1995 cad dev wont start

Hi nice to meet you. What is th voltage for the batt?.

Hello folks. Bat volts was 11.5v. Will check under dash for fuse. Does sound like ground open or no voltage. working on getting pcm schematic.

You need too verify if you have injector ground pulsation. If you have B+ in the ignition coil and spark. You need 3 things for operation. 1. Coil spark. 2. Fuel 3. Compression in engine.

Got compression, spark plugs firing, pressure on fuel rail. Can't feel or hear injectors firing. Need an Oscope. Pulse is to short to read on digital volt meter. Will try a small amount of starting fluid in the intake next time I visit my brother (his car). If it just hits on 1 cylinder I'll know the injectors aren't firing. Thanks guys. Still look for the scismo on the pcu.

Ok first thanks for give me the oportuniti to help you. You can verify the injector signal with a test light. I prefer one bipolar test light because have more impedance and is more secure for the pcm in this test. Put your test light in B+ and try to start the car meanwhile someone try to start the car you touch with the test light the conector pin of the injectors. You have two pins, one have B+ and the other have pulsating ground. If the car is cranking and you touch with the test light conected in B+ you can see the test light flashing but you need to be fast. You have compression in the engine thats mean the engine is in good shape. You have firing in spark plugs that mean you have one good and working cam sensor because the cams control the firing time. You have a good fuel pressure. Ok you have firing and fuel pressure thats mean maybe the pcm is not the problem because the pcm control the drivers for the coil and the activation of the fuel pump relay maybe MAYBE you have problem with the B+ of the fuel injectors or crank sensor because the cranck sensor control the injectors operation oooor you have the theft system activated, when the theft system is active the pcm don't send the pulsating ground signal for the injectors. The theft system neutralize only the starter motor (GM, Ford, Chrysler) fuel pump (Ford,Chrysler, Asian, European) injectors ( GM, Asian, few Ford).

Well folks I found one problem after getting partial schematics. Open B+ wires feeding pcm. Replaced wire from pcm fuse in engine compartment to 2 battery voltage feed pins on pcu. The schematic shows a direct connection from the fuse to the pins on the pcm but the car wouldn't start until I jumpered the old wire back in at the fuse block still with the adde feeder wires. So this line from the fuse is not a direct connection and there could be hidden fuse some where. Now car starts fine but has fast idle and a/c (which was the orignal problem) still not working. I can jumper across a/c compressor relay and it works. I also jumpered the high and low pressure sensors with no success. A factory wiring diagram would make this so much easier. Searching for a/c control wiring now. I will responde when I get a final fix. Thanks guys!

Ok my car is a 96 cadillac deville. I was attempting to change the blower motor on the firewall. 1, I loosened the two front MOTOR MOUNTS. 2, I UNPLUGGED THE 4 CONNECTORS TO THE COIL PACK. 3, I UNMOUNTED the coil packed and moved it to the side. Leaving the spark plug wires connected to it.4, I THEN MOVED THE MOTOR FORWARD AWAY FROM THE FIREWALL. BY 2" THAT GAVE ME CLEARANCE TO REMOVE THE BLOWER MOTOR. WE ALL KNOW ON THAT BODY STYLE THE BLOWER MOTOR, has to be taken apart in 3 pieces. And put back together the same way. After I replace the blower motor. I then proceeded to put everything back together just like I took it apart. I went to go start the car it turns over it has spark, it has fuel pressure. It has power going to the injectors. But won't crank up unless you spray starter fluid in it. All the fuses are good I tested every last one of them. But I put annoyed light inside one of the injectors plugs and the Noid light did not Flash at all. My car was running fine absolutely perfect. And I don't understand what the hell I did that made it stop running. Any suggestions from anybody. But I was wondering if mine was the same problem that you had with yours. I took it to White Allen Chevrolet in Dayton Ohio they had it for a week and then called me and told me that they can't fix it when I went to go pick the car up they offered to buy it. That doesn't make any sense if you can't fix it why would you want to buy it. So I AAA IT home. Where it sit at this time cranks over has spark no fuses are blown but wont start unless you put starter fluid into the intake area of the car. Help please