2002 v70xc 2.4t p0014

Rigosaurusrex · Post by **Rigosaurusrex** » 18 Aug 2021, 03:20

Recently fixed up this car. new head gasket, radiator, timing belt plus bits and bobs.

I have only driven the car 100km (ish) and have been getting the p0014 code after 2 or 3 trips (30-60km). The timing seems spot on. I have checked multiple times with the camshafts lined up horizontal to each other and crank in the right position.

I have researched that poor oil can cause this and the oil was poor before the fix. I cleaned the VVT solenoid fairly well. There is still some old oil in the system so I am tempted to put some seafoam in the current batch of new oil, rinse it and refill with new oil.

The car drives quite well, starts getting a minor shutter at certain revs (around 2.5k depending on speed). I think this is VVT related.

Anyway, my current plan is to drive it a little more with the new oil then do the flush and see if that fixes it. After that, look at parts or possibly give up.

Any help or suggestions would be appreciated. I got a bad deal on this car and I can't throw much more money or time into it, unfortunately.

Thanks

Post by **jonesg** » 18 Aug 2021, 09:25

Put VIDA on it and run the CVVT test , it will show reaction time.
Low oil pressure, thick sludge and clogged feed lines can all contribute if indeed the problem is CVVT reaction lagging.

ignatz · Post by **ignatz** » 18 Aug 2021, 19:53

I had an 01 V70 T5 that my local Volvo shop put a timing belt on. Mine too was throwing the P0014 code and the shop apologized and said it was off one tooth. For me, this goes back to 2011 and I remember driving the car for a day or two before it threw the first code. Then it was stumbling just like you said. Otherwise ran fine.
The guys at my shop said that "some" of the cars timing marks don't necessary line up perfect and you might have to see if you could readjust one cam gear and see if it lines up better.
Even you said that the timing "seems" spot on.
Also my current 01 V70 2.4t threw a code for the cam solenoid and it was a completely different code. That car got a solenoid from the u-Pull it. I think you should take another look at the timing belt.

Rigosaurusrex · Post by **Rigosaurusrex** » 19 Aug 2021, 01:42

Thanks for the help guys. Been pretty flat out working so will take a look on the weekend.

The timing marks are spot on, but I have been timing by making sure the end of the camshafts are in the right position (horizontal and in line with the head unit join marks). I will probably mess around with timing after the VIDA CVVT test. Hope my scanning tool is capable of doing it.

Post by **jonesg** » 19 Aug 2021, 11:33

You probably need VIDA unless you have a good scanner with bi-directional control.

Post by **abscate** » 19 Aug 2021, 20:10

You actually setup a VVT car one tooth off to get the timing right. The procedure is in the thread on ,cam flank angle’

The code is set on the run after the fault is detected, so you have to drive it fir a bit to confirm the code is set

I struggled with this last April 2020, I had setting the tim8ng down to an 8 minute procedure by the time I was done b

Rigosaurusrex · Post by **Rigosaurusrex** » 22 Aug 2021, 00:42

Thanks abscate,

I gave the timing a touch-up today. Instead of taking off the ends and locking the cams as usual I decided to start experimenting with close enough. I just moved the exhaust cam one tooth behind the rest of the engine (or the marks). Took it for a drive and the car felt a lot smoother. Also, it was significantly more efficient than previous drives on the exact same route.

However, it did through a P0016 code on the next start-up instead of the usual P0014. Looks like I might have to keep tinkering. I think it is a timing issue though.

Cheers Jonesg, yeah my tool says NA on the VVT check option.

Post by **abscate** » 22 Aug 2021, 12:30

It’s really tight on a vvt car. One tooth off on either side will give the cam flank error on next startup

Rigosaurusrex · Post by **Rigosaurusrex** » 27 Aug 2021, 03:30

Update.

So I spent the better part of a day tinkering with the timing. I have come to the conclusion that the 'perfect timing' is indeed right. Moving the VVT hub or intake a tooth to the left or right immediately throws (p0016) on next startup, which is a timing error 90% of the time. On perfect timing which was previously set, it throws no code until after 2 or 3 medium length drives until it eventually throws p0014. After resetting the timing (locking cams etc) It's back at the original marks and hasn't thrown a code at me yet (after 2 small drives) but I am expecting the original problem (p0014) anytime.

Could be half a tooth off, especially on the adjustable 3-bolt pully to VVT hub. Or something else entirely.

Also, with the shuttering. It feels like it is getting better every drive. Also, I have noticed that there is no stuttering within the first few minutes of driving, even through hard acceleration. It seems to only occur once the oil has heated up (the coolant reaches temperature well before the shuttering).

Like mentioned in the original post the oil quality was really poor before. I am tempted to run some seafoam through the oil and replace it and the filter.

I guess the final stop would be finding a mechanic with a proper VIDA scan for the CVVT test.

Anyway, always appreciative of any advice. Cheers guys