heater core 85 c4
Le Mans Master
Joined: May 2004
Posts: 5,866
Likes: 60
From: Hellinois
Finalist 2020 C4 of the Year - Modified
There is a blend door that is activated by a rod when you switch from hot to cold, the rod has to be disconnected to do the core exchange, did you hook it back up? Check the vacuum line to be sure it is attached also check the heater valve which is just in front of the heater box under the hood. If you did the work, just backtrack what you did. If you had it done by someone, take it back & make them fix it. One more thing, you could have a massive airlock, did you pack the system? Is the engine running normal temps?
Thread Starter
8th Gear
Joined: Nov 2012
Posts: 8
Likes: 0
From: langley
engin running norm tomorow gonna get back at it 1st time ive done anything on a car.. got a 85 vet and wanned to try and do some work lol. should have started with something else. gonna try and see if its a airlock 1st then go from there
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8th Gear
Joined: Nov 2012
Posts: 8
Likes: 0
From: langley
lol not done yet i guess being a noob at this my cold to heat wont slide now its stuck on hot and it ant really that hot its hot but not as good as it should do i have to move the rod again .....it seems to be stuck in one poshion
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Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Sounds like you've got manual controls? Where did you re-attach the plastic "tee" on the blend door (threaded) rod?
Did you take care to match the control (slide) with the door movement?
That white plastic clip (that looks like a golf tee) should be positioned fairly close to the outer end of the rod.
Did you take care to match the control (slide) with the door movement?
That white plastic clip (that looks like a golf tee) should be positioned fairly close to the outer end of the rod.
Thread Starter
8th Gear
Joined: Nov 2012
Posts: 8
Likes: 0
From: langley
Sounds like you've got manual controls? Where did you re-attach the plastic "tee" on the blend door (threaded) rod?
Did you take care to match the control (slide) with the door movement?
That white plastic clip (that looks like a golf tee) should be positioned fairly close to the outer end of the rod.
Did you take care to match the control (slide) with the door movement?
That white plastic clip (that looks like a golf tee) should be positioned fairly close to the outer end of the rod.
thx that was the problem where the rod was lol im done now everything works