94 legacy electrical issues, I'm about to give up.

[herculesinwyoming]

I have been searching thee forums for ideas but have not seen a similar post. 

my 1994 legacy died while driving.  Now the fuel pump is not getting power, on the dash the fuel gauge is not working. there  is  no spark, and when i put the clutch in the temperature gauge goes up.  So engine does crank over fine just with no fuel or spark.  I am wondering if the ECU may have failed. 

There are no ECU codes 

 

I don't want to just throw random parts on it hoping to find the right one. I have checked all the fuses and cleaned all the grounds i can find. 

Anyone have any ideas? 

[Bushwick]

Check your fuses.

 

I know if a crank position sensor fails, it'll cause no fuel/spark. They can fail w/o warning and are vital to running. I'd inspect it and probe with a multimeter and see if it's getting power, along with probing the sensor unhooked to see if it's in spec.

 

Good news is CPS are easy to replace and not that expensive. Could save a few bucks by getting one at rockauto vs. local parts store, though they might not be too expensive locally.

[herculesinwyoming]

i will have to try that, makes good sense. except would it kill the fuel gauge too?  i did make sure it has fuel in the tank but reads empty 

[wtdash]

HI,

3 thoughts:

1: Do you get the steady blink when checking codes to verify the ECU diagnostics IS working? And you looked for both active and historical codes?

2. MAF sensors tend to fail on these....but usually it's a random failure that won't cause your 'no-start' condition. The car will die, but usually start right back up....but another used MAF may be worth a shot, if readily avl. (Every USA Subaru except the SVX and '91-'94 turbos used the same green label MAF from '92-'98-ish.)

3. Battery / Alternator condition? New and/or known good?

 

Also, the fuel gauges are known to be erratic on the older Subies. My '96 is less than accurate below a 1/2 a tank, due to the sensors sensitivity (one on left and right)  wearing out, I believe.

 

 

Did you search the Legacy Central site, too?

 

GL,

TD

[herculesinwyoming]

I will pay them a visit. This is just been a odd problem but must be a simple fix if I find it