Question about 1991 Volvo 740
I HAVE A 1991 740 VOLVO 4.3 LITER NON TURBO. RAMDOM COLD START ISSUES. i HAVE REPLACED THE COOLENT SENSOR AND THE NOISE RELAY. IT STARTED GREAT FOR 5 DAYS AFTER THE RELAY WAS INSTALLED AND NOW IT WON'T START. SWAPPED THE RELAYS AND NO LUCK.FUEL PRESSURE WAS TESTED AND THE COMPUTER SEEMS TO BE WORKING. eNGINE AND TRAINING ON CAR IS GREAT. I NEED TO GET THIS FIXED.
Try pushing the 4 wires on the radio supression relay into the connector, then try starting it... does it start, run, then die? those connectors ****, i've had the same prob. have you let it huff on some ether? (starting fluid) does it come to life? that would confirm weather or not it its fuel related. my 740 i was loosing voltage to my injectors 10 volts and under, causeing them to inttermittantly not fire, caused by a bad connection at that supression relay.
Posted on Mar 10, 2009
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