please help me
Thread Starter
Registered User
Joined: Nov 2013
Posts: 9
Likes: 0
please help me I have a 1994 firebird with an lt1. The engine had bad main bearings so i pulled it and rebuilt it. New crank and bearings new pistons and rings and all new gaskets. Everything was torqued to spec. The car ran fine the first time out. Now it overheats and i cant get it to stop. I did the combustion gas test and it didnt show any gasses showing up in the cooling system. Thought it was a bad thermostate, that is new, so i pulled it out and still overheated. No heat coming from the heater at all either. I have bled and bled and bled the system. Im at a loss. It doesnt look like the coolant is circulating through the engine its just pumping itout. I dont know what to do. No coolant in the oil or oil in the coolant and no steam comming from the exahust. Anyone have any ideas??
These reverse cooling systems are notoriously difficult to bleed. www.shbox.com has the bleeding instructions for proper bleeding. Have you checked the water pump?
TECH Fanatic
Joined: Aug 2008
Posts: 1,740
Likes: 2
From: Nebraska
I always had good luck pulling the thermostat housing and filling the system there. Cap that off and then fill the rest of the way at the radiator. Never had to touch it again and it vertually bled itself.
On The Tree
Joined: Apr 2011
Posts: 128
Likes: 0
From: Ogden, UT
When I was rebuilding mine it kept over heating, the problem wound up being the hoses on the heater core were put on wrong and needed to be switched
Edit: or a heater hose could be going to the wrong place
Edit: or a heater hose could be going to the wrong place
Last edited by Anderson0741; Nov 14, 2013 at 03:39 PM.
This was my method as well, but I used my E waterpump to bleed the system while everything was off.
Trending Topics
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
Thread Starter
Registered User
Joined: Nov 2013
Posts: 9
Likes: 0
Lol yes probably not a good idea to do but ran out of options on what was going on. Thought if i pulled that off and i could see the coolant circulate or run over then i could rule the pump out. I have been fighting this for a week now.