I am trying to unattache the hoses from the firewall side of the car. The manuel says to raise up the car to take the hoses off the heater core. Well, there is a cross member right in the way. I cannot reach the hoses from either the top or the bottom. Is there another way to get them off? Also, I'm trying to locate the SIR connector on each side of the car. The Chilton manuel doesn't give a clear diagram of what they look like so I want make sure I disconnect the right connectors under the dash. The one I am assuming is the connector is the long white plastic section with a blue connector attached on the side.
Heater core replacement on 1998 Pontiac Sunfire
by ljpatee in Aromas, CA on June 05, 2011
1 answer 4 comments
ANSWER by DaveJHM on June 05, 2011
Sorry - no real tricks to share on the heater core. You just have to find a way to get to them - top or bottom. Many repairs don't come with detailed instructions - you have to make your own best method. Not sure what a SIR connector is...?
COMMENT by Visitor on June 05, 2011
It makes sure that the airbag doesn't go off when you're dismanteling the dash. Although, I completely dismantled the dash without disconnecting the SIR connector on the drivers side or on the passenger side. I guess disconnecting the negitive cable on the battery helped that situation, I think anyway! Thanks for your information, I guess I just have to wing it!
COMMENT by DaveJHM on June 05, 2011
Thanks for the clarification; The best thing to do for the air bag is: Disconnect the battery and leave it that way. In 5-10 minutes, you are good to go. So yes, you are right on.
COMMENT by ljpatee on June 10, 2011
Don't recommend this for a novice to do, I spent two days on this project! Also, you do need to disconnect the SIR's because there was more to be taken off of the dash to get down to the heater core, after getting down to the heater core we took a sawsall to the metal hose connectors to get the hoses off of the firewall, after that we lubricated the hoses and they went on with no problem, not conventional, but it worked. It was a challnge, but I sure don't think I want to do this again!
COMMENT by DaveJHM on June 10, 2011
Oh, indeed, I would never suggest this job for the light hearted...
we found out the car was heating and loosing coolant, they diagnosed that it is in the heater core. there also was some coolant smell and we found oil in the windscreen.
Can I get a step by step instruction on removing the heater core? I have the dash,passenger air bag removed.
I'm looking to replace heater core on '01 pontiac sunfire and I'm trying to get an estimate of parts/labor here in Michigan??
my car set for about a month and i had the heater core replaced due to anti. leaking in the passager side floor board so when i got it back that was fixed but now when i drive it i notice it at abo...
The drip looks like it was condensation, but it is now the coolant coming out. I have to top off the fluid every other day. where is this leak coming from? I do not overheat and the temp stays the ...