What functions does the Engine Control Module (ECM) perform and how is it installed on 1991 Volvo 740?

The Engine Control Module (ECM) controls the fuel flow by processing information from engine sensors in order to maintain the air/fuel ratio. If the battery is disconnected for more than 5 minutes, it loses the adaptive fuel factors, her reading, require to up to 250 miles are relearning. ECM locations differ according to model with certain removal and installation steps required.

Genuine 1991 Volvo 740 Engine Control Module

Engine Control Computer

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3 Engine Control Modules found

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1991 Volvo 740 Fuel Distributor, Yellow Part Number: 5003707
$600.63 MSRP: $725.88
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Product Specifications
- Other Name: Control Module; Engine Control Module; Computer, ECM, Fuel Distributor
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 5003707
- Warranty: This genuine part is guaranteed by Volvo's factory warranty.
Fits the following 1991 Volvo 740 Submodels:
- Base, GL, GLE, T | 4 Cyl 2.3 L GAS
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1991 Volvo 740 Ignition Module Part Number: 3517369
$619.87 MSRP: $750.44
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Product Specifications
- Other Name: Engine Control Module; Mass Air Flow Sensor; Computer, Control Module, ECM, Ignition Module
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 3517369
- Warranty: This genuine part is guaranteed by Volvo's factory warranty.
Fits the following 1991 Volvo 740 Submodels:
- T | 4 Cyl 2.3 L GAS
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1991 Volvo 740 Control Unit Part Number: 8601597
$800.63 MSRP: $968.02
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Product Specifications
- Other Name: Control Module; Engine Control Module; Control Unit, ECM
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 8601597
- Warranty: This genuine part is guaranteed by Volvo's factory warranty.
Fits the following 1991 Volvo 740 Submodels:
- Base | 4 Cyl 2.3 L GAS

1991 Volvo 740 Engine Control Module Parts and Q&A

Q: What functions does the Engine Control Module (ECM) perform and how is it installed on 1991 Volvo 740?
A: The Engine Control Module (ECM) controls the fuel flow by processing information from engine sensors in order to maintain the air/fuel ratio. If the battery is disconnected for more than 5 minutes, it loses the adaptive fuel factors, her reading, require to up to 250 miles are relearning. ECM locations differ according to model with certain removal and installation steps required.