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No fuel after Engine swap

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Old May 5, 2015 | 08:09 PM
  #1  
ojasia's Avatar
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From: Oahu
Default No fuel after Engine swap

Is there something I missed built a4 with OBD-1 swap ECU Just finished everything up checked oil pressure good Went to check fuel pressure and nada. Fuel pump worked great before engine swap I have not done any further troubleshooting yet, so just wanted to make sure I did not miss something. I have two ground by the valve cover driver side connected and one down by the transmission, I forgot if there was one hooked up to the head or not but those three in the engine bay and nothing else was touched any tips hint would be appreciated Thanks. 01 Base prelude OBD-1 ECU OBD1A adapter, TD-61U with Rywire OBD1 dizzy prelude adapter.
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Old May 5, 2015 | 08:17 PM
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SpokaneSpeed's Avatar
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From: Spokane, WA
Default Re: No fuel after Engine swap

There should be an ECU ground on top of the thermostat housing...
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Old May 5, 2015 | 08:28 PM
  #3  
ojasia's Avatar
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Default Re: No fuel after Engine swap

oooo yup most deff. forgot that one me think, you think that its possible to short fuel out. Ill go check anywho. Thanks!
BTW my car cranks tho and has dash lights, dingy key sounds n stuff.
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Old May 5, 2015 | 10:14 PM
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Default Re: No fuel after Engine swap

Do you hear your fuel pump priming? If not check your main relay located under the dash may need to be replaced and or re-soldered. Check all fuses while your at it. Any Check engine light codes?
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Old May 5, 2015 | 10:25 PM
  #5  
ojasia's Avatar
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Default Re: No fuel after Engine swap

Well I was just finishing up before sun down before I posted, and then was going out to eat and checked for that Thermostat housing ground and found it hanging out over by the cylinder temp sensor so tom. I'm gonna hook that up and see if I get pressure Ill keep ya'll posted if it works or not, If not then I will be digging deeper into actual fuel system trouble shootings. I'm pretty sure this should resolve it because it worked fine before swap and the fuel pump was also swapped a couple months ago for anticipation for the swap so that is also new as well. Thanks all.
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Old May 6, 2015 | 12:49 PM
  #6  
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Default Re: No fuel after Engine swap

Yeah if that isn't connected you won't have fuel or spark, the engine will still turn over and you'll still have power to your accessories but that's about it.
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Old May 7, 2015 | 09:08 AM
  #7  
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From: CO
Default Re: No fuel after Engine swap

Any update, did the t-stat ground fix your issue? Most of the goofy problems after swaps seem to relate to that ground point.

If not, start off by checking to see if the fuel pump energizes when you turn the key, if it gets power but doesn't prime, etc.
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