i have a walbro 255 fuel pump and some times it does not prime and the car wont start it doesnt always happen only once or twice a week depending on how offten i drive it. could it be the main relay? also if you turn the key back and forth it will eventually prime but sometimes it takes up to 20 minutes of messing with it.

 

mine does the same thing from time to time...i haven't got a chance to look into it further yet,been too busy

 

99% it's the main relay, that happens a lot.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">99% it's the main relay, that happens a lot. </TD></TR></TABLE>

This is the time of the year these things go for some reason. When i worked at the dealer years ago cars would get towed in all the time for the main relay. I would have to say they are effected by the heat because the amount of cars that came in for that issue during the summer months was damn near double the amount.

 

i agree on the heat thing.


i always kept a spare main relay in my glove box when i had a honda/acura i drove on the street haha.

 

for what its worth one of my customers car had a chipped ecu that would be finicky about getting the fuel pump or prime. switched out the chipped ecu to a differant one, and the problem was solved.

 

mine does the same thing once or twice a month..i just live with it

 

there was just a thread exactly like this while go... but my hatch does this from time to time. ive opened up the main relay and its mint.

my crx use to do this in the heat all the time and i opened it up and one of the solder joints inside had a slight crack in it so whenever it gets hot out it expands and doenst make contact i guess. i just threw some solder on it and it has been for years.

but i dont understand why my hatch is doing it... i have a walbro pump as well..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DaveF &raquo;</TD></TR><TR><TD CLASS="quote">for what its worth one of my customers car had a chipped ecu that would be finicky about getting the fuel pump or prime. switched out the chipped ecu to a differant one, and the problem was solved. </TD></TR></TABLE>

Yep, check the big capacitor in the ECU. It controls the fuel pump and goes out too.

 

Your issue as mentioned is more then likely your main pgmfi relay.

The c14 cap usually just fails all together at once. Regardless it is always a good idea to inspect to inspect your old cap for leakage.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mtber &raquo;</TD></TR><TR><TD CLASS="quote">The c14 cap usually just fails all together at once. Regardless it is always a good idea to inspect to inspect your old cap for leakage.</TD></TR></TABLE>

Thats the reason I said it. I had a car act like the main relay, but was C14. Matters how it burns the board or fails.


Modified by Turbogixxer at 8:11 PM 7/10/2008

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostedgsreg &raquo;</TD></TR><TR><TD CLASS="quote">sometimes it takes up to 20 minutes of messing with it.</TD></TR></TABLE>

just smack the relay with a screwdriver and it will fire right up.

 

I was the one who made the thread a month ago or so...my car still does this somtimes, it did it today all day but before that i hasnt done if for a month. If I unhook my battery for a min. put it back on the car usally starts right up. ?? do you guys think its the c14?

 

i have a hondata s300 ecu that is only a few months old so i will try the main relay thanks