buy a new one
To change the ignition coil on a Volvo 740, first, ensure the engine is off and disconnect the negative battery cable. Remove the ignition coil's electrical connector and unscrew the mounting bolts securing the coil to the engine. Replace the old coil with a new one, reattach the mounting bolts, and reconnect the electrical connector. Finally, reconnect the battery and start the engine to ensure proper operation.
On my 90 740gl it is right next to the ignition coil. It depends on the ignition system used. On a Regina ignition, I think everything is built in the coil (The big square one) The regular round coil is for BOSCH ignition and a separate module is use. NOT SURE, would appreciate confirmation.
To replace the ignition switch on a Volvo 740, first disconnect the battery to ensure safety. Remove the plastic cover around the steering column for access, then detach the ignition switch by unscrewing it and disconnecting the wiring harness. Install the new ignition switch by reversing the removal process, ensuring all connections are secure, and finally, reattach the steering column cover. Reconnect the battery and test the new ignition switch to ensure it functions properly.
In the 1989 Volvo 740 GL with a Bosch system it is located just above the steering column on the dash.
The sender for the rev counter (tachometer) on a Volvo 740 is typically located on the engine's flywheel housing or near the ignition system. It often involves a signal generated from the ignition coil or the distributor. In some models, it may also be associated with the crankshaft position sensor. Always refer to the vehicle's service manual for the exact location based on the engine type.
What are you looking to fix. I am a Volvo tech. 89 Volvo 740 turbo runs rich blows black smoke all plugs are black but are not oily rev it up change plugs. wires. coil. air filter.
On a Regina ignition (to identified check the ignition coil, it's a big square one) if i'ts your case, the sensor is a Air temperature sensor (locate close the air filter)
infolinks.com free pdf diagrams... took me forever to find these... be blessed
Ignition coil, distributor, crank sensor or computer
Haynes Repair Manual for Volvo 760/740 has diagrams of the vacuum sub-systems.e,g. the EGR, the ignition etc
How do you replace a fuel pump for a 1998 Chrysler Sebring Lxi Coupe ?
You need to replace it. There are 2 screws that hold it on.