Question about Volvo S90
Im trying to change the heater core but do not know how to get the dash board off
You are in for a bear of a job. GET THE CODE FOR THE RADIO before you disconnect the battery - there should be a credit-card sized card in the owner's manual with the code, alternatively clever previous owner may have used a sharpie to write it on the radio itself. The dealer can get it by the VIN if it's the original radio.
That said, the dash mostly comes out. The heater core is against the firewall in the center over the transmission tunnel.
You work your way in from both footwells and by removing the radio/AC panel etc.
I'll link the best instructions on the job that I've seen. Volvo 700 900 Heater Core Replacement
Two things - if you're in a relatively warm climate, you can bypass the heater core with a piece of pipe between the hoses under the hood.
Alternatively, you could try pouring a third of a bottle of "Bar's Leak" leakstopper. It's for radiators so don't use the whole bottle, just a bit to stop the leak, add a little more if it still drips into the car.
That's a good fix for another year if you're not planning on keeping the car. Please, PLEASE, disclose that if you do sell the car to someone else so they don't get stuck with an unexpected repair.
Posted on Nov 25, 2014
You will get help in the volvo forums
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Posted on Nov 24, 2014
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Posted on Jan 02, 2017
If the dash is removed you've saved about 9 10ths of the job endurance. Look around, what you believe to be, the perimeter of the heater box. I cannot, and no one else can, tell you exactly where the bolts and nuts that mount the heater box are. Therefore you must viually sixe the box and check outide in the engine compartment and inside under the dash for the mounting bolts.You'll want to start by removing the heater hoses. Then starting at the passenger side engine compartment look for a group of 10mm or 7/16ths nuts retaining the housing and remove them. Do the same inside. The housing is usually held together with screws or clips, it changes year to year. Keep a log or pix of the wires and cables and hoses(vacuum) that are connected to the housing for reassembly. You'll need to "roll" the box out from under the dash depending on how much of the dash has been removed. The core is easy to spot for is has two hoses sticking out, and, is encircled with clips or screws . Also make sure you remove the bracket around the two entry hoses if it has one. Thank you, Dana
Posted on Oct 04, 2009
You can probably avoid removing the dash to replace this get under and start dissasembling to find out for sure you should avoid taking that dash out if at all possible they are a real pain - good luck
Posted on Dec 31, 2008
You'll have to remove the dash in layers. The heater box is the last thing you actually get to. It's not a fun job. It's a very time consuming job. I believe "book" time on that job is around 8 hours. Even guys like me that have done these before take longer that what "book" times is.
Posted on Jun 25, 2008
there are alot of hidden screws holding the dash in. there are some up across the top of the dash by the windshield and defrost vents. also when you open the doors there are some in there. it is quit a difficult job I really dont recomend doing it yourself but if your not afraid to try and feel confident enough to tackle it good luck. it would be best to have an experienced mechanic do the job but it will cost over three hundred for labor. if you do it yourself go to a parts store that sells haynes repair manuals they cost about twelve dollars and are pretty helpfull.
Posted on Oct 31, 2009
Testimonial: "Thanks for the advice, I will find a manual and if gives some form of help I will do it myself. If not I will pay for it to be done. Thanks."
you don't have to remove the dash to do this job
Posted on Mar 07, 2010
Testimonial: "What a relief, now I must find out how to replace it."
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