Volvo RWD 900 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 11/2008 900 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

does a head gasket failure automatically 900

posted by  trichard on  Thu Feb 28 23:49 CST 2008
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 05:52 CST 2014
[RELATED]

non turbo, 4 cylinder 93

would you automatically replace the o2 sensor and cat in a car that has had a head gasket failure? mileage was 85,000 whne it failed with white smoke out the tail pipe.

emissions is coming up soon.

the car idles smooth and runs well since repair. would this imply the sensor and cat are ok?








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    does a head gasket failure automatically 900

    posted by  Steve on  Fri Feb 29 00:51 CST 2008
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 07:16 CST 2014
    [RELATED]

    The O2 sensor, yes, since many brands of antifreeze have silicates in them which poison the sensor. The cat, likely not unless it had been shown to have failed. Replace the gasket and sensor, drive the car, and the cat may clean itself.








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      does a head gasket failure automatically 900

      posted by  trichard on  Sun Mar 2 09:47 CST 2008
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Fri Oct 24 05:52 CST 2014
      [RELATED]

      after getting this car completely warmed up i checked the voltage on the o2 sensor of this regina FI euipped car.

      the voltage fluctuated rapidly between .1 and 1 volt. spending most time in the .4- .8 range

      this seems pretty normal to me, as the bosch systems of which i am more familiar have similar reading when they are running well.

      based on this would you still change it out?







    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      does a head gasket failure automatically 900

      posted by  trichard on  Sun Mar 2 09:40 CST 2008
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Fri Oct 24 05:52 CST 2014
      [RELATED]

      after getting this car completely warmed up i checked the voltage on the o2 sensor of this regina FI euipped car.

      the voltage fluctuated rapidly between .1 and 1 volt. spending most time in the .4- .8 range

      this seems pretty normal to me, as the bosch systems of which i am more familiar have similar reading when they are running well.

      based on this would you still change it out?






<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.