|
850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
Information |
|
Knocking!!!Views : 656 Replies : 6Users Viewing This Thread : |
|
Thread Tools | Display Modes |
Jul 7th, 2009, 12:05 | #1 |
rooksy
|
Knocking!!!
Hi all,
Here's an interesting one!!! I took my son to school yesterday, it was raining, and the roads where wet(obiviously) with a few puddles(not very deep). I went through a puddle and then it sounded like the exhaust was blowing and knocking from under the car, felt like it was coming from the transmission tunnel with poor running and no power? Any idea's, it lasted for about 15mins and then it was okay! seriously confused! rooksy V70R awd |
Jul 7th, 2009, 16:36 | #2 |
Trader
Last Online: Nov 19th, 2021 13:18
Join Date: Jul 2007
Location: Southport/Merseyside
|
Could be anything!
Sounds like it's cleared itself, the only way to find it is to let it develop then a mechanic can diagnose the fault
|
The Following User Says Thank You to southportvolvo For This Useful Post: |
Jul 7th, 2009, 23:50 | #3 |
rooksy
|
Hi,
Guess what! happened again today about 3 times. Each time the car went through a shallow puddle, the knocking developed, poor running and sounded like a tank, each time within about 5 minutes it cleared itself. I even tried stopping and having a look, but couldn't see any water on the electrical stuff, got absolutley soaked, much to my son's amusement! Rooksy |
Jul 8th, 2009, 09:42 | #4 |
Phoenix from the ashes
Last Online: Apr 3rd, 2024 01:16
Join Date: Jan 2006
Location: Finchingfield
|
Could be water upsetting the lambda sensor..
No sign of a dash light i assume?.. Jod
__________________
Dum Spiro Spero VOC 20419 |
Jul 8th, 2009, 10:37 | #5 |
rooksy
|
Hi Jod,
no dash lights, I know that the lamba sensor is just under the turbo (I think), could it have a dodgy wire, so when the water splashes up and it shorts out until the heat from the exhaust dries it out. Is this possible or not! I 've never come across thsi before. Cheers rooksy |
Jul 8th, 2009, 10:48 | #6 | |
Phoenix from the ashes
Last Online: Apr 3rd, 2024 01:16
Join Date: Jan 2006
Location: Finchingfield
|
Quote:
You will need to jack the car up and check the two sensors, one before the cat and one in it.... Cheers Jod
__________________
Dum Spiro Spero VOC 20419 |
|
Jul 8th, 2009, 20:00 | #7 |
rooksy
|
Hi Jod,
Thanks for the info, as soon as I get Around to checking them, I'll let you know the outcome. cheers again. rooksy |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Display Modes | |
|
|