| Author |
Message |
Herbert Edward Gault (Irfgt)
| | Posted on Monday, July 02, 2001 - 9:49 pm: | |
Not exactly correct. The pump runs all the time that the engine is running or starting. The accumulator is a sort of muffler for the fuel in that it evens out the fuel pressure and quiets the delivery.It sounds like your pump is locked up since it will not run when you jump it. The fuel pump relay is the one in the lower left side of the relay center and the fuel pump start relay is in the lower right side behind the panel that falls off. I highly recommend you replace both of them and keep spares. Also these relays are not interchangeable. They are different part numbers. Always double check the numbers on the old relay with the new. |
Scott Anderson (Srandrsn)
| | Posted on Monday, July 02, 2001 - 9:23 pm: | |
THANK YOU GUYS FOR SOME GOOD TIPS. I am not new to specialty/collector cars but I am new to Ferrari so finding the fuel pump really helped out. Here is where I am at. Firstly there was no power coming to the pump. Secondly when I rigged up a wire directly from the fuse panel to the pump it wouldn't run; just clicked a little. Now I noticed that on the fuse panel the fuel pump slot (along with a few other systems, clock...) was always hot, I assume this is normal. Therefore there must be a switch/relay between the fuse panel and the pump which I need to find and get power to the pump - any suggestions where it is? Or could I use a shortcut and jump off another power source that is activated by the key?
Correct me if I am wrong but the fuel pump will run until it builds up the pressure (in the accumulator/fuel system) and then shut off, leaving the system to run on the pressure its created?
What I think happened was there was enough pressure in the accumulator to start and run the car, and when I slowed down it didn't pick up fuel for a second but there was still enough pressure in the system so that when the fuel sloshed back on the pick-up it got sucked back into the system. And finally when I was real low on gas there wasn't enough gas to pick up & I lost pressure in the system, and with a fuel pump that wasn't working it couldn't re-pressurise. Does this seem pluasible? Anyway I think that once I install a new pump and get power to it things should be okay (famous last words). |
Andrew Rackham (Andyrackham)
| | Posted on Monday, July 02, 2001 - 3:13 pm: | |
Scott, I'm new too, but I'm here for something that may be similar. Can you clarify if 80 GTS means 3.2 or 3.4 litre.
Have you checked if the fuel pump is running - in the fusebox (front LHS) there are two fuel relays. On the extreme right (view from driver seat) there is a main plug set vertically (about 12 connections), which carries the fuelpump wires (brown I think) - 3rd and 4th from bottom. Check these connectors for burning and loss of contact.
If I have a wrong model sorry to waste time, but if right it is a quick check. |
ctk (Ctk)
| | Posted on Monday, July 02, 2001 - 9:46 am: | |
Have you checked the filter located inside the primary fuel tank? If it is blocked you get mysterious fuel cut-off situations that will send you checking for fuel and ignition faults. If this filter is blocked it also overheats your fuel pump which cannot draw fuel. Replace this tank filter (wire mesh), flush out your pump, check it's amperage and change the fuel filter while you are at it. By the way, the fuel pump is a Mercedes part which available from Bosch. |
Low Kai Chin (Speeddemon)
| | Posted on Monday, July 02, 2001 - 6:25 am: | |
If there is fuel up to the fuel distributor (the thing with metal pipes to the injectors), the pump may not be dead. Try checking your fuel distribution system instead. |
Herbert Edward Gault (Irfgt)
| | Posted on Monday, July 02, 2001 - 5:49 am: | |
Your fuel pump is located at the base of the left fuel tank on the frame and the hose from the left tank goes directly into it. The similar looking thing beside it is the accumulator. |
Scott Anderson (Srandrsn)
| | Posted on Sunday, July 01, 2001 - 9:57 pm: | |
I will try to make this as short& simple as possible. I bought my first ferrari earlier this year, an 80 GTS. The car ran fine on the test drive but the interior was shot so when I brought it home I parked it in the garage and went to work. When I got to the point when it was drivable I took her out for a run. The car had been sitting for about 3 years but still seemed to run just fine, until I slow down to turn around or came to a stop sign and she stalled, but both times it started right up again without a hitch. The car was extremely low on gas so I assumed it was just a simple pick-up problem. I had no problems getting back to the garage and was able to finish the interior work. So now its ready to go and I warm it up pull out of the garage and stall at the first stop sign I encounter, but this time it doesn't start right back up again and still doesn't.
Its getting spark because it fires right up if you spray starting fluid into the plenum. I noticed that the fuel pressure regulator is connected to/part of the vacuum system (correct?) could I have compromised the vacuum pressure? I bought an aftermarket (universal) electric fuel pump for fuel injected cars and was going to try and hook it up but with all those vapor return lines and canisters all over the place it doesn't look so easy now. Is an aftermarket pump possible to hook up? Can I simplify all those fuel and vapor return lines? I know there is fuel up to the point where the rubber line connects to the hard (steel) line prior to that thing by the air cleaner with all the separate lines for the injectors. But after that thing I cant see where I might try and use my vacuum pump to try and pull fuel farther into the system. As a matter of fact I really couldn't find anything that I thought was the fuel pump, I can't hear it when I turn the key. Anyway I tried to make that as clear as possible and would really appreciate some help, the driving season up here in wisconsin is only so long. Thanks |