2003 fuel pump
Thread Starter
Racer
Joined: Nov 2011
Posts: 274
Likes: 12
From: Louisburg NC
2003 fuel pump
I have a 2003 vert with no fuel pressure. Fuse is good. Relay is good. It appears there are 2 different fuel systems for this thing, early or late. How can I determine which one I have?
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2020 Corvette of the Year Finalist (performance mods)
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look behind the driver side rear wheel and if you have the early style fuel system you will see a fuel hat with 3 lines going to it at the bottom side of the tank, you will also have a fuel filter mounted to the driver side inner frame rail around the rear wheel area... you might have to take the metal access panel off from the tank to see the hat and lines but it is just a couple of bolts... if you don't see any of this then you likely have the later fuel system, if you are still unsure and can post pics we can tell you
Moderator, Tech Contributor
Joined: Sep 2013
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From: Cape Coral, Florida
I don’t know if you are any good with a test light and multimeter but I did a YouTube video on the fuel pump relay circuit testing...a quick check is to jump the load side of the relay which are pins 87 and 30...if your not mechanically inclined and need to take it to a shop this is an easy system to diagnose...and if they can’t diagnose it correctly they should be in another business !!
Last edited by C5 Diag; Feb 1, 2020 at 08:16 AM.
Thread Starter
Racer
Joined: Nov 2011
Posts: 274
Likes: 12
From: Louisburg NC
Thanks for the video. I'll try that.
FYI, I am, somewhat, mechanically inclined. I changed the clutch in this thing last month. :-)
FYI, I am, somewhat, mechanically inclined. I changed the clutch in this thing last month. :-)
Last edited by oilyfishhead; Feb 1, 2020 at 06:01 PM.
Moderator, Tech Contributor
Joined: Sep 2013
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From: Cape Coral, Florida
Thread Starter
Racer
Joined: Nov 2011
Posts: 274
Likes: 12
From: Louisburg NC
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Moderator, Tech Contributor
Joined: Sep 2013
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From: Cape Coral, Florida
Thanks for the brewski !!...not all new parts are good unfortunately...they still need to be verified as good !!...and for future reference also stick with OEM parts especially any sensors and in your case relays.
