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Lifter Tapping S70 1999

posted by MMT on Tue Jan 29 13:34 CST 2002
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I recently picked up a used 99 S70 T5. After I drove it for a while I started getting a tapping noise from the engine. When I took it to the dealer for an oil change I had them check it out. The Tech said it was normal for this engine, especially if you do a lot of low RPM & stop and go driving. His solution was; to be sure I was running synthetic oil (I was), then run up the RPM by driving in low gear for a few miles. I have had some success with this method, but the tapping returns in a few days.

Is anyone else having this issue? Can I damage my tranny by driving in low gear appox. 60mph to reach 4,500 rpm for a few miles?

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Lifter Tapping S70 1999

posted by someone claiming to be Ray Niblett on Wed Jan 30 08:47 CST 2002 [RELATED]

Have a look at this. Indicates a ticking noise from
purge canister on some cars and has serial numbers.
Note this is a UK site and may not apply in U.S. since
emission devices can be different country to country:

http://www.volvoclub.org.uk/ticking.htm

Its a long shot, but I cam across it looking for something
else and thought I'd post the link anyway.

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Lifter Tapping S70 1999

posted by bay13 on Tue Jan 29 14:12 CST 2002
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What you are doing will work however thats not in the owners manual, and it's not the way things are suppose to work. You are not getting enough oil to the upper part of the engine, most common cause is several "O" rings in the oil pan not sealing correctly, thus a loss of oil pressure. Make sure it's the lifters making the noise and not the injectors, the injectors do make a tapping noise and that is normal, however if the tapping is coming from under the black spark plug cover and more than likely the drivers side of the engine, then you more than likely need the hand full of "O" rings in the oil pan replaced. All this is a best guess without hearing the noise.
--
Rich K.

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Lifter Tapping S70 1999

posted by MMT on Wed Jan 30 12:39 CST 2002
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Thanx Rich. The Tech said definately lifters. Something about "the cups on the hydrolic lifters not turning freely..."??? Anyway, I'll mention the O-rings to him and see what he says. Should I be concerned about damage to the transmission running in low at 60mph.

Don

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Lifter Tapping S70 1999

posted by bay13 on Wed Jan 30 13:03 CST 2002
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Just watch your temp gauge to make sure you don't over heat, the high RPM is good for the valves, it keeps them rotating and all, but you really shouldn't have to do that, it's not normal. If your Tech is a Dealer Tech, there are about 7 "O" rings that get replaced when dropping the oil pan and some of them are not listed on the VADIS parts list, the local Field Technical Specialist (FTS) should be able to help out with the part numbers for the Tech. If your Tech is an Independent they may not know about all the "O" rings in there, Let me know and I could get you the part numbers. Sometimes an oil pressure test will show low oil pressure and be a big clue, however I have taken oil pressure readings that were fine on a ticking engine and after replacing the "O" ring and letting the oil warmed up the ticking has not returned. This is for the 1999> with the solid lifters.
--
Rich K.

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Lifter Tapping S70 1999

posted by jkordzi on Wed Jan 30 05:06 CST 2002
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last visit: Wed Sep 12 02:43 CST 2001

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Rich, You are not referring to lifter noise when the car is first started on a cold day, are you? I've always understood that not to be an oil pressure issue, but a design problem that Volvo remedied with revised lifters.

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Lifter Tapping S70 1999

posted by DG on Wed Jan 30 10:17 CST 2002
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I've always understood this noise on cold start, on a cold day, to be normal. Even states so in the manual. But, my noise does stop within the time stated in the manual.

DG
--
1998 S70 T5M

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Lifter Tapping S70 1999

posted by bay13 on Wed Jan 30 08:24 CST 2002
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I'm talking about the noise the lifters make when the engine is running, minus a cold start up, although a cold start up noise shouldn't last that long either. If the car is warmed up and they are tacking/clacking at idle then there is a lack of oil problem. I've never heard of a design problem with the new solid lifters, sounds fishy to me.
--
Rich K.

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