[ecbsykes]

Hi,

I've got a 00 V70XC AWD 2.4 LPT with 125,000 miles. I've been getting a CEL (P1332). A mechanic took apart almost all of the timing belt assembly and found no problems.

We looked up the code, and it all points to the Camshaft Reset Valve. I know where this is, and I've taken it off before to look for sludge, but nothing more. I'm nearly certain this is responsible for the CEL coming on and off every once in a while (same code), rough idle when car is started cold, and a minor but noticeable variable vibration that can be felt on the steering wheel.

Before doing anything drastic like replacing it ($$$ and dealer only I think), I'd like to really clean it out. There wasn't any sludge when I looked at it last (we change oil frequently with synthetic). Basically, I want to know a good procedure for cleaning it well. Can I use carb/brake cleaner on the top part (that pulls away)? I'm guessing nothing for the bottom part as that leads back into the oil system.

Any tips or suggestions would be appreciated, thanks!

Modified by ecbsykes at 9:05 PM 4-15-2009

 

[heavyiron]

Re: Camshaft Reset Valve (ecbsykes)

Fire your mechanic! There is no such thing as a "camshaft reset valve"

What I hope you are refering to is the camshaft position sensor. If you know where this is, what were you doing on the wrong side of the engine tearing the t-belt off?

change your camshaft position sensor located on the backside camshaft on the driver side of the car and be done with it

 

[ecbsykes]

Re: Camshaft Reset Valve (heavyiron)

No, not the cam position sensor. Maybe I sort of misnamed it, but I've heard it been called several things. I'm talking about the "camshaft position solenoid" which is also referenced as a "cam reset valve"; the thing that has oil going through it and regulates the Variable Valve Timing.

The picture of it is here: http://forums.swedespeed.com/zerothread?id=111274

And that thread sort of answered a question I had partly. I know the guy I went was not a Volvo specialist as I will be going to when I get back home from college, but he pulled up a seemingly very detailed and specific diagram for this car (some mechanic program to ID cars and parts for repairs/replacement).

 

[heavyiron]

Re: Camshaft Reset Valve (ecbsykes)

Are you having a rough idle? I can't recall when the vvt starts engaging on these cars (maybe someone else can chime in) but are you experiencing a rough idle, or has your timing belt jumped a cog? If it is the cam position solenoid (which actually adjusts the exhaust cam) you should be experiencing a rough throttle experience either at idle or less power at higher throttle positions. If it is your cam position sensor, it often presents itself with a failure to start at all.

P0014 is directly related to the cam positon solenoid / camshaft actuator
While P1332 is more related to the camshaft position sensor.

Modified by heavyiron at 10:07 PM 4-15-2009

Modified by heavyiron at 10:08 PM 4-15-2009

 

[ecbsykes]

Re: Camshaft Reset Valve (heavyiron)

Yep, I have very rough idle on a cold start. My normal idle is about 900 RPM. When it starts cold, it will bounce around from 900 to 1200 until settling at around 1100-1200 and slowly declining down to a steady idle at 900 after about one minute.

The timing belt was checked by the mechanic, they said it was is great condition and the timing was perfect. I haven't noticed a real loss of power, but again there is a weird inconstant vibration.

I guess I should add this too: A while back I got codes P0014 and P1655. To make a long story short, we switched back to 10W-30 synthetic oil after having used 5W-30 for colder weather, and both of those codes disappeared for good. Then we got P1332 which is where I'm at now.

I appreciate the input on this so far, heavyiron. Thanks!

 

[db130]

http://en.allexperts.com/q/Vol...s.htm

i'd start with cleaning the VVT solenoid and if that doesn't work, replace it with a new one since it's MUCH cheaper and much easier to replace than the camshaft position sensor.

 

[ecbsykes]

Re: (db130)

Thanks, I noticed too, that cam position sensor is uber expensive. http://********************/smile/emthdown.gif

I'll do my best to clean out that solenoid really well. I was also told by someone on another forum to try and clean the electrical connections and ensure that they are in fact, connecting.

 

[fredmc]

Re: Camshaft Reset Valve (ecbsykes)

Changing weights of oil from 5/30 to 10/30 wouldn't make a single bit of difference to any engine performance issues that would throw a code.

Anecdotal evidence to say the least.

Now you have a 2000, of which I am not that familiar with, but what about the idle speed unit (I call it an IAC which may not be correct). That controls cold idle at startup. If you have one it's located near the throttle body.

 

[heavyiron]

Re: Camshaft Reset Valve (fredmc)

Quote, originally posted by fredmc »

Now you have a 2000, of which I am not that familiar with, but what about the idle speed unit (I call it an IAC which may not be correct). That controls cold idle at startup. If you have one it's located near the throttle body.

IAC is more of a problem for us folks with '98s. plus, he tripped a code that leads rather directly to the cam solenoid /actuator

 

[Big Will]

When was the last time you replaced your spark plugs and are you using the Genuine Volvo ones?

 

[ecbsykes]

Spark plugs were changed probably around 15-20,000 miles ago. I don't have the exact date with me right now, but I don't think this would cause the code and rough idle. The plugs are either Volvo OEM or Bosch Copper, both of which work just fine. I plan on replacing them soon anyway with Bosch Copper @ 0.028 gap.

When it warms up around here and I have more time, I'm going to try and clean the cam solenoid and ensure connections are good.

 

[vlvo-tech]

Re: (ecbsykes)

if you had your timingbelt done it is posible the actual cvvt hub is not preloaded correctly. it could also be a cvvt solenoid http://********************/smile/emthup.gif