'84 302 CFI - no fuel pumps, injectors not firing Reply #15 – December 22, 2009, 07:03:01 PM Quote from: softtouch;303584+1 for what ChuckW says.The ECU has to power-up so it can provide the ground for the fuel pump relay and operate the injectors.There is a small pig-tail wire on the negative battery cable. This is the ground for the ECU computer. Make sure it is connected.The ignition switch picks the ECU power relay. This relay is behind the dash a little to the right of center. The relay has a 5 second delay on its' drop out. When you turn the key off, listen and see if you can hear it drop out 5 seconds after you turn the key off.Subscribing. You all have me interested now. Im all about learning new stuff. Quote Selected
'84 302 CFI - no fuel pumps, injectors not firing Reply #16 – December 22, 2009, 10:31:25 PM Quote from: softtouch;303584The ignition switch picks the ECU power relay. This relay is behind the dash a little to the right of center. The relay has a 5 second delay on its' drop out. When you turn the key off, listen and see if you can hear it drop out 5 seconds after you turn the key off.On mine the ECU relay has been above the ECU on the pass side, WAAAY up under the dash. Has been on both my 83's and 84's. Quote Selected
'84 302 CFI - no fuel pumps, injectors not firing Reply #17 – December 22, 2009, 10:50:27 PM I can't tell you how much I appreciate all your suggestions guys. Unfortunately I'm not going to be able to get to this car again until Christmas day so I won't have an update until then. Sorry to keep you in suspense. To keep you entertained, here's a picture of the car. I'm sure some of you remember it. The engine is now PURPLE[/color]. BLEH. But that's what my sister wanted, so that's what she got. Quote Selected
'84 302 CFI - no fuel pumps, injectors not firing Reply #18 – December 28, 2009, 08:35:25 PM UPDATEThe car is running now, no problem. I want to thank you all for your advice and suggestions.The winner-Quote from: softtouch;303584+1 for what ChuckW says.The ECU has to power-up so it can provide the ground for the fuel pump relay and operate the injectors.There is a small pig-tail wire on the negative battery cable. This is the ground for the ECU computer. Make sure it is connected.The "small pig-tail wire on the negative battery cable" was never disconnected, but somehow the connector itself had gotten so corroded that it was no longer a functional ground for the ECU. I opened the connector, saw how nasty it was, then cleaned and reconnected it and it fired up on the first turn of the crankshaft. Amazing how the simple things can bring a project to a halt. Again, I wanted to thank you guys for your help. Hope you all had a great Christmas and have a Happy New Year-Danny Quote Selected
'84 302 CFI - no fuel pumps, injectors not firing Reply #19 – December 30, 2009, 05:07:11 AM I was gonna say that! I had an issue with the car bucking and stalling. Felt like it was the transmission acting up so I'd pull over and start it back up it would run fine. It was the ground on the battery cable that was loose which caused it to shut off. I was gonna suggest that ground also. Quote Selected