95 heater core repl.
Thread Starter
Advanced
Joined: Jun 2011
Posts: 82
Likes: 0
95 heater core repl.
anyone have the diagrams or detailed instructions to replace the heater core in a 95 coupe? im stumped and i wanna have heat for when it gets cold. next month im doing a fluid swap and thermostat change+ tune.
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
Are you certain the core is bad? Leaking inside the cabin?? if its just lack of hot air there are a doz things that cause that in the C4.
Few things are as much fun...
Its as much a PITA as it looks....pull all that stuff off the housing thats under the hood. Remove everything necessary to provide the room to split the case.
Separate the case halves...trade out cores. Good time to clean and reseal the evap housing and ducts. Its not horrible if you can just get started...
A FSM would be very helpful with the step by step process...
I sold a car once rather than do the heater core....
Few things are as much fun...
Its as much a PITA as it looks....pull all that stuff off the housing thats under the hood. Remove everything necessary to provide the room to split the case.
Separate the case halves...trade out cores. Good time to clean and reseal the evap housing and ducts. Its not horrible if you can just get started...
A FSM would be very helpful with the step by step process...
I sold a car once rather than do the heater core....
Last edited by leesvet; Aug 17, 2011 at 11:17 PM.
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
It is....
Once you get started it goes fairly quick. In reality it looks worse than it is just because of how the box is situated under the hood. If it were me designing the thing I would have split the cases horizontally so the top half could come off easily and the evap and heater core simply lifted out instead of this vertical seam thats more cramped and awkward to separate.
Something that I have learned from sore backs and such, is that pulling a front wheel and the wheel well liners sometimes gives you the access to make it go faster and easier...Thats how I do plugs on that side. Tired of bleeding and throwing tools from frustration while working on the passenger side engine bay.....
Once you get started it goes fairly quick. In reality it looks worse than it is just because of how the box is situated under the hood. If it were me designing the thing I would have split the cases horizontally so the top half could come off easily and the evap and heater core simply lifted out instead of this vertical seam thats more cramped and awkward to separate.
Something that I have learned from sore backs and such, is that pulling a front wheel and the wheel well liners sometimes gives you the access to make it go faster and easier...Thats how I do plugs on that side. Tired of bleeding and throwing tools from frustration while working on the passenger side engine bay.....
Last edited by leesvet; Aug 18, 2011 at 02:30 PM.
Instructor
Joined: Jan 2010
Posts: 183
Likes: 0
From: Sayreville NJ
Some bad info going on in this thread. You have to remove the dash pad, the passenger side kick panel, the metal panel under the kick panel, the plastic support bar for the wires, the air bag, unplug all the wiring under the passenger side of the dash, the 5 or 6 small gold bolts that hold the heater core case together, two bolts on one of the round vents connected to the heater case, pull the cover off the case, remove 1 gold screw from heater core strap. Head on outside and remove the 2 bolts that hold the surge tank on, push it out of the way, remove the 2 heater hoses from the firewall, go back inside the car and pull the heater out. Reverse all you did. Heater core can never ever ever come out from the engine bay ( unless you cut your firewall out lol)
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
Some bad info going on in this thread. You have to remove the dash pad, the passenger side kick panel, the metal panel under the kick panel, the plastic support bar for the wires, the air bag, unplug all the wiring under the passenger side of the dash, the 5 or 6 small gold bolts that hold the heater core case together, two bolts on one of the round vents connected to the heater case, pull the cover off the case, remove 1 gold screw from heater core strap. Head on outside and remove the 2 bolts that hold the surge tank on, push it out of the way, remove the 2 heater hoses from the firewall, go back inside the car and pull the heater out. Reverse all you did. Heater core can never ever ever come out from the engine bay ( unless you cut your firewall out lol)
I totally spaced out and failed to take note of the year
and the fact that he has the air bag and has to go thru the inside...more stuff to deal with.I was thinking of earlier C4s (80s into early 90) that were split case outside. Even with that, I'm thinking evaporator and not heater....
I apologize for the misinformation, however, knowing the correct method of removal does'nt make this task any easier...its still a PITA.
Last edited by leesvet; Aug 18, 2011 at 04:09 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Drifting
Joined: Jul 2009
Posts: 1,287
Likes: 18
From: https://www.facebook.com/groups/OrangeCorvettes/
Some bad info going on in this thread. You have to remove the dash pad, the passenger side kick panel, the metal panel under the kick panel, the plastic support bar for the wires, the air bag, unplug all the wiring under the passenger side of the dash, the 5 or 6 small gold bolts that hold the heater core case together, two bolts on one of the round vents connected to the heater case, pull the cover off the case, remove 1 gold screw from heater core strap. Head on outside and remove the 2 bolts that hold the surge tank on, push it out of the way, remove the 2 heater hoses from the firewall, go back inside the car and pull the heater out. Reverse all you did. Heater core can never ever ever come out from the engine bay ( unless you cut your firewall out lol)
Also noteworthy is that the heater core itself has an additional 5.5 at the top holding it in, so don't forget that one. Good writeup Samhain!
Racer
Joined: Feb 2009
Posts: 486
Likes: 3
From: el cajon ca
Melting Slicks
Joined: Oct 2007
Posts: 2,310
Likes: 9
From: KB7TIF Ville NV
