Volvo AWD V70-XC70 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 3/2005 V70-XC70 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Injector Test V70-XC70 1998

posted by  KLP on  Thu Sep 30 12:27 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

How do you test if an injector is bad? My wife 98 XC is getting very hard to start and is puffing smoke when it does start up. The problem started out intermittent and has become almost a constant. I have had the engine 'moto-vaced' and have replaced the fuel filter. The problem got marginally better after the vac and filter, but not all the way there and is not getting bad again. The car is acting like it flooded when you try and start it so I am thinking I have a bad injector that is flooding the engine ??.

On a side note, I checked the codes last weekend and came up with a P0116 - Engine Coolant sensor. I will replace the sensor and t-stat this weekend, but I don't think the two things are related since it starting having problems before the CEL came on.

Any help is greatly appreciated.

Kevin







  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Temp sensor rarely rarely goes bad V70-XC70 1998

    posted by  someone claiming to be cn on  Fri Oct 1 03:49 CST 2004 [RELATED]

    I have a 1983 BMW and the temp sesnor for the Motronic by Bosch is still original.

    The problem is most likely in the CONNECTOR. Very often the connection goes bad (road salt in winter, corrosion),....so disconnect the Connector to temp sensor and give it a good clean, spray some WD-40 to both the sensor itself and the connector and reconnect.

    This should solve the problem.

    I change my Thermostat every 60K so if yours is due then do it but do not expect changing the Tsat to solve this problem.

    let us know how it works out.

    cn
    1998 V70
    1983 BMW 735i








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Injector Test V70-XC70 1998

    posted by  someone claiming to be cbe_steve on  Thu Sep 30 20:26 CST 2004 [RELATED]

    hi,
    do the sensor first as the two problems could very well be related and its an easy thing to replace. just beacuse the problems existed before the cel came on does not mean that there was no problem with the sensor prior to that,the light only comes on when certain problems become bad enough but they still can post a dtc code without the cel on.
    plus a faulty ect sensor could make the car run excessively rich causing your problems.

    steve.








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      Injector Test V70-XC70 1998

      posted by  KLP on  Sat Oct 2 13:46 CST 2004
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

      T-stat and sensor have been changed. No CEL anymore and less smoke on start-up, but the car still is not starting well. I still think I might have a bad injector but don't know how to test them. Any one know how?
      Thanks,
      Kevin








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        Injector Test V70-XC70 1998

        posted by  someone claiming to be Rusty on  Wed Oct 6 03:59 CST 2004 [RELATED]

        With the engine running, place the blade of a long screwdriver against the body of the injector, and place your ear on the handle (take care not engage any rotating devices). You should hear a rapid clicking sound. Check each injector in turn. If there is no sound coming from an injector, temporarily switch the wiring with an adjacent injector (this may not be possible on later engines), and retest. If the injector starts clicking, the wiring is at fault (it may be only that the contacts need cleaning). If all injectors click, but one has a somewhat muffled sound, it could be partially clogged, or have a foreign object lodged inside, which can prevent it from closing fully.







<< < > >>



©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.