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Discussion Starter · #1 ·
:(
My 1998 S70T5 has a failed piston rod bearing due to low oil.
I haven't figured out why I lost oil, but it happened.
Last week Friday, I noticed a slight "ticking" when I started the car up in the parking lot of my work. The ticking of the lifters was rarely accompanied by slightly deeper sounding ticking. Checked oil, it was low. Added 2 quarts. :eek::facepalm:
Didn't drive it all last weekend, got an oil change ASAP at trusted mechanic, and my mechanic said I had a blown head gasket but I could still drive the car as long as the oil was full.
Started up the car, was disappointed the sound was still there from the lifters, but I planned on replacing them once I was told the head gasket was shot.
Car drove fine with the ticking for two days, I wasn't hitting it at all though for obvious reasons, but otherwise I was getting full power and averaging 24mpg before the ticking started.
Until I drove it home the 2nd day after the oil change, when I was on my way home from work, the deeper ticking wasn't just once in a while, but constant. So I pulled over as soon as it was safe and got the car towed the next morning(I work late).
So, now I have no working vehicle and will probably buy a $700 beater off craigslist.
My mechanic doesn't do engine rebuilds. I haven't contacted any junk yards yet about any used engines. Not sure a used engine is my best option. Being outside of Chicago, I'm sure there could be some around.
I've had this car since '04 and ~73k miles. It has 134,3xx now. Never had any engine over heating, ever. Head gasket, IDK. No milky oil. No mix in reservoir, but that's only visual from me popping the hood and opening the caps. Car never blew smoke from what I could tell. However, someone did say they saw a puff of blue smoke when I punched it one time on the way to work(they were following).
I don't mind having it repaired as I love my S70. I'd just need a cheap daily driver and a machine shop that can do a Volvo engine.
Anyone been down this road?
How hard is it to get replacement internals?
Is the block compromised? I mean, you don't know until you tear the engine down right?
I'm really sad I let this happen to my Volvo. I want to keep this one! She's has been a great runner for me. The only problems are: the engine obviously, the steering rack leaks and brake pads need replacing. I can and have been driving it with the rack leak and loss of stopping power. I just work so much and 2nd shift hours I don't have the time to get it taken care of. Now my hand is forced and I must deal with it. I love my Volvo! Any sage advice? Thanks. :beer:
 

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Did the oil pressure light ever flicker on you? The most common failure in this regard is the two orings in the oil pan that govern the oil pressure to the upper engine. How do you know you have failed bearings? Particles in the oil? I'd consider dropping the pan, replacing the orings & seeing if the tick goes away.
 

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Discussion Starter · #4 ·
From what my ear can tell, I have fairly good hearing, its the top of the engine ticking.

I assume the lifters are hydraulic and the low oil caused that.

The deeper tick that I heard intermittently at first and became more constant & apparent on the last drive, is the rod bearing failing.
I also had the car towed to my mechanic who said the deeper noise is the piston rod.
 

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Discussion Starter · #5 ·
And yes, the oil light on the dash did flicker during the problem on the last drive. The only time it ever came on during the last few weeks. Before it would come on while in a high speed turn. shhhh.
 

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Where are you located in the Chicago area? I know of a couple of shops in the area of the Northwest suburbs, independents both, that do excellent work. I'm located in Hoffman Estates. Swedish Car Specialists in Schaumburg do excellent work and rebuilt an engine for me after I had a timing belt failure and did not have time to repair it myself. Lester and Randy have been my go to indies for over a decade for any work I don't have time to do myself and they do excellent work.

I'll have to track down the name of the other shop that was recommended to me by a friend who uses them all the time. I know another guy in Aurora who is a Volvo tech and he does a ton of independent work. He parts out cars all the time and could very well have an engine if you're looking for a used one.

I would suggest posting up in the Volvospeed Midwest Crew's forum and ask the same questions there. We have about a dozen guys who live in the Indiana, Illinois, Wisconsin corridor (all within 2 hours of Chicago proper) and they could point you to an engine or other resources. There are a number of junkyards in the area, it's just a question of tracking down an engine if you don't want to rebuild, and Volvos of the vintage you're looking for while not overwhelming, are reasonably plentiful.

Here's the MWC forum chat thread you'd want to post in.
 

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The same mechanic that won't tear down an engine diagnosed a rod bearing failure without any disassembly?

Take it to someone who knows Volvos & will replace the oil pan orings. If it makes you feel any better, they could always drop a rod cap while the pan is off to check for wear. The lifters tap will go away when the oil pressure issue is resolved. The only question is whether you really have done any serious damage from driving with low oil pressure. It's STILL far cheaper to have the orings done 1st & see how it goes than to do a motor swap....
 

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Discussion Starter · #8 ·
Yeah, he's a good mechanic. He doesn't turn a wrench full time anymore. He run's the business. That's good and bad. He has one good wrencher and another decent one and oil change guys that change every few months.
I assume he doesn't want to do a tear down because of the time and unknown issues. I'm sure he's doing his best guess.
I will call and ask him about the oil pan/pressure governing o-rings.
 
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