Exhausted all ideas, still not cranking

[ShadeTreeNikki]

Timing belt seems to be in perfect condition. Have rechecked everything again today. It just won't start. Great spark. Great fuel pressure. Sounds like it will start, but never does.
Bettery fine
Pressure regulator fine
Plugs and wires fine
Starter fine
Alternator fine
Thermostat fine
Ignition coil fine
Fuel pump/filter both fine
Repaired fuel pump relay.

I'm literally out of ideas.

[trackminer]

I'm willing to bet that this issue is directly related to either the cam position sensor or the crankshaft position sensor...if your vehicle is so equipped...

[misha]

... I pulled the codes.But all of the codes aren't listed on the link. Here are the codes. Hope I'm getting somewhere.
A-1 124. A-2 113,221, 121, 512,311. A-6 411. A-7 111.

Here is the code list:

code list 850 turbo.pdf

(44.99 KiB) Downloaded 213 times

[trackminer]

Though this happened on a 97 850, this may help out...

https://www.matthewsvolvosite.com/forums ... 0&p=202154

[ShadeTreeNikki]

Thanks trackminer. Will replace tomorrow if parts are available. Let you know how it turns out. Thanks again everyone.

[trackminer]

Hello Sir! Has your issue been resolved..?

[ShadeTreeNikki]

Hey, been waiting to respond. Hoping to have an answer for the boards. At this point. Nothing worked. I tried everything. Replaced all that I was advised to replace. Still did not start. It was close to starting several times, but didn't actually start. I ended up having to tow it to an imports mechanic shop. The owner was a Volvo dealership mechanic for 23 years. I'm confident that something will be known today or tomorrow. Will update as soon as I know.

Thanks again for all of the help everyone!

[ShadeTreeNikki]

Cam replaced prior to tow. Tried... it didn't start. Waiting for 2nd call tomorrow.

[taxi]

Maybe lawnmower-syndrome? Or does that "self heal" when the car is left alone for some time?