low computer ground

[1stYooper]

I have a 93 Jetta 2.0 that has a low computer ground fault. The closest VW dealer says to replace the distributor. Does this seem OK? It is never the computer. It send a signal to one injector all the time and nothing to the others.
Thanks

[boschmann]

I don't see what the distributor would have to do with three injectors not getting signal. Are you getting a spark from the coil? Check resistance to ground on the ECM grounds - pins 1, 33, 55, 56, & 58.

[1stYooper]

Spark is there it fires once maybe. I will check the grounds. Theythe VW dealer says the computer low ground can/is normally caused by the grounding through the distributor. With the low ground the computer does not see the return signal.

[boschmann]

There are three pins on the distributor harness, brown/yellow is ground all the time, black/red is 12V+ with the key in on position and white/red is a ground signal from the Hall sensor back to the ECM. If the coil puts out a steady spark then I don't see a problem with the distributor. I'm not familiar with their term of low ground, the ECM gets it's grounds from the above stated pin connections. It sounds like you have spark & the problem is in the fuel delivery, have you tried jumpering the fuel pump relay so it runs all the time. You might want to check the fuel pressure also.

[1stYooper]

It gets good siganl but only to 1 injector. The fuel pressure is good on the rail the 1 cyclinder floods. The real code is weak computor ground.

[boschmann]

Do you have the code number? You can retrieve it yourself if needed.

[1stYooper]

No I don't it is not running at all so do they mean anything? Also What does the letter on the end of the ecm mean the one on the car is an e one on ebay is f?

[boschmann]

The letter(s) at the end of the VW part # is a revision level. Without doing further research it's hard to say but the F version should work in place of an E.