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.
buy a new one
infolinks.com free pdf diagrams... took me forever to find these... be blessed
In the 1989 Volvo 740 GL with a Bosch system it is located just above the steering column on the dash.
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.
If the dash lights do not come on when the key switch is turned on in a 1991 Volvo 740, it could be due to several issues. A blown fuse or a faulty ignition switch might be preventing power from reaching the dashboard. Additionally, problems with the wiring or connectors related to the instrument cluster could also be the culprit. It's advisable to check these components systematically to identify and resolve the issue.
not a switch but it does have one if you over boost at about 12-14 psi.
Haynes Repair Manual for Volvo 760/740 has diagrams of the vacuum sub-systems.e,g. the EGR, the ignition etc
In the 1990 Volvo 740 GLE, the ignition relay is typically located in the relay panel under the dashboard on the driver's side. To access it, you may need to remove the cover of the relay panel. The ignition relay is usually one of the larger relays and may be labeled, making it easier to identify. Always refer to the owner's manual for specific diagrams and guidance.
The Volvo's use an ignition switch that feeds power directly to the accessories. Probably wear is causing an intermittent connection. We own 3 Volvo cars right now, and all 3 have had the same issue. For the 740's, it's a pain in the butt to replace. The 850 is a 15 minute job. Pull the black plastic bezel from under the steering wheel, 4 Torx T-15 screws, and switch is right there. Switch is $60-$75 depending where you find it. FCPGroton or IPD are your best bet. Good Luck- PRM
If your 1989 Volvo 740 GL won't crank, first check the battery to ensure it's fully charged and the terminals are clean and tight. Next, inspect the starter motor and its connections, as well as the ignition switch and fuses for any issues. Additionally, consider the neutral safety switch if the vehicle is automatic, as it may prevent the car from cranking if faulty. If these components are in good condition, further diagnostics may be needed to identify the problem.
u need to replace light switch
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