88 454 won't start - Truck Forums

General Motors Tech Chevy tech talk within.

88 454 won't start

Reply

 
 
 
  #1  
Old 04-15-2012, 12:25 PM
Beginner
Thread Starter
Join Date: Apr 2012
Posts: 1
Default 88 454 won't start

I started it and let it run for about 5 min. it started idleing fast and cross fireing. shut the motor down and it back fired out of the exh. the dist.cap has not in good shape. I replaced the coil,cap,rotor, and the module.no spark. the dist. is going around with the the motor.
 
Reply With Quote
  #2  
Old 04-15-2012, 05:46 PM
Diesel Dan's Avatar
Senior Member
Join Date: Mar 2012
Location: Warren, Ohio
Posts: 190
Default

Hello, welcome to the Truck Forums.
Hopefully we can help you.
For starters are there any codes?
There are many things that could cause your no spark symptom.
-bad module(have personally seen multiple new ones bad in the box)
-bad pickup coil
-ECM
-wiring
Do you have a scan tool to help with diagnosis?
Do you have injector pulse?
Have you checked for spark out of the coil before the distributor?
Do you have an actual spark tester?
 
Reply With Quote
  #3  
Old 04-18-2012, 09:04 PM
Senior Member
Join Date: Nov 2010
Posts: 106
Default

Sounds like maybe the pickup coil mounted to the dist. shaft.
It is a old school crank sensor reads compression stroke.
Will not get spark if bad ..will act like vehicle is out of time then quit.
Sometimes will start back when cooled off.
Can check ohm,s on it with a electrical meter.
Set meter to low ohm,s setting . Disconnect yellow and green leads from ign. module.
Take leads touch one to green other to yellow should read 700 to 1200 ohm,s of resistance.
 
Reply With Quote
  #4  
Old 10-23-2012, 04:40 AM
Banned
Join Date: Aug 2012
Posts: 33
Default

i think you should make a diagnostic, and i know a good tool named
DigiProg 3
my friend have one , i think it can help you
 
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Gloveberg
Chevy Silverado/ GMC Sierra Forum
2
12-21-2010 10:35 AM
CAminitruck
Chevy Silverado/ GMC Sierra Forum
2
10-30-2010 05:28 PM
91 GMC K2500
Chevy Silverado/ GMC Sierra Forum
4
03-23-2007 09:06 PM
snap_on_tools
Ford Heavy Duty
2
12-15-2005 11:05 PM
tmoney333
General Motors Tech
1
09-15-2005 01:51 PM


Thread Tools
Search this Thread
Quick Reply: 88 454 won't start


Featured Sponsors
Vendor Directory

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.