Walbro fuel pumps. Failed right out of the box.

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Mar 3, 2004 | 08:56 AM

#31

Eric Lyublinsky

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From: Tri-State

Quote:

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

Ya looks like the guys in the UK have bin doing this for a while does help not willing to do this on my own brand new car.

Eric

Mar 3, 2004 | 09:01 AM

#32

natedogg

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From: Peoria, IL

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.

Mar 3, 2004 | 09:11 AM

#33

Eric Lyublinsky

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From: Tri-State

Quote:

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.

Let fix the problem first then I can worry about anther mod.

Apr 2, 2004 | 10:02 AM

#34

Coolguy949

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From: Orange County, CA

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.

Apr 2, 2004 | 10:13 AM

#35

TRDHarrier

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From: NYC

i was planning to purchase the PE pumps. I shouldnt be needing one if I'm not running over 320whp right???

Apr 2, 2004 | 10:20 AM

#36

Grod101

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From: NYC/NNJ

Quote:

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.

all it takes is a few seconds of no fuel to cause det. if this happens BANG! there goes a ring or a piston........ It is not hard to blow up a engine with running lean... even for a short time