Dmarks - Pete's advice is pretty solid. I will expand a bit. At your miles it would not hurt to tackle the oil pan and the corresponding o-rings. FCP kit is solid, but you can skip their sealant. Just source some Permatex Anaerobic Gasket maker and a foam roller/tray from the dollar store - that is ...

I have used it with no problem. It states it meets the specs on the bottle.

It is really hard to tell how bad a sludge issue on a Volvo is b/c the cam cover is the valve cover - so there is no great way to see how the valve train looks. Removing the cam cover is major surgery. Usually from pass side to driver side, valves 1-3 are fairly clean and then they start to get dirt...

My sister on my old 2002 XC70 had the accelerator position sensor issue, against my advice she changed the pedal assembly with no change. She used VIDA and followed the fault trace process and ended up with a relay as a potential cause. She swapped the relay from her donor XC90 (part number match) a...

I am not very proficient in VIDA, but the software is very powerful and will provide the answers.- at least a fault trace path to go through. There are numerous videos on the internet - pick one that goes through the steps, it doesn't have to be for your problem, but it will show you how it works an...

Try disconnecting the MAF and see if it will run.

Good call on timing belt issues RickHaleParker. Chipmunkpizza check the timing before you try anything else - your compression numbers show you don't have valve damage which is great. If you keep trying to run it and the belt is in fact jumping further attempts could cause further movement and damag...

I don't have VIDA anymore so I cannot provide guidance on which relay you are looking for. Was it in the rear of the car or the front? There is suppose to be a relay there - so you may still need further testing. Maybe RickHaleParker will chime in and point you to the correct relay and its location....

I would only add that before buying any kit you have to check your current pump to make sure the actual windings are not bad. You can replace all the parts included in the kit, but if the windings are bad the pump will not work. A simple VOM check is all that is needed of the windings. Low ohms - no...

Start by making sure your battery is fully charged. Then you need to focus on this code:

CEM-6 C48 Transponder Type. Signal Faulty

see here: https://www.dtcdecode.com/Volvo/CEM-6C48