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colmustard 03-14-2010 10:35 PM

A ? for the moter heads out there
So i have a 1986 chevy k-10 pickup truck with a 305 v8, and it has the stock 4bbl quadrajet. Truck runs fine, except after driving for awhile if i turn the truck off, go into a store real quick and come back, the starter dosent want to crank, but if i let the truck cool off for about another 5 min it will crack just fine. So do you think the the starter is prone to the heat, and i just need to replace or what? Thanks for any input.:D

Gus556 03-14-2010 10:54 PM

I had a 1985 Chevy Blazer with the same problem. Replaced the starter and it was all better.

colmustard 03-14-2010 11:05 PM

thanks, thats good news and an easy fix! Now it just needs to stop raining so i can get underneth of it and replace it! LOL:D I do love working on it though roomy and easy, man i love them old chevys!

mrm14 03-14-2010 11:27 PM

Starter is older and has begun to draw too many amps to turn over and solenoid on top of starter is probably about to go too. This is especially noticable when it is hot. Chevy's usually have a tin heat shield over the solenoid to reflect some of the exhaust manifold heat away. When you buy a new or rebuilt starter these days they usually come with the solenoid. Try to get a High Torque starter when you replace the old starter and replace the heat shield over the new solenoid when you install new starter. If your rig has headders the heat problem is a tad worse.

Also check that your alternator is putting out 14 volts and have your battery "load" checked for cranking load. The battery can put out 12 volts as measured but under load may be providing low amps. Low battery amps can cause your starter to over heat as it is turning over.

hillbilly68 03-15-2010 12:19 AM

Here is what I did to solve the same problem (GM vehicle, 1978):

The problem is heat soak. A heat-soaked solenoid won't complete the circuit between the battery-ignition-starter. An issue especially of you have headers. Cheapest way to fix it is to buy a new solenoid and "remote" mount it on the inside of the fender well. You will have to get a new batter cable and solenoid, but all told you will be well under 50 bucks. DIsconnect the old solenoid (mounted on the starter) and mount/ hook up the new one as per the instructions. No more heat soak.

Hope this helps

colmustard 03-15-2010 03:42 AM

thanks a bunch everyone!:)

cameronguyton 03-15-2010 10:07 AM

You might also have a loose or bad ground connection between the chassis and the block, or the chassis and the battery. I had the same thing on an F-150 and I changed the started and it didn't help until I checked the grounding. Just a heads up.

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