328 Fuel Pump

My 87 328 wouldn't start today. Got spark and engine will kick on starting fluid. Don't hear the fuel pump run when turning on the key. Fuse is good, relay clicks(haven't tested with meter yet). Tried taping on fuel pump. Anyone no any good tips to try? Should the pump run for a few seconds when you turn the key? Does the pump turn off when it reaches pressure or does it stay on with key?

 

Thanks, I didn't get a chance to check anything till tonight. I didn't unplug the connector but opened up the aircleaner and pushed down on the diaphram. I could hear relay click but no 12 volts on the fuel pump. I read somewhere that it did the same thing as unplugging the conector. I didn't have the car up in the air so I was working by feel from the drivers side of the car. If I was on the right item it had one electrical connection under a ruber boot with a large line that felt like it was coming from the left side fuel tank. I also tried switching the fuel pump start relay with an identical one from the panel. I couldn't see what I was doing under there, is there only one wire going to the pump? I will try to get the car on the lift tommorow so I can see what I'm doing. Thanks again.

 

Does anyone know if the fuel pump from the 87 328 was used in any other non 4RE cars? I have a feeling it is the fuel pump that crapped out and I had my DVM on the wrong terminal. I only could feel one terminal and aparently there are two so there very may be 12v going to the pump. I'll check the volts again when I get the car in the air so I can see what I'm doing.

 

Ok, Did everything mentioned in this thread and still no juice at the fuel pump. Got some additional tips from this thread( very good) http://www.ferrarichat.com/forum/showthread.php?t=73463&highlight=fuel+pump+328&page=2 I removed relay "U" and jumpered 87 to 30 and still nothing at the pump. Went to Ferrari.jenkins.org and looked at the wiring diagrams online. Found I had 12v on connector "W" which is a vertical conector on the left side of the fuse panel and probed the 4th one down(biege) and had 12v there with relay "U" jumpered. Looked for the next connector in the wiring diagram which was connector 144 located behind the panel in the passenger footwell. It is one of the two attached to the car not the back of the panel. As soon as I tried to push my meter probe into the beige wire in the lower left the pump started to run. Figured I'd document my journey and pay it forward for the next guy in honor of those who posted the tips that got me started in the right direction. Also found my clutch cable is starting to fray while I was under there. Thanks again for the help. I can post some pics of connectors if anyone thinks its worth the trouble.

Was almost ready to offer free beer to anyone willing to drive to Rockville to help trace spaghetti with me when I found juice at connector "W" and none at the pump.

 

Was around midnight when I found the bad connection so I just closed up the shop and went to bed thinking the fix should be pretty easy compared to the diagnosis. Was planning on doing all the above before putting back together. A friend sugested checking the current draw from the pump and said this is sometimes caused by high current draw. Not sure what the draw should be? I guess I could contact Bosch?

 

Here are pics of the connectors and locations. Notice the discolored connector(144). Measured Amp draw on pump and got a little over 7 amps. I imagine this is a common problem. Not sure what the best fix is. I cleaned the contact as best I could and put a tiny bit of grease on it before putting it back together. Can you buy new contacts? I used a small jewelers screwdriver to get the contact out of the connector, I'm guessing there is a better tool.
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Just posting something here to keep this thread current in case they decide to delete some old stuff.

 

bump!

 

Bump