No Start No Codes

M

mkiiitnr

Big Sinlge
Mar 24, 2006
25
0
0
kansas
Ok so here we go, car started up fine ran for a few minutes then started to hesitate then die. checked everything then i noticed the fuel pump not turning on. the fuel pump is stock and i can usually hear it when i turn the key to the on position. checked fuel pump relay per tsrm and everything is working. checked resistors, everything ok. then efi fuse, works fine. jumped fp to 12v just to make sure relay works, it works. ok now fp to b+ while the key is in the on position, nothing, no noise at the fuel regulator. could it be my fuel pump that crapped out?
Thanks for the help
 
Muzy

Muzy

Member
Oct 3, 2008
182
0
16
Alberta
That would be a good guess. Is it below freezing over there? May have some ice in fuel.
Add some fuel antifreeze Let it sit about 1/2 hour, try again. If it is the fuel pump sometimes a person can get it running again by thumping the fuel tank with a 2x4 while other person cranks engine. Note this is temporary to get car off road without a tow. muzy
 
C

cjsupra90

previously chris90na-t
Jun 11, 2005
1,029
0
0
48
Lakeland, FL
Yeah, just like JJ said, its not supposed to run when you turn the key on. Sound like someone has done some rewiring and changing of the circuit.. Problem is probably in that reworking of the circuit....
 
M

mkiiitnr

Big Sinlge
Mar 24, 2006
25
0
0
kansas
car is in garage, temp is fine. ok maybe i dont hear the fuel pump when the key is in the on position, but i do hear it when the car is running. in any case there is no nose of any sort at the fuel regulator when fp is jumped to b+ with the key on
 
M

mkiiitnr

Big Sinlge
Mar 24, 2006
25
0
0
kansas
so are my findings with measuring amps mean that there is current flow and that my pump is faulty? sorry for the noob question cause im not electrically inclined like some of you guys, just need conformation
 
3p141592654

3p141592654

90T
Oct 11, 2005
3,816
16
38
Thousand Oaks, CA
On every meter I've used the red lead needs to plug into a different connector to read current. Did you do that when making the above test?

If I understand what you are saying, then its reading 8 on the 2000uA scale, which is 8 microamps! The stock pump should draw more like 5-6 amperes!

By the way, that scale is too small for measuring fuel pump current draw. A 10A scale would be better.

(Edited to fix brain-damaged comments made yesterday.)
 
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dumbo

dumbo

Supramania Contributor
Jul 16, 2008
1,911
0
0
Albera, Too Far North
if it only draws 5amps, then i would go ahead an connect your meter in series, cause unless you got a amp clamp, your not gonna get any useful reading.
 
jetjock

jetjock

creepy-ass cracka
Jul 11, 2005
9,439
0
0
Redacted per Title 18 USC Section 798
Placing the meter across +B and FP is putting it in series. The factory test spec for that procedure is no more than 6 amps. Mine runs at 4.5

Using a scope lets you determine the condition of the pump's brushes, commutator, and read it's rpm....
 
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