81 C10 starting issues - Chevrolet Forum - Chevy Enthusiasts Forums

K5 Blazer 1969-1994
While this model ended its run, it is not uncommon to see them on the road or off, years after production end.
Platform: Truck, GMT 400

81 C10 starting issues

Reply

 
 
 
Old November 7th, 2018, 10:49 AM
  #1  
CF Beginner
Thread Starter
 
Join Date: Nov 2018
Posts: 3
Default 81 C10 starting issues

Hey guys I am new here and new to the C10 world. I bought an 81 C10 about a month ago. It has a 350 sbc swapped into it. Motor and trans run great but I have a starting issues. On a fresh start the truck starts with no problem, even driving for an hour or so then parking and starting again there is no issue, but if I drive it around for a longer period of time and go to start it, it wonít even try to crank or anything, it has to cool down for two hours or so it seems and then it will fire right up. It also has a new battery. Any idea what would cause this?
Dkarns90 is offline  
Reply With Quote
Old November 7th, 2018, 8:06 PM
  #2  
CF Pro Member
 
oilcanhenry's Avatar
 
Join Date: Oct 2017
Location: USA
Posts: 830
Default

Originally Posted by Dkarns90 View Post
Hey guys I am new here and new to the C10 world. I bought an 81 C10 about a month ago. It has a 350 sbc swapped into it. Motor and trans run great but I have a starting issues. On a fresh start the truck starts with no problem, even driving for an hour or so then parking and starting again there is no issue, but if I drive it around for a longer period of time and go to start it, it wonít even try to crank or anything, it has to cool down for two hours or so it seems and then it will fire right up. It also has a new battery. Any idea what would cause this?
Likely a bad ICM. It gets too hot and has to cool down to operate again.
oilcanhenry is offline  
Reply With Quote
Old November 7th, 2018, 8:32 PM
  #3  
CF Beginner
Thread Starter
 
Join Date: Nov 2018
Posts: 3
Default

Originally Posted by oilcanhenry View Post
Likely a bad ICM. It gets too hot and has to cool down to operate again.
Iím sorry but what do you mean by ICM?
Dkarns90 is offline  
Reply With Quote
Old November 8th, 2018, 5:20 AM
  #4  
CF Pro Member
 
oilcanhenry's Avatar
 
Join Date: Oct 2017
Location: USA
Posts: 830
Default

Originally Posted by Dkarns90 View Post


Iím sorry but what do you mean by ICM?
Ignition Control Module.
oilcanhenry is offline  
Reply With Quote
Old November 8th, 2018, 9:55 AM
  #5  
CF Beginner
Thread Starter
 
Join Date: Nov 2018
Posts: 3
Default

Originally Posted by oilcanhenry View Post
Ignition Control Module.
Ok itís only a $30 part and easy to change so I give it a shot. Thank you
Dkarns90 is offline  
Reply With Quote
 
 
 


Thread Tools
Search this Thread
Sponsors

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: