1990 chevy wont start - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Electrical
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 10-15-2011, 04:38 AM
Registered User
 
Join Date: Aug 2011
Location: missouri
Posts: 20
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
1990 chevy wont start

i have a 1990 chevy 1500 4.3 5 speed it wont start it has power to everythnig battery and altinator are good and has a brand new starter. my problem is the starter wont ingage its like theres no power to it i also replaced the neutral saftey switch any other help would be great

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 10-15-2011, 05:34 AM
Registered User
 
Join Date: Aug 2006
Location: Alexandria, VA
Posts: 1,756
Wiki Edits: 0

Thanks: 4
Thanked 65 Times in 63 Posts
Start troubleshooting from the starter.
- Make sure you have the large battery cable tight on the starter lug.
- (then make sure its in neutral) Use a small jumper wire from the large lug over to the small S terminal on the starter. Just hold the wire and touch it between the two points, which will apply 12 volts to the solenoid. If it turns the engine over, the starter is working.
- Now take the wire off the S terminal and put a voltmeter or test light on it. If you don't get 12 volts when you turn the key to start, you have a break somewhere. Look for breaks in the wire where it runs through a metal tube up behind the exhaust manifold and to a point behind the valve cover.
- If no breaks are obvious, then go to the neutral safety switch and pull off the plug. Use spade connectors on both ends of a jumper wire. First plug it into the ignition switch side of the plug and use a test light to make sure that you get 12 volts in start.
- If you do get 12 volts, use the jumper to bypass the neutral safety switch. If that works to turn over the starter, you just need to make some adjustments in the switch. If that does not work, you have a wire break between the neutral safety output wire and the starter solenoid. You can trace and find the break, or just run a new wire.
- If you don't get 12 volts in start at the neutral safety input, you have a bad ignition switch or a wire break between the switch and the neutral safety.

You could also reverse the process and start troubleshooting from the neutral safety switch. However, on a manual trans its probably under the the truck and not much easier to reach than the starter.

Bruce
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-15-2011, 05:17 PM
EOD Guy's Avatar
Registered User
 
Last photo:
Join Date: Aug 2010
Location: Alabama
Posts: 2,040
Wiki Edits: 0

Thanks: 1
Thanked 127 Times in 118 Posts
Good advice above, but I'd start at the NSS 1st.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-16-2011, 09:44 AM
Registered User
 
Join Date: Oct 2011
Location: north carolina
Posts: 13
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
wont start

small wire on started should have 12 volts when key is in start position
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 10-16-2011, 04:11 PM
Registered User
 
Join Date: Aug 2011
Location: missouri
Posts: 20
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
thanks for the advice it was the neutral saftey switch the guy i bought it from had it wired wrong and on the wrong side of the clutch
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 10-17-2011, 04:05 AM
EOD Guy's Avatar
Registered User
 
Last photo:
Join Date: Aug 2010
Location: Alabama
Posts: 2,040
Wiki Edits: 0

Thanks: 1
Thanked 127 Times in 118 Posts
Good to see you got it fixed
Reply With Quote Quick reply to this message

Recent Electrical posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
03 Chevy Silverado SS just wont start allaccesssys Engine 4 08-22-2011 12:02 PM
350 chevy wont start hotrod_11_12 Engine 2 03-27-2011 09:26 PM
'69 Chevy C10 Wont Start TravelingP Electrical 6 11-20-2010 03:33 PM
Chevy Beretta Still Wont Start! 1988ChevyBeretta2.8 Engine 6 03-14-2007 04:30 PM
265 chevy wont start out of time 1939 dan Hotrodding Basics 1 06-02-2004 09:26 PM


All times are GMT -6. The time now is 11:26 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.