There are several things that can cause your 1990 Volvo 740 to stall while driving. The most common cause is a bad fuel pump.
Fuel pump relay or Knock sensor if stall after maybe 2 miles
Fuel pump
yes
Oil in the distributor.
The most common cause of a automobile stalling, while driving, is and electronic fuel pump going bad. The vehicle will begin to stall more and more and eventually not run at all.
There are several things which could be causing the car to stall out while driving. The most common and least difficult problem is that the spark plugs may need to be changed.
There are several reasons an engine may stall while driving, here are three.The fuel tank is empty and the engine is starved of fuel.Not enough power to climb a hill causing a stall.Faulty or damp electronics on a petrol engine can also cause a stall.
No.
Absolutely.
check your coil
When driving the IAC does not do anything because the car is not at an idle