Chipped p28 - not priming fuel pump

 
Old 03-24-2005, 06:46 PM
  #26  
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Default Re: (93turbo16)

It took me a while to pick the right replacement capacitors on digikey. For future reference, these are the part # for the 7 replacement caps needed for a P28:

P5518-ND
P5517-ND
P5552-ND
P5549-ND (x3)
493-1733-ND

You will notice that the last number differs from the others. That's because the NHG series didn't carry a 47uf 10v cap. I had to order from the PW series.

And the cap that goes out and causes the fuel pump not to prime is P5552-ND.
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Old 09-03-2015, 04:51 AM
  #27  
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Default Re: Chipped p28 - not priming fuel pump

bump for some really good knowledge here.
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Old 09-03-2015, 12:44 PM
  #28  
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Default Re: Chipped p28 - not priming fuel pump

stop bumping 10 year olds threads
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Old 09-04-2015, 09:23 AM
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Default Re: Chipped p28 - not priming fuel pump

Is there a rule against doing that?
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Old 03-27-2017, 02:03 PM
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Default Re: Chipped p28 - not priming fuel pump

Agreed, this old thread is worth a bump. I just ordered the capacitors from Digikey. Cost $2.13 + shipping. Cheap insurance in my opinion.
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Old 10-20-2018, 02:55 PM
  #31  
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Default Re: (JRciv)

Originally Posted by This One View Post
Ive had a few ECU'S with bad fuel pump output or something.
On those we just took the Fuel pump output whichever pin it is, and ground it on the harness side.
the fuel pump should come on with ever you turn the Ignition on now.
i can you make a little scheme to do this jumping to a p28 who have a delay prime pump? Thank you
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Old 05-31-2019, 10:18 AM
  #32  
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Default Re: (JRciv)

Originally Posted by hybridb18 View Post
where is this capacitor at???? where in the ecu?? What number on the board?? i have the exact same problem with my ecu
I believe this capacitor is “c14” on the ecu, mine fried and now it doesn’t prime/run my fuel pump. Its on the far right side of the circuit.

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