79 Volvo 242 Starts ... Then Dies
Posted 08 January 2010 - 01:50 AM
Posted 08 January 2010 - 06:30 AM
►Try starting with fuses #5 & #7 jumpered together. If it starts and runs, odds are the fuel pump relay is faulty.
►Make sure you can hear the frequency valve buzzing during cranking/running, otherwise there may be a failure in the lambda-sond system, some cars (though not all) so equipped will not start/run if this is not operational.
►Check the idle control valve hoses, make sure they are not loose or split. Look for any other obvious air intake leaks, make sure the PVC system is hooked up correctly. Make sure the boot between the throttle body and the air flow sensor is in good order. Any backfire through the intake while cranking/running indicates an significant intake leak.
►If not already done so, test the fuel flow as I described in your other thread: http://volvospeed.co...-242-fuel-rail/
You could also unbolt the injector holders and pull them out, place the injectors in bottle(s) to verify fuel flow.
►Try starting while spraying carb cleaner into a vacuum port, should be able to run on that even with no fuel.
►Verify timing belt marks line up.
►Attach an K-Jet fuel pressure test gauge and verify your line and control pressures are within spec.
Additional resources for diagnostic operations can be found at http://www.k-jet.org/
Posted 08 January 2010 - 07:05 AM
Posted 08 January 2010 - 07:57 AM
Posted 08 January 2010 - 05:40 PM
Maybe heat up the end of a screwdriver and force it into the remainder then back it out.