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2004 XC90 Timing Belt - 2.5

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo XC90s. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America).
jholden19
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2004 XC90 Timing Belt - 2.5

Post by jholden19 » Fri Apr 10, 2020 8:45 am

Hello

I replaced the timing belt on my 04 XC90 (2.5L) 5000 miles ago. When I removed the original timing belt, the belt was perfectly aligned on the outside of the cogs with about a 1/4" between the belt and the engine.

When I replaced the belt, I tried to line it up along the edge of the cogs like it was from the factory, but it always slides inward toward the engine once the car was started. After 5K miles, I do notice very slight wear on the top of the belt towards the engine.

Is this something to be concerned about? If so, does anyone have any recommendations on how to keep the belt aligned on the outer part of the cogs?

TIA
Jonathan

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oragex
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Re: 2004 XC90 Timing Belt - 2.5

Post by oragex » Fri Apr 10, 2020 10:20 am

Which brands are the parts ? Water pump also replaced ?

If the belt stays closer to the engine, I think it may rub against the tensioner or the water pump - just look with a flash light. Of course, it's not ideal, but I don't think it will cause it to fail catastrophically. My theory is the culprit is the tensioner - perhaps an issue with the brand of with the adjustment or even too much torque on the bolt (only 15ft-lb). Interestingly, most people who mention the belt running off center have it rather closer to the coolant tank - in which case it's no longer rubbing on anything.

may also try discussing this on the S60 forum because you got the same engine

jholden19
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Re: 2004 XC90 Timing Belt - 2.5

Post by jholden19 » Sat Apr 11, 2020 5:23 am

Thanks for your post. Your comments about the quality make sense. I replaced the water pump, idler pulley, etc and it was a Dayco kit. I followed the manual and tightened the idler pulley to 20 Nm / 15 ft lbs. I'll continue to monitor it and will consider replacing with a premium timing belt kit.

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Re: 2004 XC90 Timing Belt - 2.5

Post by oragex » Sat Apr 11, 2020 11:04 am

I'm afraid I would have to recommend to replace everything again with another brand indeed. For the pump Aisin, for the belt Continental (on sites like Fcperuo.com). The water pump would be the most critical here, but the belt as well


jholden19
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Re: 2004 XC90 Timing Belt - 2.5

Post by jholden19 » Sun May 10, 2020 5:02 pm

I ordered a contitech belt and asin water pump.

While I was waiting for the new parts to come in, the car threw code P0011 and when I check the timing, it is now off by about 10 teeth on the upper cams when the crankshaft is at tdc. The timing was all aligned last time I had the timing belt off.

What is the best procedure to get all of the cams and crankshaft lined back up when I go to install the new belt?

Thanks
Jonathan

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Re: 2004 XC90 Timing Belt - 2.5

Post by oragex » Sun May 10, 2020 5:50 pm

The timing marks don't correspond with the TDC. I would be surprised if the engine would start if the timing marks are off a few teeth because it would bend the valves and loose compression.

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Re: 2004 XC90 Timing Belt - 2.5

Post by jholden19 » Mon May 11, 2020 3:18 pm

Thanks. you are correct, the timing isn't off. I needed to keep rotating the to get the marks to align.

Do you think the P0011 might be caused by the idler pulley? Hopeful that with better components, that code goes away.

Jonathan

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Roger_850T
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Re: 2004 XC90 Timing Belt - 2.5

Post by Roger_850T » Tue May 12, 2020 8:01 pm

The most accurate way to set up the timing belt is to get the tool that locks the back of the camshafts and crankshaft, and ensure the vvt's are rotated correctly and aligned. That said, if you mark the gears before you take it off, and it was correct before, then you can get it back together in the same orientation and be fine. If you have to disassemble the VVT, then you lose the orientation between the gear and the camshaft, so you have to use the long version.
'05 XC90 V8 140k
'95 854T 310k
'02 V70 159k
'03 S80 111k (crashed)
'93 945T 217k (gone to be parted out)
'87 245 300k+ sold, still going
'84 264 Diesel, RIP at 160k
'78 242 manual everything.
'73 P1800ES, fun until the rust set in...

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Roger_850T
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Re: 2004 XC90 Timing Belt - 2.5

Post by Roger_850T » Tue May 12, 2020 8:48 pm

The P0011 is the generic code for ECM-640A, (camshaft intake). It is stored if the position of the camshaft deviates from the requested position in relation to the crankshaft over a certain amount of time. I have seen this when I had issues with my timing belt and the cam was effectively behind by a tooth or two. It gets set when the ECU tries to move the camshaft with the VVT, and the cam position sensor does not give the correct value for the expected position. It can be a bad sensor, or a bad VVT, or if the cam is off by a tooth. (It can be off by one tooth and not have valves hit pistons.) Since you just had the timing belt off, and the problem started after that, it's most likely that something isn't quite right with how it went back together.
'05 XC90 V8 140k
'95 854T 310k
'02 V70 159k
'03 S80 111k (crashed)
'93 945T 217k (gone to be parted out)
'87 245 300k+ sold, still going
'84 264 Diesel, RIP at 160k
'78 242 manual everything.
'73 P1800ES, fun until the rust set in...

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