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Old 04-10-2012, 07:35 PM   #1
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No fuel after Pi swap

I have a 98 gt. I pulled the engine because my original plan was a 5.4 swap, after some research I bagged that idea. I ended up just doing a pi swap and I just got everything buttoned up. I turn the key and the engine cranks fine but there is no fuel at the rails. I started by checking the schraeder valve on the fuel rail and there is not any pressure. I have 12 volts to the inertia switch in the trunk but only like 7.6 volts at the plug to the fuel pump at the tank when turning the key on. I found in my haynes manual that the brown with pink stripe is the power wire for the pump, so I ran a direct lead to that from the battery and a direct ground and nothing. Is there anything else I can check or did my pump actually just go out while the car sat?
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Old 04-11-2012, 11:20 AM   #2
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Did you trip the fuel inertia switch in the trunk?
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Old 04-11-2012, 03:26 PM   #3
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Re: No fuel after Pi swap

the inertia switch was not tripped, so I purposely tripped it just to be sure. I even bypassed the switch and the pump is still not turning on. I have double and triple checked the wiring in the engine bay and cant seem to find anything wrong.
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Old 04-12-2012, 07:08 AM   #4
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Re: No fuel after Pi swap

Sounds like the pump to me
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Old 04-12-2012, 10:19 AM   #5
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Re: No fuel after Pi swap

If even hotwiring the pump directly and still no action, I would agree with the pump is no good.
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Old 04-12-2012, 04:28 PM   #6
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Re: No fuel after Pi swap

yeah I dropped the tank out last night and even on the bench it does not work so I guess I got my answer. I also learned that I do have the crappy fuel system but oh well. I am going to get a replacement in it and hope all goes well.
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Old 04-13-2012, 08:04 AM   #7
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Re: No fuel after Pi swap

If you have any future plans for bigger mods (heads, cams, NOS, or forced induction) you may want to go ahead and drop in a 255LPH pump while your in there to save you from dropping the tank again later
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Old 04-13-2012, 09:18 PM   #8
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Re: No fuel after Pi swap

Well I decided to just go with a stock replacement for now. I will upgrade the pump at a later date and change the fuel system to returnless at the same time. On a side note for anyone who needs to replace theirs in a 98. There is not a listing for non california emission controlled vehicles that is just the pump. They only list the entire unit but it turns out you can use the cal. emission pump without any issues. I also noticed that the airtex pump is actually made by Walbro.
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