Fuel injector problems

[ninjadave]

I have a 95 Gst I'm trying to first start. I'm getting fuel delivered to the rail and the injectors, but there not pulsing. I don't see or smell any fuel in the piston chamber. My fuses are all good, all sensors are hooked up. I'm also not getting spark. I tested the ohms on my coil packs and they came out at .99 which is a little over but I should still get spark shouldn't I? How can I test the ohms on my injector connectors and/or what else can I test and check? Thanks

 

[delta448]

Do you have voltage at the injector harness plugs?

When cranking does the other wire pulse to ground?

CEL on?

Do you have a datalogger?

No fuel and no spark usually means either the CAS or CPS signal is not being seen by the ECU.

 

[boost97gst]

Does sound like cas/cps however his pump is turning on. Its not supposed to if the cas/cps signals are not there. Still, its a good place to start testing

 

[ninjadave]

Do you have voltage at the injector harness plugs? When cranking does the other wire pulse to ground? CEL on? Do you have a datalogger? No fuel and no spark usually means either the CAS or CPS signal is not being seen by the ECU.

No there is no CEL light on, and I don't not have a datalogger unfortunately. I used a 9v battery and alligator clips to test my injectors and they clicked so that's a good thing. I'm gonna go test test the connectors from the harness and see what I'm getting from there. But I'll take a look at the CAS and CPS too. Thanks.

So I'm getting the 12 volts to my CAS sensor but nothing from my crank angle sensor connector. So my PCM can't be bad if my CAS shows a reading but not my crank correct? It just doesn't make sense. I followed the wires for the connector in the engine bay and they seem okay so idk what else it could be. The previous owner did a bunch of hacking it seems, I'll see if I can add a pick of these wires.

Also, the service engine soon light doesn't go off when the key is too the "on" position, so does that mean I might have an engine code?

 

[ninjadave]

Anyone have any idea?

 

[Phantom DSM]

Have you tested the crankshaft position sensor? If you have a volt meter,
With the ignition switch on, measure voltage betwen terminal no.3 on the connector and ground, you should see positive power voltage.
Again with ignition switch to on, measue voltage between no.2 and ground, should be 4.8-5.2 volts
Also check for continuity by using the ohm on your meter between no.1 and and ground
{1 2} clip orientation
-{3}

 

[iiNFAMOUSCHRiS]

if the service engine light doesn't turn off, it has some sort of code -- find out what the code is and go from there....

also, grab a ECU pinout and sort through that hackjob wiring you got there, and wrap those wires in electrical tape or heatshrink also, to prevent shorting.

 

[Tyeler18]

I didn't see this posted- do you have rpm on the cluster while cranking?

 

[ninjadave]

Have you tested the crankshaft position sensor? If you have a volt meter, With the ignition switch on, measure voltage betwen terminal no.3 on the connector and ground, you should see positive power voltage. Again with ignition switch to on, measue voltage between no.2 and ground, should be 4.8-5.2 volts Also check for continuity by using the ohm on your meter between no.1 and and ground {1 2} clip orientation -{3}

The sensor itself, no. But my harness connector isn't getting any voltage reading at all, so really that's a problem itself before the sensor correct me if I'm wrong. But that's what I did for the cam sensor and worked fine just not the crank. I'm thinking of asking a buddy to try his ecu and see if that might be the problem.

I didn't see this posted- do you have rpm on the cluster while cranking?

Never really paid attention honestly, I'll make sure to look at that when I do. I don't have my speed sensor hooked up atm if that will make a difference at all.