Walbro fuel pumps. Failed right out of the box.
Mar 3, 2004, 08:56 AM
#31
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Originally posted by natedogg
A common upgrade on DSM's is rewiring the fuel pump. The stock wiring drops a lot of voltage. You can even here a loud pump like the walbro tone change up and down with the turn signal. I don't know if there is a similar problem with the EVO's, but it could be why you blew the relay. The pump was trying to draw too much current. You'd think you'd blow a fuse before the relay though...
See DSM wiring upgrade here...
http://www.vfaq.com/mods/pump-relay.html
A common upgrade on DSM's is rewiring the fuel pump. The stock wiring drops a lot of voltage. You can even here a loud pump like the walbro tone change up and down with the turn signal. I don't know if there is a similar problem with the EVO's, but it could be why you blew the relay. The pump was trying to draw too much current. You'd think you'd blow a fuse before the relay though...
See DSM wiring upgrade here...
http://www.vfaq.com/mods/pump-relay.html
Eric
Mar 3, 2004, 09:11 AM
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Originally posted by natedogg
Yeah, I hear ya. Look at it this way though. You can use it as extra theft protection by wiring a hidden switch to disable the relay included in the wiring upgrade.
Yeah, I hear ya. Look at it this way though. You can use it as extra theft protection by wiring a hidden switch to disable the relay included in the wiring upgrade.
Apr 2, 2004, 10:02 AM
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EvoJimbo,
If you have the stock ECU i dont see how a failing fuel pump would blow the engine. You'd either fuel cut if you were boosting, or the engine would just stall out. However, if you have a standalone (esp d jetro versions) it will probably end up running super lean then blow because of the lack of fuel and lack of sensors.
If you have the stock ECU i dont see how a failing fuel pump would blow the engine. You'd either fuel cut if you were boosting, or the engine would just stall out. However, if you have a standalone (esp d jetro versions) it will probably end up running super lean then blow because of the lack of fuel and lack of sensors.
Apr 2, 2004, 10:20 AM
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Originally posted by Coolguy949
EvoJimbo,
If you have the stock ECU i dont see how a failing fuel pump would blow the engine. You'd either fuel cut if you were boosting, or the engine would just stall out. However, if you have a standalone (esp d jetro versions) it will probably end up running super lean then blow because of the lack of fuel and lack of sensors.
EvoJimbo,
If you have the stock ECU i dont see how a failing fuel pump would blow the engine. You'd either fuel cut if you were boosting, or the engine would just stall out. However, if you have a standalone (esp d jetro versions) it will probably end up running super lean then blow because of the lack of fuel and lack of sensors.
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