Fuel pump or fuel pressure reg failure?
02-02-2004, 09:43 PM
#1
Big Baller
Thread Starter
iTrader: (1)
Join Date: Nov 2002
Location: Washington
Posts: 1,821
Car Info: 93 BG5, 00&01 GM6, 06LGT, 07STi
Fuel pump or fuel pressure reg failure?
I think my FPR failed because I have an off idle stumble... a horrible stumble. Sometimes it even dies. This happened before when my vacuum line to the fpr split open.
However, now I'm starting to think fuel pump problem because sometimes at idle my engine surges and I can here the fuel pump cycling in unison.
So, is the fpr bypassing at max rate which is making the fuel pump work less for an instant, giving me the sound of cycling, while at the same time dropping fuel pressure sufficiently to cause the cars RPM's to dip... or is the fuel pump taking a big capola?
Lastly,
do we have a fuel pump control circuit or is our pump supposed to run continuously?
any help would be appreciated. I can't seem to find anything on this. Thanks.
However, now I'm starting to think fuel pump problem because sometimes at idle my engine surges and I can here the fuel pump cycling in unison.
So, is the fpr bypassing at max rate which is making the fuel pump work less for an instant, giving me the sound of cycling, while at the same time dropping fuel pressure sufficiently to cause the cars RPM's to dip... or is the fuel pump taking a big capola?
Lastly,
do we have a fuel pump control circuit or is our pump supposed to run continuously?
any help would be appreciated. I can't seem to find anything on this. Thanks.
Thread
Thread Starter
Forum
Replies
Last Post
ImprezaRSX
Engine/Power - EJ20T (pre-2006 WRX and JDM)
0
02-03-2004 02:09 PM
JohnB
Stereo & Security
1
06-30-2003 12:14 PM