, the truck is still trying to turn over. Any ideas? Starter? Ignition? Thanks all.

Longhorn Man · 03-06-2006, 03:33 PM

Probably need to shim the starter.

**dennislbrooks** · 03-06-2006, 03:44 PM

yes agree - one shim should do it

Huskerboy2 · 03-06-2006, 04:09 PM

Thanks for the replies guys. I'm going to sound like an idiot here, but it wouldn't be the first time. Can you elaborate a little more on shimming the starter. Can you buy a starter shim at Autozone, etc.? What does shimming do exactly? Thanks again.

jhow66 · 03-06-2006, 04:40 PM

Did you just change starters?

Huskerboy2 · 03-06-2006, 04:46 PM

No, but I just recently bought the truck. The previous owner had the same problem with it. He told me about it. I figured worse case, it needed a new starter.

jbon64 · 03-06-2006, 05:01 PM

shimming a starter moves the gear away from the flywheel . if there is not enough clearance between the flywheel and the gear on the starter it wont retract after you let off the key. if the problem is still there after shimming , you will most likely need a new starter

jhow66 · 03-06-2006, 05:14 PM

Spring in starter selenoid could be broke also..

71-longbed · 03-08-2006, 05:54 AM

also check the ignition switch ... i had a similar problem and replacing the switch stopped it

bagged74 · 03-08-2006, 09:31 AM

my guess would be the starter solenoid. I bought a brand new starter for my 86 and when i put it on I had this same problem. I had to take the solenoid apart and put it back to gether the right way.

sneakysnake · 03-08-2006, 10:59 AM

There is a big round disk in the back of the soleniod that makes contact between the two terminals(battery-starter)this will stick or weld to the contacts causing the starter to stay engaged. Replace your soleniod should solve your problem.

03-06-2006, 01:13 PM	#1
Huskerboy2 Senior Member Join Date: Feb 2001 Location: Austin, Texas, USA Posts: 1,628	Starter/Ignition Run On Once in awhile, when I go to start my 1 ton, it's like the starter gets stuck. The truck continues to crank and you can't turn it off. Even after I turn the key off, the truck is still trying to turn over. Any ideas? Starter? Ignition? Thanks all. __________________ '72 Chevy Blazer

03-06-2006, 03:33 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Starter/Ignition Run On Probably need to shim the starter.

03-06-2006, 03:44 PM	#3
dennislbrooks Senior Member Join Date: Feb 2004 Location: Williamsburg, Ohio Posts: 1,787	Re: Starter/Ignition Run On yes agree - one shim should do it

03-06-2006, 04:09 PM	#4
Huskerboy2 Senior Member Join Date: Feb 2001 Location: Austin, Texas, USA Posts: 1,628	Re: Starter/Ignition Run On Thanks for the replies guys. I'm going to sound like an idiot here, but it wouldn't be the first time. Can you elaborate a little more on shimming the starter. Can you buy a starter shim at Autozone, etc.? What does shimming do exactly? Thanks again. __________________ '72 Chevy Blazer

03-06-2006, 04:40 PM	#5
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Re: Starter/Ignition Run On Did you just change starters? __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

03-06-2006, 04:46 PM	#6
Huskerboy2 Senior Member Join Date: Feb 2001 Location: Austin, Texas, USA Posts: 1,628	Re: Starter/Ignition Run On No, but I just recently bought the truck. The previous owner had the same problem with it. He told me about it. I figured worse case, it needed a new starter. __________________ '72 Chevy Blazer

03-06-2006, 05:01 PM	#7
jbon64 Registered User Join Date: Jan 2006 Location: sidney , illinois Posts: 312	Re: Starter/Ignition Run On shimming a starter moves the gear away from the flywheel . if there is not enough clearance between the flywheel and the gear on the starter it wont retract after you let off the key. if the problem is still there after shimming , you will most likely need a new starter __________________ hey.....smell my finger 64 nova wagon , 63 nova convertible

03-06-2006, 05:14 PM	#8
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Re: Starter/Ignition Run On Spring in starter selenoid could be broke also.. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

03-08-2006, 05:54 AM	#9
71-longbed Its Magically Delicious Join Date: Jan 2003 Location: oregon Posts: 2,398	Re: Starter/Ignition Run On also check the ignition switch ... i had a similar problem and replacing the switch stopped it __________________ 71 C10 LWB 350sbc -TH350 12 bolt 3.42 Posi Of all my favorite things to do, The utmost is to have a brew. My love grows for my foamy friend, with each thirst-quenching elbow bend. Beer so frosty, smooth, and cold it's paradise pure liquid gold. Yes beer means many things to me that's all for now cus I gotta pee.

03-08-2006, 09:31 AM	#10
bagged74 its just $$$$$ Join Date: Jul 2003 Location: OK Posts: 2,078	Re: Starter/Ignition Run On my guess would be the starter solenoid. I bought a brand new starter for my 86 and when i put it on I had this same problem. I had to take the solenoid apart and put it back to gether the right way.

03-08-2006, 10:59 AM	#11
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	Re: Starter/Ignition Run On There is a big round disk in the back of the soleniod that makes contact between the two terminals(battery-starter)this will stick or weld to the contacts causing the starter to stay engaged. Replace your soleniod should solve your problem. Attached Images



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