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Send PMOak Creek, WI - USA
Joined: 5/21/2008
Posts: 2041
Vette(s): 1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!
Adams' Apple said: Heater cores can indeed seep enough to cause this, and not show up as leakage on the floor, for sure. Ya wanna be sure that's what it is before ripping the dash apart. I agree with bypassing the core to find out, and, as Terry points out, you'll need to run it a while before all of the coolant dries up off of the core, so it's not just a by-pass and check deal...if it is the core, it will still fog up for a while, until the coolant dries up...
This is when having a bore/video scope is very useful. You can snake a borescope up in there, and have a looky-loo, to see if the core is moist/wet.
This is when having a bore/video scope is very useful. You can snake a borescope up in there, and have a looky-loo, to see if the core is moist/wet.
Joel: is that like a broncoscopy?? or a colonoscopy???? lol
Dan
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Duncanville, TX - USA
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
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It's a coreoscopy!!
Joel Adams
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m
Gentlemen...Thank you all for the input on the heater core. I have been out of town for the past few days and just now sat down to go through my email. I WILL begin to trouble shoot the problem using your ideas. Hopefully I can start this week. Please know that I am grateful for the response to this problem. I will keep you posted as we progress . I may have to get clarification on some of the stuff you have suggested. Thanks again.
Larry
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Send PMmacedon, NY - USA
Joined: 7/20/2006
Posts: 367
Vette(s): 68 COUPE 454
HAS MOTION HOOD SCOOP, REVERSED GILLS
ZL-1 FENDER FLARES AND
MOTION REAR SPOILER, LEMAN'S GAS CAP,
BUCKET HEADLIGHTS.
CAN-AM FRONT
RACING SPOILER. CHROME HOOKER HEADERS AND SIDE PIPES! 4 SPEED M20,
LOOKS FAST STANDING STILL !!
Hi Guys,
along this subject, if you do bypass the heater core , will that affect the running temp of the engine?
in other words, will it cause it to overheat ?
Thanks
Joe
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Standard Member
Send PMmacedon, NY - USA
Joined: 7/20/2006
Posts: 367
Vette(s): 68 COUPE 454
HAS MOTION HOOD SCOOP, REVERSED GILLS
ZL-1 FENDER FLARES AND
MOTION REAR SPOILER, LEMAN'S GAS CAP,
BUCKET HEADLIGHTS.
CAN-AM FRONT
RACING SPOILER. CHROME HOOKER HEADERS AND SIDE PIPES! 4 SPEED M20,
LOOKS FAST STANDING STILL !!
Ok just saw a different post that may have answered my question excecpt about the overheating.
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No way will by-passing the heater core cause overheating unless you have some other issues.
If you need to checkout/change your heater core then this information may help:
Brian - NCM Lifetime Member
73 coupe L48, Flat-top pistons, Performer RPM Heads, Crane Cam and roller rockers, Holley 650 vac sec. Performer intake,
3.55 gear BTO 200-4R trans,
Leather seats, Seatbelt Plus 3point seatbelts, Pioneer CD player
Magnaflow Exhuast System
Dewitt radiator and dual electric fans
Borgeson Steering box
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in Forum: C3 HVAC, Fuel, Emissions, and Exhaust
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