Full Size K5 (1969-1991) GMT415 (1992-1994) Tech Discuss any and all full size K5 general tech topics here.

Ign. isues, I think, please help 87-K5

  #1  
Old 04-30-2010, 10:47 AM
New Member
Thread Starter
Join Date: Apr 2010
Posts: 5
florida87 is on a distinguished road
Default Ign. isues, I think, please help 87-K5

Greetings, reader/ visiter, now a member.

I have an 87 K5 w/350tbi it's been going through a rebuild now for ofer a year and getting closer to being drivable but, yesterday I took it down the road (about 1/2 mi.) mianly to try and unstick the frnt brakes from sitting so long. other than reaching 180* at my garage this is the hotest it has been. anyway I shut it down only to find it wouldn't start after about an hour, the batt even seemed unusually low. I charged it up and it just cranks - no starting and no fuel pump sounds. I checked fuses ect and can find nothing. any ideas? btw the oil pressure guage was fluctuating on the ride if the sender go's out on this truck will the ecm shut down the pump and spark? Thanks, David
 
  #2  
Old 04-30-2010, 04:16 PM
New Member
Thread Starter
Join Date: Apr 2010
Posts: 5
florida87 is on a distinguished road
Default

edit; It's not ign. its for sure fuel...none spraying and no sound.
 
  #3  
Old 04-30-2010, 11:13 PM
Beginning Member
Join Date: Apr 2010
Location: Centerville, TX
Posts: 12
a57chevy43 is on a distinguished road
Default

This may not be your entire problem but is the distibutor loose. It may turned on its own and thats why it wont turn over good. You may have also lost a connection at the starter where the vehicle acc. including ecm gets its power from. That would explain not turning over good and no fuel. If its turning over good then maybe pour a lttle fuel down the TB and see if it will fire off. If so then Ecm may be ok and it could just be fuel pump
 
  #4  
Old 05-01-2010, 07:03 AM
New Member
Thread Starter
Join Date: Apr 2010
Posts: 5
florida87 is on a distinguished road
Default

Thanks, can you tell me where is the fuel relay? and or where is a place for me to test power to the pump as there is no fuse I really want to be sure before I drop the tank if you know what I mean. Thanks, David
 
  #5  
Old 05-01-2010, 07:28 AM
swartlkk's Avatar
Administrator
Join Date: May 2005
Location: Waterloo, NY
Posts: 40,803
swartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond repute
Default

The relay is on the firewall. There should also be a fuel pump prime connector somewhere near the relay if I remember correctly. The prime connector, when connected to a +12V source, will directly power the fuel pump.
 
  #6  
Old 05-02-2010, 01:31 PM
New Member
Thread Starter
Join Date: Apr 2010
Posts: 5
florida87 is on a distinguished road
Default

Thanks, found it, it is the pump and will order one Monday.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
1991chevy
1st Gen S-series (1983-1994) Tech
4
10-11-2012 12:53 AM
bretta
2nd Gen S-series (1995-2005) Tech
2
02-17-2009 04:26 AM
butters
Engine & Transmission
5
02-07-2009 10:59 AM
The Slacker
1st Gen S-series (1983-1994) Tech
1
05-26-2008 07:00 PM


Thread Tools
Search this Thread
Quick Reply: Ign. isues, I think, please help 87-K5


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

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.