Need Help! Post LS swap issue
04-28-2018, 02:08 PM
#1
Junior Member
Thread Starter
Join Date: Apr 2018
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1992 Z28
Engine: 5.3
Transmission: 4L60E
Need Help! Post LS swap issue
I've got a 92 Z28 with a 5.3 out of a 04 Silverado and I have an issue that has been driving me nuts.
Issue: Startup vehicle and it will start and run well for a couple of seconds and then shut off, try and restart it and it cranks but won't start. Checked for spark and no spark is present. Read a few threads on other forums which all pointed towards a bad crank position sensor. Replaced sensor and same issue persist. Hooked up my scanner and indeed it is picking up an rpm signal which rules out the crank sensor or its wiring. The vehicle has a brand new Walbro 255 which kicks on when the ignition is turned to on. I'm running out of ideas as to what may be the cause of this issue. Any help would be greatly appreciated.
Issue: Startup vehicle and it will start and run well for a couple of seconds and then shut off, try and restart it and it cranks but won't start. Checked for spark and no spark is present. Read a few threads on other forums which all pointed towards a bad crank position sensor. Replaced sensor and same issue persist. Hooked up my scanner and indeed it is picking up an rpm signal which rules out the crank sensor or its wiring. The vehicle has a brand new Walbro 255 which kicks on when the ignition is turned to on. I'm running out of ideas as to what may be the cause of this issue. Any help would be greatly appreciated.
04-28-2018, 10:55 PM
#2
COTM Editor
iTrader: (22)
Join Date: Mar 2001
Posts: 9,893
Likes: 0
Received 1,855 Likes
on
1,270 Posts
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: Need Help! Post LS swap issue
You didn't make mention of pulling diagnostic codes.
Thread
Thread Starter
Forum
Replies
Last Post
C-Titan
Transmissions and Drivetrain
4
03-23-2015 07:48 PM
Lumarus
Tech / General Engine
8
07-25-2011 08:14 PM
S10Wildside
Transmissions and Drivetrain
20
03-28-2003 07:13 AM