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04 lightning problem

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Old Feb 14, 2008 | 11:59 PM
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04 lightning problem

I tried to open it up the damn thing was bogging bad, so bad I had to let off the gas Would you say that it's a fuel starvation problem It's not throwing any check engine light codes or anything.....i replaced the fuel filter and fuel pumps
 
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Old Feb 15, 2008 | 11:47 AM
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One possibility is that the high speed fuel pump isn't turning on.
 
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Old Feb 15, 2008 | 01:42 PM
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what would cause the fuel pump not to come on how do u get the build number on the lightning
 
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Old Feb 15, 2008 | 02:58 PM
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There is a relay that puts the pumps in high speed. If it goes bad it won't turn them on hi.
 
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Old Feb 15, 2008 | 08:49 PM
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Originally Posted by Silver Streak
One possibility is that the high speed fuel pump isn't turning on.
I agree with Streak, the high/low relay might be bad, but that's such a rare occurrence I have to believe it's gotta be something else.

Do you have a custom tune on the truck?

What modifications do you have?

Also, how do you know it doesn't have any codes? Did you scan it, or are you relying solely on the SES light?

Stewart

PS - Build number used to be obtained by calling SVT directly. But since they have been "disbanded", I'm not sure who you would call.
 

Last edited by Stewart_H; Feb 15, 2008 at 08:53 PM.
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Old Feb 15, 2008 | 10:26 PM
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I thought that was a pretty common failure. I've seen two of them just in Tulsa.
 
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Old Feb 15, 2008 | 10:31 PM
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Originally Posted by Silver Streak
I thought that was a pretty common failure. I've seen two of them just in Tulsa.
Oh dang! LOL!

My post was based on all the times (these past few years on the different L forums) I've read where someone suggests checking the hi/low relay because of fuel issues, and never once had I read where one was bad.

Now I know of two instances!

Stewart
 
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Old Feb 16, 2008 | 12:35 PM
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the truck is stock where is the fuel pump relay and how do i test it thanks
 
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Old Feb 17, 2008 | 02:33 PM
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Originally Posted by Stewart_H
Oh dang! LOL!

My post was based on all the times (these past few years on the different L forums) I've read where someone suggests checking the hi/low relay because of fuel issues, and never once had I read where one was bad.

Now I know of two instances!

Stewart
3! My 03 had the same issue. Started around 4000rpm under WOT
 
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Old Feb 17, 2008 | 03:36 PM
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Originally Posted by wd13
3! My 03 had the same issue. Started around 4000rpm under WOT
LOL! You guys kill me!

Watch, now my relay will take a dump!!

Stewart
 
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Old Feb 17, 2008 | 11:09 PM
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Originally Posted by Stewart_H
LOL! You guys kill me!

Watch, now my relay will take a dump!!

Stewart
Nah! Yours isn't the European model. LOL!
 
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Old Feb 18, 2008 | 05:08 AM
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Originally Posted by wd13
3! My 03 had the same issue. Started around 4000rpm under WOT
what did u do to fix it
 
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Old Feb 18, 2008 | 01:04 PM
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I did a couple things at once. I replaced the relay and the infamous T that always seems to give the L's a hard time. I didn't want anymore trouble out of it.
 
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Old Feb 18, 2008 | 01:23 PM
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Originally Posted by wd13
Nah! Yours isn't the European model. LOL!
I guess we should start a list of all the things that seem to be problematic to the '03/'04 UK Lightnings shipped over to the states, versus the '99 - '02 US Lightnings, eh?

LOL, you crack me up bud!

Stewart
 
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Old Feb 18, 2008 | 09:32 PM
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Originally Posted by Stewart_H
I guess we should start a list of all the things that seem to be problematic to the '03/'04 UK Lightnings shipped over to the states, versus the '99 - '02 US Lightnings, eh?

LOL, you crack me up bud!

Stewart
Thats a heck of an idea. I think the biggest problem was converting to left hand drive. It seemed to leave alot of unresolved problems with the truck as a whole
Let me know if there's anything I can do to help with the list. LOL
 
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