Volvo RWD 900 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 9/2008 900 INDEX

[<<] [>>]

VIEW

REPLY TO THIS MESSAGE

SAVE

Motor hesitation in acceleration 🚨 900 1998

posted by kittysgreyvolvo on Sun Nov 29 11:16 CST 2020
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS]

[IGNORE ALL POSTS]

last visit: Sat Oct 18 15:23 CST 2014

[RELATED]

Hi Eric the Swiss,

OBD codes are listed on this page. Other resources exist.

See here:
https://www.brickboard.com/FAQ/700-900/EngineOBDCodes.htm

You recorded the LH-Jetronic 2.4 OBD codes. (Not named Bosch Motronic?)

You appear to have a possibly faulty AMM/MAF, oxygen sensor,

1-1-3 - Fuel trim (lambda control) too lean or rich (may also be failed 02 sensor)
1-2-1 - Faulty signal to/from Air Mass Meter
2-2-1 - Fuel trim (lambda control) too lean at part load as you drive
2-2-3 - Signal missing to/from idle air control valve, faulty connection / disconnected.
2-3-1 - Fuel trim (lambda control) too lean or too rich at part load
2-3-2 - Fuel trim (lambda control) too lean or too rich at idle

Ignition control Fault Codes?

https://www.brickboard.com/FAQ/700-900/EngineOBDCodes.htm

You can reset fault codes with your OBD-2 port scan tool. And as you drive what codes return for both fuel injection and ignition.

You can inspect and test the sensor and the idle air control valve (maybe clean if carbonized, and if carbonized, inspect the crankcase ventilation).

Your used replacement AMM / MAF may also be faulty.

How lo9ng have you owned this Volvo 240?

If you have a catalytic convertor, a prolonged period f running rich or running lean will ruin a catalytic convertor.

Also, in the air filter box, is the preheater flap valve to blend preheated air that comes from the exhaust manifold through a solver accordion like hose and into the lower air filter box port. The hose routes under the water pump fan shroud. The air temperature thermostat (Borg Warner Wahler PN 704110) gets stuck to all hot all the time and in summer the AMM may not sirvide it. Replace the thermostat.

You can test your AMM / MAF and oxygen sensor with your electric digital multimeter:
https://www.brickboard.com/FAQ/700-900/EngineSensors.htm

Other article here you can find contain additional procedure to test connected sensors.

A link to your Bosch fuel pressure regulator. Does the FPR appear factory fitted?
https://www.fcpeuro.com/Volvo-parts/240/Fuel-Pressure-Regulator/

Else, I'm unsure what to tell you.

Hope that halps.
--
Beh.

THREADED

THREADED EXPANDED

FLAT

PRINT ALL

MESSAGES IN THIS THREAD

Motor hesitation in acceleration 🚨 [900]
posted by Eric the Swiss on Sat Oct 31 15:41 CST 2020 >

Motor hesitation in acceleration 🚨 [900]
posted by Blindboy subscriber on Sat Oct 31 17:53 CST 2020 > V
- Motor hesitation in acceleration 🚨 [900]
  posted by Eric the Swiss on Sun Nov 1 01:55 CST 2020 > V

Use the On Board Diagnosis (ODB) [900]
posted by Amarin on Sat Oct 31 23:21 CST 2020 > V
- Use the On Board Diagnosis (ODB) [900]
  posted by Eric the Swiss on Sun Nov 1 02:04 CST 2020 > V
  - Use the On Board Diagnosis (ODB) [900]
    posted by Amarin on Sun Nov 1 04:58 CST 2020 > V

Motor hesitation in acceleration 🚨 [900]
posted by machine man subscriber on Sun Nov 1 00:38 CST 2020 > V
- Motor hesitation in acceleration 🚨 [900]
  posted by Eric the Swiss on Sun Nov 1 02:30 CST 2020 > V
  - Motor hesitation in acceleration 🚨 [900]
    posted by spook on Sun Nov 1 07:36 CST 2020 > V
  - Motor hesitation in acceleration 🚨 [900]
    posted by Nahtanha on Fri Nov 27 14:21 CST 2020 > V
- A Man and his Car....Phils 1993 Volvo ??🚨 [900]
  posted by Eric the Swiss on Sun Nov 1 03:45 CST 2020 > V
- A Man and his Car ! for Phil 🚨 [900]
  posted by Eric the Swiss on Sun Nov 1 04:03 CST 2020 > V

Motor hesitation in acceleration 🚨 [900]
posted by Eric the Swiss on Tue Nov 10 08:55 CST 2020 > V
- Motor hesitation in acceleration 🚨 [900]
  posted by Blindboy subscriber on Tue Nov 10 20:04 CST 2020 > V

Motor hesitation in acceleration 🚨 [900]
posted by Eric the Swiss on Tue Nov 10 08:55 CST 2020 > V
- Motor hesitation in acceleration 🚨 [900]
  posted by machine man subscriber on Tue Nov 10 15:35 CST 2020 > V
  - Motor hesitation in acceleration 🚨 [900]
    posted by Eric the Swiss on Tue Nov 10 16:15 CST 2020 > V
    - Motor hesitation in acceleration 🚨 [900]
      posted by machine man subscriber on Tue Nov 10 19:11 CST 2020 > V
      - Motor hesitation in acceleration 🚨 [900]
        posted by Eric the Swiss on Thu Nov 12 14:00 CST 2020 > V
        
        Motor hesitation in acceleration 🚨 [900]
        posted by machine man subscriber on Thu Nov 12 22:48 CST 2020 > V
        
        Motor hesitation in acceleration 🚨 [900]
        posted by j.pelchat on Fri Nov 13 09:07 CST 2020 > V

Motor hesitation in acceleration 🚨 [900]
posted by spook on Thu Nov 12 07:03 CST 2020 > V
- Motor hesitation in acceleration 🚨 [900]
  posted by Eric the Swiss on Thu Nov 12 14:34 CST 2020 > V
  - Motor hesitation in acceleration 🚨 [900]
    posted by Amarin on Fri Nov 13 05:57 CST 2020 > V
  - Motor hesitation in acceleration 🚨 [900]
    posted by Nahtanha on Fri Nov 27 14:27 CST 2020 > V

Motor hesitation in acceleration 🚨 [900]
posted by Eric the Swiss on Wed Nov 18 03:47 CST 2020 > V

Motor hesitation in acceleration 🚨 [900]
posted by Eric the Swiss on Thu Nov 26 14:03 CST 2020 > V
- Motor hesitation in acceleration 🚨 [900]
  posted by machine man subscriber on Fri Nov 27 13:50 CST 2020 > V
- Motor hesitation in acceleration 🚨 [900]
  posted by Amarin on Sat Nov 28 01:06 CST 2020 > V
- Weak acceleration: shot in the dark🚨 [900]
  posted by spook on Sat Nov 28 17:15 CST 2020 > V
- Motor hesitation in acceleration 🚨 [900][1998]
  posted by kittysgreyvolvo subscriber on Sun Nov 29 11:16 CST 2020 > V
  - Motor hesitation in acceleration 🚨 [900][1998]
    posted by Eric the Swiss on Fri Mar 12 15:56 CST 2021 > V

<< < > >>

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.

Volvo RWD/900 Forum Index

Community Forums:

RWD

AWD

GATHERINGS

OPINIONS

PICKNPULL

V8

STORIES

Classifieds

Site Features

RWD Series/Models

AWD Series/Models

Volvo RWD 900 Forum

Motor hesitation in acceleration 🚨 900 1998