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does the fuelpump always come on for 2 seconds when you first turn the key on?
No, when it does the vehicle starts. stalls then no pump prime. I cannot figure out what is resetting to alow it to prime
when it does prime
will it continue to run?
or just start and die?
yes, you need to keep it running with the peddle or it will stall, and then no prime or pump
from the way you explain
it sounds as if you may have a bad fuel pump
the computer only gives power to the pump for 2 seconds
unless the engine is turning
it sounds as if your pumpmauy be sticking
I dont know why it would run if the pump was bad. I had it running last night for about 20 min before it stalled. I hate to pull tanks
these can just get weak and not have enough pressure
can just stick and not run at all
it sounds as if yours is bad
why would a weak pump keep the computer from the prime
does the relay click when you first turn the key on?
no and no power at the fuse. when I put 12V direct to the fuse nothing happens
does it not have power on the fuse for 2 seconds?
for the first 2 seconds when you first turn the key on
i see you have already replaced the computer
was it a new one?
I changed the ECM in the distributor
the ignition module
if the relay isnt clicking on for the first two seconds
the problem is the ecm[computer],,behind the glove box
the ecm isnt sending a signal to the relay
will that act intermitent
a bad computer can do anything
i do want to give yoiu a wire diagram
so you can check the wiring if you must
will that help
well yes, I will change the comp tonight. what a pain in the ass
these older computers arent too high
they cost around $90+/-
but do check your wiring first
can I ask more questions tomorrow? if this does not work or changes the symtoms
just sign in and i will answer when im on line
just reply back to this question
are you ready for some diagrams?
this is the relay..
NOTE: A fuel system pressure test is part of several of the Diagnostic Charts and Symptom Checks. To perform this test, follow this procedure:FUEL PRESSURE TEST 1. Turn engine OFF to relieve system pressure. - Disconnect negative battery terminal to avoid possible fuel discharge if an accidental attempt is made to start the engine. - Loosen fuel filler cap to relieve tank vapor pressure. - The constant bleed feature relieves fuel pump system pressure when the engine is turned "OFF". 2. Uncouple fuel supply flexible hose in engine compartment. Install fuel pressure gauge between steel line and flexible hose. 3. Tighten gauge in line to insure no leaks occur during testing. 4. Connect negative battery terminal and START engine and observe fuel pressure reading. It should be 62-90 kPa (9-13 psi). If not, refer to DIAGNOSTIC CHARTS/FUEL SYSTEM PRESSURE TEST (CHART A-6). 5. Turn engine OFF to relieve system pressure. - Disconnect negative battery terminal to avoid possible fuel discharge if an accidental attempt is made to start the engine. - Loosen fuel filler cap to relieve tank vapor pressure. - The constant bleed feature relieves fuel pump system pressure when the engine is turned "OFF". 6. Remove fuel pressure gauge. 7. Reinstall fuel line. 8. Connect negative battery terminal and START engine and check for fuel leaks. 9. Install air cleaner assembly.
where is and how do I use the fuel pump check wire listed on the diagram
you just need to check the gray wire to the pump
the dlc is located under the dash on the drivers side
OK I will rap my head around this and get back to you. Thanks alot
you are very welcome
again..i think you need a computer
will get one tonight.