![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
|
![]() |
#1 |
Registered User
![]() Join Date: Feb 2011
Location: North Texas
Posts: 118
|
Help! Intermittent no start
I will drive my C20 about 30 miles on a 90 degree day, park the truck and try to restart after five to ten minutes. Turn key and have complete silence. New starter, engine wire harness, NOS ignition switch. All these items were replaced before started having issue. Strange thing is it will do this randomly without any warning. If truck sits for about thirty minutes it will start.
Anybody run across this? Was wondering if the neutral start switch could have an intermittent issue. The column and switch seemed unusually hot tonight but might be normal.. Thanks in advance.
__________________
Jeff Horsman 1972 C20 Highlander "C" 1966 Olds 442 L69 four speed 1971 Skylark (GS clone racecar) 494 stroker 1986 Buick T-Type |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,052
|
Re: Help! Intermittent no start
It's easy enough to jump the natural safety if you think that could be a problem. Just 2 spade connectors and tape them up. try that for a couple of days.
__________________
1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD |
![]() |
![]() |
![]() |
#3 | |
Registered User
![]() Join Date: Feb 2011
Location: North Texas
Posts: 118
|
Re: Help! Intermittent no start
Quote:
Thanks!
__________________
Jeff Horsman 1972 C20 Highlander "C" 1966 Olds 442 L69 four speed 1971 Skylark (GS clone racecar) 494 stroker 1986 Buick T-Type |
|
![]() |
![]() |
![]() |
#4 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,628
|
Re: Help! Intermittent no start
Simple!
It's heat soak of your solenoid/starter. Multiple cures for it. Check your grounds and your connections on your battery and your battery cables. install a starter heat shield or wire in a remote solenoid which puts the solenoid up on the fenderwell away from the heat. Everybody has there own cure. I've used the remote solenoid with great success. Here's a link on it. http://www.maliburacing.com/starter_solenoid.html |
![]() |
![]() |
![]() |
#5 | |
Registered User
Join Date: Feb 2013
Location: Upland, Calif
Posts: 698
|
Re: Help! Intermittent no start
Quote:
x2
__________________
1957 CHEVY 1/2 TON SHORT BED 1940 FORD 1/2 TON SHORT BED |
|
![]() |
![]() |
![]() |
#6 | |
Registered User
![]() Join Date: Feb 2011
Location: North Texas
Posts: 118
|
Re: Help! Intermittent no start
Quote:
__________________
Jeff Horsman 1972 C20 Highlander "C" 1966 Olds 442 L69 four speed 1971 Skylark (GS clone racecar) 494 stroker 1986 Buick T-Type |
|
![]() |
![]() |
![]() |
#7 | |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,714
|
Re: Help! Intermittent no start
Quote:
Once you have done that you can test the starter by jumping the solenoid battery cable connection (where the positive cable connects) to the S terminal where the purple wire from the key switch connects. This should engage the solenoid and the starter and rotate the engine. Keep in mind that the engine will rotate and even start for a second so disable the ignition and remove the yellow wire on the outside solenoid terminal and be sure the truck is in park and tires are blocked. If the starter turns the engine over it means that the starter control circuit is the problem. This includes the key switch, neutral switch, and the purple wire. Here is a picture. They are using a red wire to the S terminal and have removed the yellow wire to the outside terminal.
__________________
VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
|
![]() |
![]() |
![]() |
#8 |
Registered User
Join Date: Feb 2008
Location: Tacoma Washington
Posts: 890
|
Re: Help! Intermittent no start
Sounds like a classic hot solenoid issue. Do you have headers?
__________________
I know a guy who's addicted to brake fluid. He says he can stop any time. 72 K10 396 75 Cj5 MPI 350 Chev 67 Chevelle 396, 4 speed 74 FXE 08 Tahoe |
![]() |
![]() |
![]() |
#9 |
Registered User
![]() Join Date: Feb 2011
Location: North Texas
Posts: 118
|
Re: Help! Intermittent no start
Manifolds with OEM heat shield installed.
__________________
Jeff Horsman 1972 C20 Highlander "C" 1966 Olds 442 L69 four speed 1971 Skylark (GS clone racecar) 494 stroker 1986 Buick T-Type |
![]() |
![]() |
![]() |
Bookmarks |
|
|