Date: Sun, 06 Mar 2005 16:03:31 -0500
From: Lou <>
Subject: Help please....'94 NG900s starts and dies

2.3L FI engine 125K miles Following a new battery installation and having the engine die and not restart after driving it approximately 50 miles the car was towed home for further investigation. I ran a compression check to eliminate the possibility of a bad head gasket. I noticed that the #1 spark plug had a wet look to it and the other three did not. Compression was good. The new battery went to 5.5v overnight with NO lights on and the key in the lock position. I disconnected the negative battery cable, charged the battery and reattached the cable. When contact was made to the post I heard a coil or relay at the right rear of the engine energize and a could hear a humming sound. Removed the negative cable and checked current. 1.5A draw. After some experimentation with the ignition OFF, I determined that the #1 fuel injector is turning on when the battery is connected and there was a humming sound from a valve in a bypass hose that runs from above to below the throttle plate. During subsequent checks I found the fuel pump fuse blown. After replacing the fuse I was able to start the engine with it dying after a short run, as if it ran out of fuel. The fuse blew again while testing around the #1 injector and the valve I mentioned above. I had not attempted to start the engine nor was the ignition on. I have been using a pushbutton switch to briefly connect the negative cable and the negative post of the battery. I checked the internal resistence across the injector and it shows 14 ohms as does the #2 injector. I have the rear seat cushion pulled up and do not hear the fuel pump trying to run. Not having a schematic I am at a loss to know where to look next (other than having it towed to a dealer for repair). I also dropped the panel under the dash to get to the relays but again with no schematic I don't know how they are wired. Thanks in advance for any help. _________________________________________ Usenet Zone Free Binaries Usenet Server More than 120,000 groups Unlimited download to open account

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