need help please
Thread Starter
Cruising
Joined: Nov 2014
Posts: 11
Likes: 0
From: Birmingham Alabama
need help please
1994 LT1 Coupe
after installing a brand new optispark dizzy,harness and ecm,now the heat is not working(which did before).......ideas?
any input would be appreciated
after installing a brand new optispark dizzy,harness and ecm,now the heat is not working(which did before).......ideas?
any input would be appreciated
Drifting
Joined: Mar 2012
Posts: 1,492
Likes: 61
From: New Jersey
Thread Starter
Cruising
Joined: Nov 2014
Posts: 11
Likes: 0
From: Birmingham Alabama
When you say the "heat is not working" do you mean the HVAC system is blowing cold air? If so, check and make sure that you have gotten all air out of the system and that the hoses are attached to the correct locations. If the system is not turning on, check the fuses.
Silver,
Yes....it is only blowing cold air sir.
Thread Starter
Cruising
Joined: Nov 2014
Posts: 11
Likes: 0
From: Birmingham Alabama
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
Are the heater hoses going into the firewall both hot?
There is a restrictor in one of the heater hoses. Sometimes trash builds up there and prevents the coolant from flowing through the heater core.
There is a restrictor in one of the heater hoses. Sometimes trash builds up there and prevents the coolant from flowing through the heater core.
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Melting Slicks
Joined: Aug 2008
Posts: 2,082
Likes: 50
From: Palmdale CA
They should be Hot to a point that you can't leave your hand on them.
If their Warm then there is a restriction in the lines themselves or the heater core.
I would try a simple Heater Core back flush with a garden hose. This as helped many of us in the past.