Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLVO1991240 L4-2.3L SOHC VIN 88 B230FREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMSPECIFICATIONS
1991 Volvo 240 L4-2.3L SOHC VIN 88 B230F
Ignition System: Specifications
1991 Volvo 240 L4-2.3L SOHC VIN 88 B230FSECTION Specifications
*** UPDATED BY TSB # 28104 DATED AUGUST 1991 [1]
COIL WIRE
Resistance value 2 - 3.5 ohms
CRANKSHAFT POSITION/SPEED SENSOR
Resistance values
# 1389399-5 (old type) [1]
240 ± 25 ohms at 68°F (20°C) 300 ± 25 ohms at 257°F (125°C)
# 1389399-5 (new type with white dot) [1]
170 ± 30 ohms at 68°F (20°C) 212 ± 30 ohms at 257°F (125°C)
# 3547847-8 [1]
170 ± 30 ohms at 68°F (20°C) 212 ± 30 ohms at 257°F (125°C)
DISTRIBUTOR ROTOR
Resistance value 5K ± 1K ohms
IGNITION COIL
Resistance values
Primary (terminals # 1 and # 15) 0.6 - 0.8 ohms
Secondary (terminals # 1 and high tension terminal) 6.9 - 8.5 ohms
SPARK PLUG WIRES
Resistance value 5.6K ± 1K ohms per meter
[1] During February 1991, EZ-116K impulse sensor, # 1389399-5, was superseded by sensor # 3547847-8. The new sensor has different specifications for fault tracing. Late production sensor # 1389399-5 has the same specification as sensor # 3547847-8, and is identified by a white dot on the connector. You must properly identify the sensor to ensure correct comparison of specifications.
COIL WIRE
Resistance value 2 - 3.5 ohms
CRANKSHAFT POSITION/SPEED SENSOR
Resistance values
# 1389399-5 (old type) [1]
240 ± 25 ohms at 68°F (20°C) 300 ± 25 ohms at 257°F (125°C)
# 1389399-5 (new type with white dot) [1]
170 ± 30 ohms at 68°F (20°C) 212 ± 30 ohms at 257°F (125°C)
# 3547847-8 [1]
170 ± 30 ohms at 68°F (20°C) 212 ± 30 ohms at 257°F (125°C)
DISTRIBUTOR ROTOR
Resistance value 5K ± 1K ohms
IGNITION COIL
Resistance values
Primary (terminals # 1 and # 15) 0.6 - 0.8 ohms
Secondary (terminals # 1 and high tension terminal) 6.9 - 8.5 ohms
SPARK PLUG WIRES
Resistance value 5.6K ± 1K ohms per meter
[1] During February 1991, EZ-116K impulse sensor, # 1389399-5, was superseded by sensor # 3547847-8. The new sensor has different specifications for fault tracing. Late production sensor # 1389399-5 has the same specification as sensor # 3547847-8, and is identified by a white dot on the connector. You must properly identify the sensor to ensure correct comparison of specifications.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.