2002 VP 5.0 GL (Red) Fuel Pump Issue?

[wolfpack94]

I tried to do my spring startup yesterday with no luck. It would turn over great but not fire. I took the float bowl off of the carb to make sure fuel was too the carb, but the bowl was bone dry. I used non-ethanol gas and stabil when I layed up late fall, so fuel condition should be fine.

After digging around I noticed that the connector from the fuel pump was loose. It will actually wiggle and lift off of the pump itself. It is the little black connection that has a crescent shape built in that fits around the brass neck of the fuel pump. In the pic it is the part I have the arrow pointing to. When it comes out it has two female prongs that look like they would fit over a male stob. Did something break loose, or do those prongs fit down in there and just have a loose connection?

I haven't messed with the pump before, but wonder if I may have jarred something loose and broke it when I pulled the water hoses last fall to drain the block when winterizing?

Thanks for any insight.

https://www.dropbox.com/home?preview=tempFileForShare_2016-03-09-09-40-39.jpg

 

[Bondo]

Ayuh,.... Welcome Aboard,.... Yer picture seems to be password protected,....

 

[wolfpack94]

Hopefully this works, and thank you!

 

[bruceb58]

You press on the wire to remove the connector. The connector should click into place when pushed onto the pump.

Pull the relay out and jumper the relay socket 87 to 3 0to see if the pump turns on. This is from an older manual but should be the same as yours.

 

[wolfpack94]

Bruce, thank you for the diagram. The part I am wondering about isn't the harness with the yellow and black wire, but the L shape part that plugs into on the pump. That part is currenlty loose in the pump and can be wiggled out with the harness still attached to it.

 

[bruceb58]

OK...I understand what you are saying. Next time I get up in my boat, I will take a look at mine.

 

[Fun Times]

I've seen that part of the pump pull off before. As I recall, I put it back together the best I could and the pump seemed to work for me okay...I don't recall having to replace the pump afterwards on that pump model. Of course be sure to test the heck out of the 12v power system before heading out on the water...Wiggle the wires, etc. while watching a multimeter.

 

[bruceb58]

Of course be sure to test the heck out of the 12v power system before heading out on the water...Wiggle the wires, etc. while watching a multimeter.

Jumper the relay socket as shown above and wiggle that thing.

If I were you, I might consider buying a replacement but I take my boat many miles offshore.

 

[wolfpack94]

Ok. So I went to the boat after work and was able to get the sockets of the connector to pop back on the pump. Tried to start the boat but no dice. Still no fuel being picked up. So, I took the pump/filter assembly off and brought it home with me. I hooked tested the pump with 12v from my lawnmower battery and the pump reacted and I could feel it running.

Based on above, I figure it could be something to do with the relay, something to do with the relay or some blockage at the fuel tank pickup. I guess I could run the fuel line to the carb into a bottle and jumper the pump straight off the boat battery to see if it pulls any fuel?

I know this sounds crazy as I filled the boat up with non-ethanol fuel prior to winterizing and the fuel gauge is showing over 3/4 full, but I am wondering if somehow someone siphoned the gas out of the tank at the boat storage yard. I really doubt this, but at the same time I tried to shake the boat tonight with the fuel cap off and listened for sloshing, but didn't really hear anything. I guess I could take 5-10 gallons in cans and pour it in to see.

Any chance the pump is bad even though I could feel it activate jumpered right off a battery when off the boat?

 

[bruceb58]

The pump should turn on while you are cranking or the engine is running.

First thing you can try is jumpering the relay socket like I showed above and see if your engine runs.

If it does, replace the relay and measure the voltage at the pump while you are cranking to see if the pump is turning on.

 

[wolfpack94]

Got it. Will try this tomorrow. Thank you.

 

[wolfpack94]

Went by the boat this morning. I put the original fuel pump back on. I did test voltage at pump connector downstream of relay while cranking over and got no voltage. I then unhooked the connector at the pump and straight wired the pump to the battery and got fuel to a jug. I hooked back up to carb and it filled carb bowl this way, so now I know I can get fuel to the carb. I did buy a new relay last night via the web, so I am waiting on it to arrive. By chance does anyone know if that is a common relay that you can buy at an autoparts store, or does it have to be a VP or Sierra part?

I will try to jumper the relay socket this afternoon. Ran out of time before work.

Good news is no one stole my gas

 

[bruceb58]

It's a standard auto relay...nothing special.

Check the voltage at pin30. You should have voltage at that pin always. If you don't, you need to check the breaker that feeds it.

Check the voltage at pin 85 of the socket while you crank.

 

[wolfpack94]

So, I checked the voltage with battery on at the 30 terminal of the relay socket. No voltage at all. I see where there may be a fuse under the plastic cover and the engine breaker that is attached to the starboard exhaust manifold. Is it possible the problem could lie here? Is there an easy way to access under the cover?

 

[Fun Times]

Yes it could be the fuse.
The front cover item 5, can be slightly removed by carefully pulling/prying out the 4 locking pins at the front...Item # 6, http://www.volvopentastore.com/Fuse...*****.287089351--store_id.366--view_id.790281 It's not really the easiest cover to remove though so take your time with it.

If you don't have that style cover then there is this style too depending on the exact engine model letters you have after GL-?, http://www.volvopentastore.com/Fuse...*****.287089351--store_id.366--view_id.790282

 

[bruceb58]

It should be a 6A circuit breaker.

You have any 6A breakers on that panel on your starboard riser?

 

[wolfpack94]

It was the fuse. I feel like a big dummy. After pulling the cover off I saw the fuse holder that says "FUEL PUMP".......lol. It had a a blown 7.5 amp fuse. I imagine this was the original fuse since there was still a spare in the spare holder next to it. Did not know there would be a spare, so I picked up a pack on my way so I have a few extra now.:joyous: I checked the voltage at the 30 pin on the relay socket after changing the fuse and I had 14 volts, so that made me happy!

Just from you with more experience, what are the chances that fuse would blow between winter layup and the try for first start of spring? Just dumb luck? Eventhough it was something very simple (and hopefully not blown because of another underlying problem) I feel I learned everything I could about the fuel system on my craft. Chalk it up to learning something new........I always like adding to my knowledge base. Thanks everyone for the advice as this is a great resource!

 

[bruceb58]

Well...there is a reason that fuse blew. That's your issue right now. You should probably be able to start your engine now and maybe start wiggling things around to make sure it doesn't blow again. Top of the pump where the electrical connector is the first place I would be wiggling. The pump will have to be running either with the jumper or with the engine actually running.

 

[wolfpack94]

I will go to start on muffs today to see if I can get it to blow again. I am hoping it just blew when I tried to start it the first time a few days ago and didn't realize the connector at the fuel pump itself was loose. As of now, I have the new fuse in, tight connections and a new relay in just in case.

I will report back later after I try this evening.

 

[wolfpack94]

All seems to be ok for now. Started up on muffs in the driveway this morning and let it run for 20-25 minutes. Jiggled some stuff and nothing went wrong. Thanks all for the help!