Volvo RWD Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 2/2017

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

1990 760Turbo Pesky 2-3-2 and 1-1-3 check engine codes

posted by  volvoseeker on  Mon Sep 20 04:15 CST 2010
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Tue Aug 27 19:38 CST 2013
[RELATED]

All: I've been dealing with the appearance of these check engine codes for a while on my 1990 760T that I only drive in the summer. I've put on under 1,000km this year since May. I've also read the prior posts related to issues with these codes - which are many. Current mileage is about 116,000km. Each time I've driven short distances (e.g. under 50km) the check engine light has been coming on. Ive then pulled codes and disconnected battery to clear.

Here is a summary of the codes from this past weekend.

- I ran some errands in the city for about 75km. It started and ran well and the light stayed off. I was down to about 1/3 tank which still had some fuel from storage (94 octane with stabilizer) and refuelled to full with 94 octane. During the last kilometer, at lower revs (not sure if this is an issue or not), the light came on just before arriving home. At idle at home, the exhaust was noticeably a bit dark (rich I presume). I pulled the codes and got 2-3-2 and 1-1-3.

- I reset the codes (no battery disconnect) last night, and drove at highway speeds (110-120km/hour) for abouty 150km this morning. The light stayed off and the car ran well, perhaps slightly rough low idle but no stalling or coughs.

- O2 sensor was replaced at about 114,000km, and I replaced the cold start valve at about 115,000km. at suggestion of knowledgeable Volvo mechanic.

I'm wondering now if this could still be due to a fouled O2 sensor, or possibly something else like the fuel pressure regulator (?). I have not had time yet to check voltages as suggested in a number of other posts. Would driving at highway speeds (higher revs, higher engine temp) have anything to do with the light staying off?

Any ideas on root cause and best path to trouble-shoot and fix are greatly appreciated. Regards.








  •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

    1990 760Turbo Pesky 2-3-2 and 1-1-3 check engine codes

    posted by  Herb Goltz on  Mon Sep 20 05:10 CST 2010
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 13:23 CST 2014
    [RELATED]

    I had these codes with a '92 245 with a nearly new O2 sensor. There was excess voltage on the sensor wire (~1.3V) that shouldn't have been there, perhaps due to bleed-over from the heater circuit. Measure your O2 sensor output with the car running and warm and you should see it swing between 0.15-0.85VDC over a second or two (you will have to watch the meter for a few cycles to see if it is operating over the whole range).

    My car ran terribly when warmed up, and improved immediately if the O2 sensor was disconnected.

    I would also check out your fuel pressure regulator (see if the vacuum line has gas in it or smells strongly of fuel).

    Good luck!







    •   REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

      1990 760Turbo Pesky 2-3-2 and 1-1-3 check engine codes

      posted by  volvoseeker on  Mon Sep 20 07:51 CST 2010
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Tue Aug 27 19:38 CST 2013
      [RELATED]

      Hi Herb: Thanks for your suggestions. What did you do to resolve your excess voltage issue?








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        1990 760Turbo Pesky 2-3-2 and 1-1-3 check engine codes

        posted by  Will740turbo on  Mon Sep 20 12:38 CST 2010
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Wed Oct 22 16:09 CST 2014
        [RELATED]

        If the voltage is indeed bleeding through the insulation, it will need to be replaced.

        It sounds odd that you're getting such low freeway mileage. Have you checked the codes? I think the 2-3-2 is either a rich/lean exhaust reading or a bad signal from the AMM.

        If it's a bad signal from the AMM, that alone would explain your mileage. By the way, I think that oil is supposed to be changed at minimum every 6 months/5000 miles.

        Happy Bricking and Post Back
        --
        1990 740 Turbo, on its way to stock specs, maybe beyond








        •   REPLY TO THIS MESSAGE    PRINT   SAVE 

          1990 760Turbo Pesky 2-3-2 and 1-1-3 check engine codes

          posted by  volvoseeker on  Wed Sep 22 01:32 CST 2010
          Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
          last visit: Tue Aug 27 19:38 CST 2013
          [RELATED]

          I have the car away with work so have not been able to check the O2 voltage yet. Here is a bit more info if it helps the diagnosis though:

          - Last night drove car after it was sitting parked for the day. It started and ran fine for about 10km. After restart, idle was choppy and low (e.g. just over 500RPM), it stalled when I put into reverse and then ran a little rough on restart. About 5km later, I punched the gas going thru a light and check engine light came on. At next stop light it was idling rough and low enough to shudder. Stopped, pulled codes and got 2-3-2 and 1-1-3 again. Reset codes, parked overnight. It started ok this morning and ran fine for about 8km. Now parked for the day.

          Perhaps the solution is to never drive it for short distances! Will be back on the highway tonight for another 150km so will see what it does then. I will check voltage later this week and post result.








          •   REPLY TO THIS MESSAGE    PRINT   SAVE 

            1990 760Turbo Pesky 2-3-2 and 1-1-3 check engine codes

            posted by  volvoseeker on  Thu Sep 23 00:00 CST 2010
            Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
            last visit: Tue Aug 27 19:38 CST 2013
            [RELATED]

            More Info: Drove about 150km last night at highway speeds and car ran really well, no check engine, smooth. Again, during my last 1km at low speed/RPM (on bumpy gravel road - not sure if that is related but interesting given I was on same road when it happened in my earlier post) the check engine light came on again with same two codes. Could vibration be related to the problem too, or coincidence?







<< < > >>



©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.