5.3 will not run!
5.3 will not run! Here's the deal I wired up my motor and tried foreign it up but nothing happens. It cranks over it has fuel and fire. The PCM gas the vats deleted and works on my buddy's car. The engine cranks and acts like it wants to run but nothing. I need help because I am at a loss right now. Has anyone had this problem?
Staging Lane
Joined: Sep 2011
Posts: 50
Likes: 0
Here's the deal I wired up my motor and tried foreign it up but nothing happens. It cranks over it has fuel and fire. The PCM gas the vats deleted and works on my buddy's car. The engine cranks and acts like it wants to run but nothing. I need help because I am at a loss right now. Has anyone had this problem?
Sam
It was Picking up a mil code and a code for the alternator. I did try some starter fluid( I didn't want to) and nothing. It just turns over and sputters. I will try disconnecting the tps and see why happens. Could it have anything to do with the timing?
Gummed up injectors. Happens all the time with engines that have not run in a while.
Take them out and soak them in kerosene for an hour.
Re-install them and it should fire right up.
Take them out and soak them in kerosene for an hour.
Re-install them and it should fire right up.
We had a 5.3 that had sat a couple years and the injectors were stuck - Soaked them a couple hours and it fired right up. I tested them with a 9V battery - They click when functioning correctly.
LK
LK
Trending Topics
Double check that your 'KEY ON' power wires do not lose power when you have the key in the CRANK position.
When you say you have 'FIRE' how did you verify this?
Jon
PSI
When you say you have 'FIRE' how did you verify this?
Jon
PSI
__________________
Your Source for LSX Conversion Parts!
www.psiconversion.com
Ebay Store
Facebook/psiconversion
Instagram/psiconversion
'Dont Let EFI Pass You By!'
Your Source for LSX Conversion Parts!
www.psiconversion.com
Ebay Store
Facebook/psiconversion
Instagram/psiconversion
'Dont Let EFI Pass You By!'
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo i checked the power on wires with a volt meter and everything was reading good. i also checked all plug wires and plugs. i am going to try all of the ideas. i keep my car on base and they are only open on the weekends.
Teching In
Joined: Jun 2011
Posts: 32
Likes: 0
I had a similar problem with my 5.3 lmg turned out my fuel pump had come disconnected. i also had the ignition problem mentioned above from my ignition switch being wired incorrectly and the computer losing power.
hope you find the problem
hope you find the problem
Not sure how you check the trigger signals to the coils with a voltmeter, but you actually disconnected a plug wire, stuck a nail or something down in there and held it next to the block and watched spark jump the gap?
