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S40 TS VVT Phaser

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
Robbo1983
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S40 TS VVT Phaser

Post by Robbo1983 » Mon May 25, 2020 11:22 am

Hi all,

Long time viewer, first time poster :)

Long story short, my timing belt snapped and smashed up all 20! Rebuild complete, engine fires up, and cuts out after about 10-15 seconds. Timing bang on to the tooth, fired twice, no ill-effects, double checked valves fine via borescope.

Computer fires me P0016 & P0017 codes, Crankshaft position correlation bank 1 sensor A & B. These correlate to the ECM-644A (camshaft position, exhaust) and ECM-643A (camshaft position, inlet).

I believe this is due to the VVT phaser. An important note, I did not touch the T55 torx holding the cam timing / VVT set. I lifted the cams out of the engine on rebuild whole and back in to the timing marks, which I assumed would be fine. I marked up the cam tooth to the back of the unit to ensure these were aligned, and they remain so.

I recall my exhaust cam spinning backward, which is why I assume it has VVT, but the cams don't have the dome shape like the VVTs. I have rotated the inlet and exhaust back and forth to attempt to engage the spring load, to no avail.

The engine is a B5254T3 for reference. Which leads me to my three questions. Does it have VVT (assume so as the engine cuts out when timed)? If so, is this on both cams (inlet and exhaust)? Finally, how do you engage the phaser spring back function when you haven't fiddled with the VVT units?

It is my thought that once this is enabled, I can hold one or both cams in the full forward position which will be against the tension of the spring, which should then line up with the timing marks. Once the belts on in that fashion, hopefully happy days!

Any help greatly appreciated.

Chris.

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abscate
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abscate

Re: S40 TS VVT Phaser

Post by abscate » Tue May 26, 2020 8:12 am

Let’s see a picture of your cams with the cover off

I’m reluctant to give model advice across markets as I know these things can vary. The guys with Vida software can check things cross markets, but I can’t
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Robbo1983
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Re: S40 TS VVT Phaser

Post by Robbo1983 » Tue May 26, 2020 11:04 am

Please see attachment without cover.
Attachments
IMAG9063.jpg
Cams

Robbo1983
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Robbo1983

Re: S40 TS VVT Phaser

Post by Robbo1983 » Tue May 26, 2020 11:54 am

Rotor and back view
Attachments
IMAG9085.jpg
Shows rotors from back

Robbo1983
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Re: S40 TS VVT Phaser

Post by Robbo1983 » Tue May 26, 2020 12:24 pm

You can see the rotors were marked in white and correlate to the pulley teeth which are the manufacturers marks. Because I didn't mess with the vvt. These should remain in correlation. However, the computer says no, lol. The only thing I can think is because the spring is not engaging. I can put the belt on without having to hold the cams at their forward position to the marks.

I assume that's why the motor will fire, rough idle and shut down because the ecm detects it as a fault and thus out of range?

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