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.
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
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
u need to replace light switch
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.
#1346030
Yes. The 740 and 940 are very similar and share many common parts.
no spark