my 1991 740 is hard to start and idles up and down.I changed the distibuter cap and button and plugs and fuel pump and it still runs funny.I can here my pump come on every time I turn the key so the it seems to be working can anyone help me out.

 

Hello fellow Volvo Driver,

the best I can suggest as to what you describe, uhm, is that to first clean the throttle body. second, eithe charge your Volvo's battery or replace it. For you see, I had a similiar ailment, or rather my Volvo did. A hard turn-over and after which a "rough" idle, it would have spurts or jolts as indicated by the RPM readout and an unpleasant feeling as though my Volvo was hiccuping...anyways, a cleaning of the throttle body and later on a charge of the battery cleared it all up. I suggest a new battery, and with that have the alternator charge capacity checked.

If this does not resolve anything just post again or appearantly try a different Volvo forum. For i am no expert but i will send my experience on solo accounts.

 

Yes try cleaning the throttle body and idle motor.