I have a 740 gle 1990 that has just being irritable
Bought the 740 gle one and a half weeks ago ran fine until we took it back to the place we bought it to have some adjustments made a couple of days after buying.
When we got it back it was running terrible, had to take it to another shop to check it ... good shop but not a volvo specialist - but honest. He found a leaking valve cover gasket and that the wires were drenched in oil, changed the plugs, wires and gasket and took it for a drive, it was still running rough, so he checked all the injectors and found that the number one injector was not on properly. Pushed it on and it ran smoothly, he took it for a test drive and he said it ran beautifully. My wife goes to pick it up a couple of hours later and it will not start. The mechanic checks all the fuses all good, checks for spark - no spark, checks the coil with a tach/dwell meter and shows that nothing is getting to the coil. He seems to think it is either the computer or a sensor that feeds the coil ( I can not remember what the name of the sensor is )... He can not do any more.
Any guesses as to what else it may be, it is hard to believe that the ran so well and then nothing.
Any help so appreciated

Nick
90 740 gle
72 1800es