as requested im posting this all new.
problem started yesterday i gave her a tune up and she ran fine.
my son came home from work last night and she died in the driveway after chugging up the street.
items changed during tune up
plugs,wires,cap and rotor,coil and icm.
i tested for spark at coil and plugs.
i checked fuel psi. 60 psi with koeo held 55 psi for30 min several times.
fuel pump and sending unit are 14 mths old.
pulled plūgs and all are soaking wet with fuel.
tried ether and she wanted to start several times so im confused about the fuel issue because she doesnt try to start every time i use ether.
i can hear pump running for 30 to 60 sec after key is off but at times i dont hear it at all after cranking it over.
i am seriously ready tobut she belongs to my son.
any help would be greatly appreciated .
thank you in advance.

 

Double check the wirering order. If OK put the old cap and rotor back on.

 

wires are in the right order.
im changing the cap and rotor and the icm under warrantee in the am.
i forgot to note that i was getting a code of p1351 if im remembering the #'s right.
the icm is getting too much voltage on its signal input. it should be 0.5 v to 4.5 v and all the ignition circuit plugs are good,the wires and plugs to the VCM are all good.
i cleaned all the grounds for the ign circuits and all the ign circuit plugshave been coated with dielectric grease to keep them clean and dry.
i will post after i get the new parts on tomorrow am.
thanks.

 

what brand ignition products did you use ? these trucks are picky for after market products...

I suggest using ac delco. These motors run good with ngk plugs also

 

a/c delco plugs,bwd premium select cap and rotor,
a/c delco icm and belden edge premium silicone wires.

 

Id replace the cap and rotor with delco too.. Ive had issues with bwd caps and rotors with these motors...

 

ive been using bwd cap and rotors on it for several years without trouble.
but since its under warrantee im going to use the bwd to get it running again and if it fixes the problem great.
as soon as i can afford to swap them over to a/c delco i will.
right now i just need to get it running so my son can have it back.
shes killing my checkbook right now so its a case of make it run and buy the good stuff as i can.
ive got almost $3000.00 into the engine since the EX spun the bearings cause shes a #&*$$ and cant drive worth crap. one of the reasons shes the EX.

 

1995 was a hodge podge year for the 4.3L engine in S & T body, (1 of the reasons Olds did not produce the Bravada in 1995). 3 different computer control systems and 2 different fuel delivery systems. Two things we need to know:

Does your engine look like this?



And, does your distributor cap look like this HEI ignition:




Or this, EDI ignition?

 

my engine looks like this and my cap has the horizontal style terminals.
its also a true OBD 2 VCM.
my computer is on top of the overflow tank by the battery, i had a box sitting on the left side of the engine in the picture.

 

If that's a picture of your engine, it is OBD1.5 and not fully OBDII compliant.

Fuel pressure spec is 55psi to 61psi and must remain above 50psi for at least 10 minutes after the pump shuts off, so you're good there.

Plugs being wet could be due to the fuel return line leaking in the plenum. This will not show up on a leakdown test, (where you held 55psi for 30 minutes). Checking leakdown tests the check valve at the pump, the pressure line to plenum, the pressure line to the injector, the injectors, the diaphragm and the valve inside the regulator.

Could also be a problem with the PCM signal to the ignition control module. On EDI systems like yours, the PCM tells the ignition module when to fire the ignition coil.

Edit: In your signature you list a 2000 S10 LS 4DR 4x4. That vehicle originally came with a 4.3L CSFI engine. That engine is the next version after your 1995, it is fully OBDII compliant.

Just out of curiosity, has the distributor been out of this engine?