Engine code after cleaning Exhaust VVT Topic is solved

dksoutha · Post by **dksoutha** » 05 Mar 2023, 11:21

Had a stuck exhaust VVT. Cleaned it ultrasonically (did not clean the rubber grommet,) and now parts move freely. After putting it back together I am getting a different engine code, which I forget at the moment but will go out to get that in a minute. Should I have done something specific when cleaning that VVT?

2006 XC70 base

Oly850 · Post by **Oly850** » 05 Mar 2023, 13:09

I don’t think my ‘96 850 had VVT, and they introduced them on the intake side first in later models. In any case, a VVT solenoid is electric and shouldn’t be wet, but the sprocket it acts on is all metal, is this what you cleaned?

dksoutha · Post by **dksoutha** » 08 Mar 2023, 20:15

Yep, just the metal parts, thanks. I left the electronic part out of the cleaning solution, along with the rubber grommet. The engine code (P03**?) has gone away since my last post...hmmmmm. I do have a P0017 code, but that predates the VVT cleaning. I have not cleaned or changed the oil separator box under the intake manifold and suspect that is the source throwing the code. I do welcome any suggestions as to what else could be causing the P0017.

Post by **jonesg** » 10 Mar 2023, 20:07

p0017 is timing related, who did the timing belt ?

Oly850 · Post by **Oly850** » 21 Mar 2023, 21:34

Yeah P0017 is bank 1 (intake/front) camshaft does not swing by it’s hall sensor when the ECU predicts it should. This could be the crankshaft being off +- 1 or 2 teeth or the same for the intake cam. The procedure for the front cam has to be followed precisely. Rather than hose your engine, have a good rest, eat breakfast and remove / replace the timing belt. I usually have to find the timing mark on the crankshaft pulley with my little finger and push toward the block to find the corresponding ridge.

Post by **abscate** » 22 Mar 2023, 04:43

You have to follow the cam timing procedure precisely on VVt cars, it is not just as simple as aligning the marks.