Volvo S70 Made from 1998 to 2000, this sporty model replaced the 850 sedan and instantly became a hit.

99 S70 runs rough at idle and valve noise as well.

Thread Tools
 
Search this Thread
 
  #1  
Old 03-18-2010, 10:53 AM
seanmathes's Avatar
Junior Member
Thread Starter
Join Date: Feb 2010
Posts: 21
Likes: 0
Received 0 Likes on 0 Posts
Default 99 S70 runs rough at idle and valve noise as well.

So I finally got everything back together on this car. Rebuilt head, all new seals, gaskets, timing belt, water pump, etc.

But now there is some tapping/ valve train noise. Also there is a rough idle. The noise seems to go away when I rev above 2500 RPM.

I also had a P0014 code but I fixed a coolant leak reset the codes and now it's no longer throwing the code.

I have about three different heads so I am going to try a different VVT solenoid as I read this could be a possible cause. So questions are:

Is the timing off a tooth on the timing belt? I checked and double checked when I put it together and it looked right but the timing belt cover isn't exactly precise. Is there anyway to tell if it is exactly right?

Is it possible that I didn't install the VVT gear properly.

What else could be going on?

The weird thing was when I first started it up there was a lot of valve noise, tapping etc. But then after it ran for a while it was running really well. Then all of a sudden it started with the erratic idle, hunting, etc.

Please help me I have to get this car done today and really hope I don't have to take the timing belt off.
 
  #2  
Old 03-18-2010, 02:35 PM
spaded09's Avatar
Senior Member
Join Date: Dec 2009
Location: Fort Riley, KS
Posts: 125
Likes: 0
Received 0 Likes on 0 Posts
Default

Sounds like timing is off a bit.
 
  #3  
Old 03-19-2010, 07:15 PM
seanmathes's Avatar
Junior Member
Thread Starter
Join Date: Feb 2010
Posts: 21
Likes: 0
Received 0 Likes on 0 Posts
Default exhaust leak

so I redid the timing belt and it is running great. It was a tooth off and I had the VVT set wrong as well. But now I have an exhaust leak and I can't seem to find it.

Is there a good process to figure out where it is coming from. When I isntalled the new manifold gaskets I didn't put any sealant on them. I did put a small amount just to hold them in place for when I put the head back on.

Any advice is appreciated. Thanks

Also there are no CELs on.

Sean
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
canadavolv0
Volvo 850
15
06-27-2022 06:57 PM
Wayne50@Minnesotalakes
Volvo 240, 740 & 940
21
06-05-2015 06:14 PM
98XCFxRUpR
Volvo 240, 740 & 940
3
09-28-2014 12:16 PM
hansdiva
Volvo 240, 740 & 940
15
12-13-2013 10:06 AM
gmorgan
Engine & Internal
0
06-12-2007 07:53 PM



Quick Reply: 99 S70 runs rough at idle and valve noise as well.



All times are GMT -5. The time now is 04:39 PM.