Fuel pump primes after 5-10 minutes of waiting
#1
Honda-Tech Member
Thread Starter
iTrader: (1)
Join Date: Apr 2005
Location: Cleveland, OH
Posts: 1,063
Likes: 0
Received 0 Likes
on
0 Posts
Fuel pump primes after 5-10 minutes of waiting
Hello people,
Heres the situation.
Car: 93 Honda Civic
Motor: Stock LS on boost.
ECU: Chipped P75 ecu with Moates Demon RTP
After turning the key to the on position the check engine light comes on and stays on for about 5 minutes and then turns off. When the MIL light turns off finally my fuel pump starts priming.
I swapped ecus with a stock non-chipped ecu and everything works fine. So I know the problem resides in the chipped ecu.
Then I removed the J1 jumper from the chipped ecu and tried again and the problem still persisted.
I read somewhere that the C14 capacitor is problematic and tends give out. So I tried swapping that out with one I got from another ecu. Problem still persisted.
I really would like to fix this ecu instead of socketing and chipping another ecu. What other troubleshooting could I do on my chipped ecu and do you have any idea what the proble could be. Thank you
Heres the situation.
Car: 93 Honda Civic
Motor: Stock LS on boost.
ECU: Chipped P75 ecu with Moates Demon RTP
After turning the key to the on position the check engine light comes on and stays on for about 5 minutes and then turns off. When the MIL light turns off finally my fuel pump starts priming.
I swapped ecus with a stock non-chipped ecu and everything works fine. So I know the problem resides in the chipped ecu.
Then I removed the J1 jumper from the chipped ecu and tried again and the problem still persisted.
I read somewhere that the C14 capacitor is problematic and tends give out. So I tried swapping that out with one I got from another ecu. Problem still persisted.
I really would like to fix this ecu instead of socketing and chipping another ecu. What other troubleshooting could I do on my chipped ecu and do you have any idea what the proble could be. Thank you
#5
Honda-Tech Member
Join Date: Feb 2007
Location: chicagoland, illinois, US
Posts: 449
Likes: 0
Received 0 Likes
on
0 Posts
Re: Fuel pump primes after 5-10 minutes of waiting
I've seen that problem before, I can't say what happened internally with the ecu but it was permanently resolved by completely changing the ecu.
#6
Honda-Tech Member
Join Date: Dec 2005
Location: in the heat
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Re: Fuel pump primes after 5-10 minutes of waiting
It is a problem with the ecu. Pretty easy fix pm if your want to resolve the issue,
-Justin
Advanced igntion
-Justin
Advanced igntion
#7
Honda-Tech Member
Thread Starter
iTrader: (1)
Join Date: Apr 2005
Location: Cleveland, OH
Posts: 1,063
Likes: 0
Received 0 Likes
on
0 Posts
Re: Fuel pump primes after 5-10 minutes of waiting
Yea I figured it was a problem internally in the ecu. I was trying to avoid replacing the ecu. Instead I wanted to pinpoint the problem within the ecu by replacing components or fixing a trace whatever it takes. Through this Im hoping to learn how to fix ecus instead of just replacing them
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
speedsk899
Honda Civic / Del Sol (1992 - 2000)
7
06-13-2014 05:07 AM