Hello All.
92 940 regina/rex mileage unknown but very high. sons car.
a pattern has developed as the car seems to stall after around 15 miles driving or if it does not stall when shut off the car will not re-start. pretty much happens all the time. seems like the car has to be up to operation temp for stall/no start. always starts when cooled down after a few hours.
before all this the fuel pump died and i replaced it with a Junkyard pump. the JY pump looked like very recent replacement and the sender it was attached to also looked almost new without even a hint of staining from gas.
what i have done.
tested the fuel pump with analog gauge T,ed in at rail and it reads 35psi. squeezed the fuel line and pressure went up past 60 psi real quick. think its good. it is a quiet pump compared to the scam tech pump that died = 2yrs?
the fuel pump relay gets very very hot and can only keep finger on the relay for about 7-10 seconds before OUCH!!! this seems suspicious?
tried a noid light on injector connector when would not start and it lights up.
JY parts i swapped i had on the shelf.
JY coil/power stage. cleaned coil contacts.
new fuel filter
new plug wires
new spark plugs
cleaned grounds on intake and right and left side engine bay.
known working RSR relay (from my car)
used/newer cap and rotor.
cps looks new and its 3 yrs old.
removed cat and confirm its not plugged. (this is always fun)
replaced fuel pump relay with 3 known good ones.
swapped out IAC valve with used one i had on shelf.
cleaned throttly body.
swapped out Fuel pressure regulator. used from shelf.
cleaned ground in trunk for fuel pump.
visually looked for vacume leaks.
i am out of ideas as i am no mechanic. any help will be greatly appreciated.
thanks
Mike