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I have gone through my b23f 240 to try to solve a no start issue. It turns over, but refuses to start. I've just replaced the wiring harness, checked for fuel (good), spark (arcs), and checked the fuse box. Is there something I missed? <p>I'm thinking of getting an ecu; I see on ebay that there are two types, 0280000503 or 0280000510. Is there a significant difference between the two? I appreciate the help.<p>Solomon from Sacramento, California
 

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Re: Difference in ecus (sojoman)

Welcome to Swedepeed, Solomon.<p>Here are the ECU applications for Volvo 240...<p><A HREF="http://www.swedishautoparts.com/240/volvo-240-fuel-system-and-related-parts.html#ENGINE+CONTROL+UNIT" TARGET="_blank">http://www.swedishautoparts.co...+UNIT</A><p>...and more ecu info...<p><A HREF="http://www.europartshouse.info/VolvoPartsInfo.html" TARGET="_blank">http://www.europartshouse.info/VolvoPartsInfo.html</A><p>Check the car's mass air meter, fresh air box thermo/flap and pre-heat system, all electrical connections, grounds and terminals, all vacuum lines, connections and valves (including under the dash), inspect the fuses for near-invisible corrosion at each contact, confirm that the fuel pump relay has no issues, check ALL cables and wires at each battey post for continuity/fused link, clean the throttle body and flame trap, confirm that all sensors are sending signals to the ecu, et al.<p>If the car continues in the no-start mode and you decide to replace the ecu try to avoid sourcing a used/rebuilt ecu unless the source has an established reputation for providing reliable electrical parts.<p>As with any electrical part - once you open the wrapper it is yours - no returns.<p>Good luck.<p>George Dill<p><A HREF="http://www.matthewsvolvosite.com/forums/viewtopic.php?f=2&t=22168" TARGET="_blank">http://www.matthewsvolvosite.c...22168</A><p><A HREF="http://volvoforums.com/forum/showthread.php?p=175615" TARGET="_blank">http://volvoforums.com/forum/s...75615</A><p>
 
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