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2006 v-8 Engine Noise When Cold

A mid-size luxury crossover SUV, the Volvo XC90 made its debut in 2002 at the Detroit Motor Show. Recognized for its safety, practicality, and comfort, the XC90 is a popular vehicle around the world. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America). P2 platform.
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VFLXC90
Posts: 59
Joined: 21 April 2012
Year and Model: XC90 V8 2006
Location: Joliet IL.

2006 v-8 Engine Noise When Cold

Post by VFLXC90 »

The V-8 is making a noise when the engine is cold. The outside temperature plays a part in the pitch of the noise. After the engine warms up, the noise goes away. It sounds like a lifter noise, cam chain tensioner? It's not a rod knock, but resembles that type of noise at idle. If I increase the RPMs the noise doesn't get louder. Seems to be hydraulic related? That's why I'm thinking a lifter or the timing chain tensioner? The engine has always had clean oil. I'm currently running Mobil 1 0-40 with 1 qt. of Lucas oil stabilizer. Does anyone have a suggestion on what it might be. There is 144,000 on the V-8.
08 XC 90 V-8 157,000 Spouse
06 XC 90 V-8 141,000 Daughter
06 XC 90 V-8 234,000 Son
03 V 70 2.5 Non Turbo

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