99 Black/Black/Black C70 Conv, 109K, car is overall in good condition.

Hello all, so the C70 over heated and blew the head gasket :( I have confirmed with compression check, cyl 2, 3, 4 around 40lbs. So I am trying to figure what I want to do. I have a few questions.

I've done head gaskets on ...

VolvoXC70, not sure if your model has the same issue as my 99 C70, but mine had the same thing and it is caused by faulty solder joints on the circuit board of the ABS control unit. There is a temp fix to wedge something near the connector, I'll try and find the link or you can search for it on ...

Does anyone have a wiring diagram for the heated seats. I have checked the voltages at the switch, the front connector of the seat and then also at the back of the seat. the switch and to the seat is good. In the back I get voltage going into the seat but it looks like it should return back to the ...

They must have taken the door panels off because the connectors for the mirrors and the upper speaker were not connected, problem soloved

I think the switch for the all windows button is bad, does anyone know if 99 and 02 use the same door window switches? If so I can test with mine.

Checked all ...

I have a black on black on black 99 C70 with 95k, the wife liked driving to much so we just traded here 01 S80 for 02 C70 (Moondust Metallic, with beige top and interior, really nice car, drives much tighter than mine. Everyone around me probably thinks we are nuts; the 2 of us having the same car ...

Hi, new to the S80 forum, I had a s40 but my wife crashed it and it was totaled :( Good news is we got a great 2001 S80. Anyways, look at the link, I had the same problem with my s40, I am thinking it is probably the CEM, but no idea were it is on the s80.

https://www.matthewsvolvosite.com/forums ...

Along with my heat problem, I also finally fixed my headlight problem. I was unable to source the relays I needed so I went to the junk yard and got a used CEM, $40 bucks and it fixed the issue. So besides some dash lights that I need to replace and a passanger headlight assemlby that needs to be ...

Well, the saga is finally over, the CEL turned itself off after driving about 150 miles. Glad it was just the thermostat, and I have to say it is easiest thermostat change I have done, not that they are hard unless just a PITB.

Yea, that didn't work or I have another code that is popping the CEL immediately

Also look at the CEM, a lot of stuff runs through it and when it goes bad it can cause all kind of problems (both intermittent and persistent)