Hello all! I've got a 1992 Volvo 240 Automatic with 200,000 + miles that we bought a couple of months ago. The car easily passed emissions test at time of purchase.

Now the car runs pretty good for about an hour or so and then stalls out. If we let it cool off overnight it will run again the next day.

Today it started throwing engine code 113 (Fuel trim (lambda control) too lean or rich)

Shortly after we bought the car the engine light came on and it has given us the engine code 241 (EGR system flow too low). Perhaps due to a gummed up EGR or bad EGR Valve but this wouldn't cause the vehicle to quit running after awhile would it???

It used to only run for about 20 minutes so we replaced both fuel pumps, plugs, wires, Distributor cap and rotor, and fuel filter and that appeared to fix the problem but now it is dying again after what seems to be longer periods of time.

I'm thinking maybe the O2 sensor needs to be replaced.

Thoughts?

Many thanks!

 

You did not mention the white fuel pump relay above the passengers feet where solder joints crack and prevent current flow when hot - cracked solder joint=poor connection=heat=worse connection=no current flow until it cools down - what's the date on it? or the 25A blade style fuse under the hood near the battery that powers the fuel injection system. It's exposed to the elements (I know bad design) Does the fuse box have all good connections? They tend to get corroded on the ends -

The o2 sensor is not what is making the car stop running - The o2 simply fine tunes the mixture, it can't change it enough to make the engine stall. If you want to test that theory - the car will run fine with it disconnected ( but will set a code)

A stuck open EGR valve will make the engine idle poorly or stall when idling, but should restart with additional throttle applied. Plus you have a flow too low - that's determined by the temp sensor on the EGR pipe under the manifold - no flow, pipe stays cold, code gets set. Probably the pipe is clogged or partially clogged. (don't spend any money on it.)

 

if you live in california, you have to fix the EGR to pass smog. usual repair is to remove the intake manifold, remove the EGR valve, and ream out the EGR pipe that goes from the valve around behind the engine to the exhaust manifold, the egr valve itself rarely fails. but, a clogged EGR will have zero effect on starting, running.