 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Volvo Cars / March 2008'93 240 won't start
My wife went to work n our 240. She came out at the end of the day and it spun but wouldn't start. I went there and tried to start it with the same result. It was raining heavily so we went home. The next day I went to the car and found the battery dead. The battery was SEVEN years old so I wasn't surprised to find it didn't work. Had the car towed to my mechanic. They replaced the battery and then hooked up their diagnostic stuff. It started. They disconnected their diagnostic stuff and put everything back in place and no go. So far they have replaced the crankshaft sensor but now find that the external fuel pump is getting power and ground and doesn't run. Ideas? TIA. Chuck Fiedler Nothing but Volvo since 1974 > My wife went to work n our 240. She came out at the end of the day and > it spun but wouldn't start. I went there and tried to start it with [quoted text clipped - 11 lines] > > Ideas? If the fuel pump is getting power but isn't running, I'd say the problem is obvious. O > > So far they have replaced the crankshaft sensor but now find that the > > external fuel pump is getting power and ground and doesn't run. > > > Ideas? Hmmmm, I'm going to go out on a limb here. Tell them to check the fuel pump. >O > [quoted text clipped - 6 lines] > >Tell them to check the fuel pump. So why would it run with the test equipment connected but not without? > >O > > [quoted text clipped - 10 lines] > So why would it run with the test equipment connected but not > without? Something bad in the wiring harness that the test equipment bridged? Incorrect reassembly after removing the testing equipment? >> >O >> > [quoted text clipped - 13 lines] >Something bad in the wiring harness that the test equipment bridged? >Incorrect reassembly after removing the testing equipment? I just talked to the mechanics. Seems there's an undocumented relay up behind the glovebox that is fried. This might account for my wife having smelled something burning (a point I hadn't mentioned here earlier). They're waiting for the relay to arrive and will see if that fixes the problem. >> My wife went to work n our 240. She came out at the end of the day and >> it spun but wouldn't start. I went there and tried to start it with [quoted text clipped - 14 lines] >If the fuel pump is getting power but isn't running, I'd say the problem is >obvious. So why would it run with the test equipment connected but not without? >>> So far they have replaced the crankshaft sensor but now find that the >>> external fuel pump is getting power and ground and doesn't run. [quoted text clipped - 5 lines] >> > So why would it run with the test equipment connected but not without? Chuck, As suggested by other replies:- Presence or absence of connected diagnostic equipment notwithstanding, if the main fuel pump is getting proper power (ground and +ve) properly delivered to its input terminals when it ought to be getting power, but, is not running, then the main fuel pump has an issue that means it needs to be substituted, even if only temporarily, before any further diagnostics can be carried out. I have to confess to some bafflement as to why with the diagnostic equipment and new battery connected, the pump runs (it's obviously getting a 12v supply), but, with diagnostic stuff removed (pump allegedly still getting a 12v supply when it should), it doesn't run, that makes no sense at all. Clutching at straws mode on Did the garage reinstall your battery as well? Are all the fuses properly seated and the ends clean, perhaps the new battery they tried was managing somehow to get a bit more current to the pump during engine cranking, enabling it to start and run, whereas your battery can't? Clutching at straws mode off Best wishes, Ken Phillips >>>> So far they have replaced the crankshaft sensor but now find that the >>>> external fuel pump is getting power and ground and doesn't run. [quoted text clipped - 32 lines] > >Best wishes, Ken Phillips Ken, your bafflement is shared. See my earlier post regarding the discovery of the shop manual undocumented relay. Methinks we're on the right trail here. I had previously checked all the fuses, especially the #6. I long ago replaced those bloody ceramic units with Buss AGPs, glass fuses with stainless (?) ends. End of the corrosion problems. BTW, I heard those are no longer available. Go see your local auto store. I got some last week. I suspect a Bosch relay is a LOT cheaper than a genuwine Bosch fuel pump. Keep tuned to this station for further developments. Film at 11:00. > I had previously checked all the fuses, especially the #6. I long ago > replaced those bloody ceramic units with Buss AGPs, glass fuses with [quoted text clipped - 6 lines] > > Keep tuned to this station for further developments. Film at 11:00. Relay is about 50 bucks, or free to resolder which is usually all it needs. Fuel pump was around $260 last time I bought one. > As suggested by other replies:- > Presence or absence of connected diagnostic equipment notwithstanding, if [quoted text clipped - 9 lines] > getting a 12v supply when it should), it doesn't run, that makes no sense > at all. I question whether the pump was actually recieving 12V *under load* or if there was simply 12V measured at the wires to the pump with the pump disconnected. Connect a car battery to a multimeter through a 1 megohm resistor and you'll measure 12V, but apply any sort of load to it and the voltage will drop to zero because of the high resistance. >My wife went to work n our 240. She came out at the end of the day and >it spun but wouldn't start. I went there and tried to start it with [quoted text clipped - 6 lines] >hooked up their diagnostic stuff. It started. They disconnected their >diagnostic stuff and put everything back in place and no go. Well now, I just got the car back. Turns out there was a genuwine Volvo relay, #898151 which was fried. That's the one up behind the glovebox. The spark coil had also arced somewhere along the way and needed replaced. Damages? 1. Relay: $64 plus $63 labor; 2. Spark coil: $81 plus $27 to change it; 3. New 75 month battery: $75 4. Tow in: $91; 5. Two days of trying to figure out what the hell was going on: $267. All told, I'm satisfied. I sure could never have figured that out myself. To those who responded to my earlier posts, thanks. Chuck Fiedler Nothing but Volvo since 1974 |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.