Quote:RE: Fuel pump problem-no three second prime or purge(if Pink is dead, so will be pink/blk so will be pump dead. the above PINK not keying the relay means, ECU is failing. only why remains.
Key on Blue black 12.45 turning starter 11.01 (GOOD)
Key on Black white 12.21: turning starter10.7 (GOOD)
Key on Pink 12.07 key on never changes: turning starter 10.7 (dead)
Pink black 0v key on, let off, or start 0v
The ECU is failing. ,
quesiton1:
ECU tests, (key on CEL must GLOW Does it?) if not ECU is dead or power pins to ECU are dead. The CEL = cluster check engine lamp MUST GLOW KEY ON, does it.? if not power to ECU is missing.
question 2, Are the wires in the car, to ECU or EFI hacked ? (see wires cut or transgressed upon ? from stock)? inspections are very easy and effective if ECU malfs.
seen this yet.
http://www.fixkick.com/ECU/1996/96ECU.html
your ECU, is there.
i annotated each pin, to show what voltage are there.
C2 , see power and ground here?
connect meter minus black lead, to battery negative LUG (jumper test lead wire,), for best readings.
then probe with red meter probe (20vdc range) to the ECU pins key on.
did you connect your OBD2 scanner first thing?, see if the ECU connects and communicates and shows all sensor readings? if ECU is dead now , above pins are wrong voltage (power pins)
inspect ECU yet, lid off,
sniff sniff for smells of burned things. look at Q106 , is it burned or cracked? Q106 is FP relay driver transistor on board.
look next for bulging or cracked/leaking, large (can shaped) CAPS. in the HTML link above i have photo of ECU PCB, see Red X on top of 3 caps that like to leak, top left is prime suspect.
http://www.fixkick.com/ECU/1996/Full96%2...volts1.pdf
Quote:Fwiw(the relay is doing its job, correctly , ECU Q106 is dead so will be the pump, and relay dead, that is its purpose to prevent as seen on TV
I have swapped relays, main and FP. Fuel pump relay works correctly in main relay socket. I have also swapped for another good relay. Relay seems good.
Why 12v at pink ECM wire, but no power to pink/black.
crash and burn. fuel fires.
basically your ECU is dead, but we test it first to see why ....
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back to square 1, no start car. cranks but no start
and that is step 1 on all cars is ..... , CEL lamp glows key on?????, it must
or if CEL dead, use the scan tool next, (lamps do burn out after 22 years, but no big deal)
the tool will show CEL status on or off, the lamp really is not important now, the scan tool answers that exhaustion, first.
if the scan tool shows comm failures, (no communications, that means the power pins on ECU are dead. (12vdc power or ground to C2 is wrong)
when did car fail driving down road?? or parked in drive way or garage or after rewiring things in car ECU died, history can help here.
or bought car dead.?
if car was molested, we inspect all wiring carefully for transgressions, (stock wiring good, not stock bad) splices, to wires? bad, see tape balls, or liquid tape balls on wires, bad.
22 year old cars can have things added to car, lots of things, remote start from h3ll is one big loser.(cruise, or other upgrades can be a horror)
make sure the TPS on the throttle body, see 4 wires to that sensor there make darn sure the wires are not cut, damaged, and the TPS is not cracked and damaged.
This ECU may cut the FP relay if TPS , TP pin is at 3.7vdc or able (called unflood mode to ECU)
http://www.fixkick.com/sensors/96TB-isc.JPG
http://www.fixkick.com