Workshop Manuals Factory service & repair Volvo
Volvo 940 L4-2320cc 2.3L SOHC Turbo VIN 86 B230FT (1994)05 · Powertrain Management
05 · Diagnostics

Engine - Idle Speed Dip When Cooling Fan Engages (Engine Control Module)

Make
Volvo
Model
900 Series 940
Engine
L4-2320cc 2.3L SOHC Turbo VIN 86 B230FT
Year
1994
Section
Mar › 95 › Engine - Idle Speed Dip When Cooling Fan Engages
Powertrain ManagementEngine - Idle Speed Dip When Cooling Fan Engages · page 1 of 7
Engine - Idle Speed Dip When Cooling Fan Engages (Engine Control Module) – Volvo 940 L4-2320cc 2.3L SOHC Turbo VIN 86 B230FT (1994)

Technical Service Bulletin # 28916

Date: 950301

Engine - Idle Speed Dip When Cooling Fan Engages

SECTION
2

GROUP
28

NO.
916

DATE
March 1995

RE: 
MFI LH 2.4.4 EPROM exchange for idle speed dip 
when cooling fan engages. 
900
M/Y 1992- B230FT

REFERENCE: TP 3204311, SECTION 2 (23, 28) MULTIPORT FUEL INJECTION (MFI) SYSTEM LH 2.4, 700/900 1989-

MFI LH 2.4.4 EPROM exchange

When the cooling fan engages, the voltage supply to the idle air control (IAC) valve momentarily dips.

If this happens in hot climate with the Air Conditioning engaged, the idle speed might dip, which might cause body vibrations.

EPROM Application Chart

WARRANTY STATEMENT: Claims may be submitted under the New Car Limited Warranty when a manufacturing defect is present using claim type:
01

Operation No.

02383-6

Labor Description

E-PROM exchange

Time Allowance

0.5 hr

Replacement of EPROM

REPLACEMENT OF EPROM

Pinch or Ctrl + scroll to zoom. Double-tap to reset.

The same page in: 940 L4-2320cc 2.3L SOHC Turbo VIN 86 B230FT (1994), 940 L4-2320cc 2.3L SOHC Turbo VIN 86 B230FT (1994), 940 L4-2320cc 2.3L SOHC Turbo VIN 86 B230FT (1994), 940 L4-2320cc 2.3L SOHC Turbo VIN 86 B230FT (1994), 940 L4-2320cc 2.3L SOHC Turbo VIN 86 B230FT (1994), 940 L4-2320cc 2.3L SOHC Turbo VIN 86 B230FT (1994), 940 L4-2320cc 2.3L SOHC Turbo VIN 86 B230FT (1994), 940 L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT (1992), 940 L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT (1992), 940 L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT (1992), 940 L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT (1992), 940 L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT (1992).

Parts & tools for this job For 1994 Volvo 940 / 960 2.3L

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