No power to 2nd & 3rd fuel injectors

[stock1g4g63]

Ok, my car has been sparingly going into a 'no power' mode here and there where the idle is really rough, and the car has absolutely no power going anywhere. The problem then became permanent. I checked all the hoses and clamps, no leaks from what I could tell, I changed the TPS thinking that might be the problem. A mechanic took a look at it and said that the no. 2, 3, injectors weren't getting any power (whatever that means), so thinking it was an ecu problem, I changed the ecu with the same problem. Any ideas/

 

[romeen]

Any CEL? A bad O2 sensor can cause symptoms like this.

How did the mechanic determine that those injectors are not getting voltage? If you have access to a stethoscope you can "listen" to the injector. Place the steth on the injector body while car is running and listen for a clicking sound that increases with engine speed.

You can also pull the plugs for examination. Compare the plugs from the affected injector/cylinder to the other ones. It may give some idea what is going on.

Let us know what you find for more troubleshooting tests.

 

[absolute_DSM]

If you have access to a stethoscope you can "listen" to the injector. Place the steth on the injector body while car is running and listen for a clicking sound that increases with engine speed.

You can do the same thing by putting a flathead screwdriver on the injector "softly" and putting your ear to the handle.


Try swapping out your injector resister pack. Its that box with the S shaped white wire coming out of it on the firewall.

 

[luv2rallye]

Injector resistor pack or loose wiring connectors.

 

[stock1g4g63]

Found it, it was a wire....

 

[Leo_99]

Hey stock1g4g63, i know this is an older post but I have the EXACT same issue and I have been at this for days now. What wire was loose? Was it on the Injector resistor pack?