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Funny Starting 240.[ALL/1998] posted by Henry T. Mui. on
Sunday, 29 June 1997, at 10:57 p.m.
I have a 240 84' that when I start it the first time in the morning she doesn't want to start. On the second try and sometimes on the thrid try it would start! I've brought the car over to my local repair shop and got new wire spark plugs and dist. cap & rotor put in. The guy said it was the mass meter. but, then he had the same problem with his Volvo and he replaced his mass meter it worked fine but, then the same thing that happened to me happened to him. By the way after the tunn-up the car would start the first time but, after a while the car was back to it's old self again! Any solutions to this problem? Or what is causing it? I heard of a case like mine on a G.M. car it had to do with a faulty sensor. Cannot remember which sensor it was!
Re: Funny Starting 240.[ALL/1998] posted by abe crombie on
Monday, 30 June 1997, at 6:06 p.m.
There was a tech bulletin on that year model 240 w/B23f motor for that exact problem. The bulletin had you install a wire with a 10K ohm resistor in it between the unused small terminal on starter solenoid (inboard side towards block, not the terminal which has the wire from ign. switch already on it) and the wire to LH ECM from the Coolant Temp Sensor (a blue wire found by cutting tape on harness above #4 intake runner). Crimp a blade terminal on wire for starter end, solder the resistor in the wire, cover it with heat shrink, and attach with a SCOTCH-LOK to blue wire at harness. This fix fools the computer during starts into thinking the engine is cooler than it is, thus giving more enrichment. The problem that this fixes only occurs when the temp at start is 55-75 F. This is only to fix a problem on a car with the original ECM and with no other problems (i.e. MAF sensor is OK, Coolant Sensor is OK, etc.). The wire lead w/resistor is no longer available from VOLVO as new ECMs have revised programming in them that does the equivalent during starts.
Re: Funny Starting 240.[ALL/1998] posted by Dave on
Tuesday, 1 July 1997, at 8:32 p.m.
A couple of other possibilities on your problem are:
1) Bad fuel pressure regulator (check ball dirty and/or not seating) allowing the fuel pressure to drop too much when the engine is off. After just stopping the engine, pull the return fuel line off the regulator. If the regulator outlet drips gas (more than one or two initial drops) then that's it.
2) A bad pre-pump in the fuel tank and/or disintegrated pre-pump hose (also in the tank). There are some checks you can do to run the engine without the pre-pump and with only the pre-pump to help isolate this.