2003 volvo penta 5.0gl d stalls after sitting

[OLYS 379X]

When starting cold no problems . After warm up ... Switching skiers or tube riders no problem ... After sitting on shore or sitting in the middle of the lake for 1/2 hour.... Starts right up but after about 50 - 100 yards it stalls just like it runs out of gas...it takes a bit of cranking the engine over but will usually start up and run fine again untill we stop for another break...never a problem if the engine is cold..ie starting the day. Things i have tried .. While sitting... Lid to engine compartment open....gas cap open...no help... Had a mechanic suggest that it may be a faulty oil pressure sender.....sending no signal to fuel pump so after using up fuel in line engine stalls.....i am told there are 2 oil senders on this engine ..one on top of the engine by the destributer....and another down by the oil filter....any idea which one to replace or any other ideas ... Thanks in advance

[Don S]

Had a mechanic suggest that it may be a faulty oil pressure sender

That might happen with a Mercruiser, but not with a Volvo, they don't use an oil pressure switch to control the pump.

Might check the fuel pump relay (next to pump) and look for corrosion on the terminals.

Here is how the electric fuel pumps work on Volvo engines. http://forums.iboats.com/showthread....=1#post3761225

[OLYS 379X]

So you think that circit relay may just quit for a short while.....as after trying to start for awhile engine will start and run perfect till the next time we stop for a break...

[Don S]

It could be any number of things, here's just one possibility. Next time it doesn't start, tap on the fuel pump relay a couple times and see if it works.
Might also make a jumper wire and go between the 30 and 87 socket terminals and see if it starts. With it jumped, the pump will run all the time.

[OLYS 379X]

Ok thanks.......checked relay and the terminals are not corroded and are a good as new any chance anyone knows where i could find a wiring schematic of this engine ?

[Don S]

See if this will help.

5gld.pdf

[OLYS 379X]

Thanks for your help i appreciate it...... If you have any other ideas a can try let me know .. Just seems to me it is something that is turning the fuel pump off when we restart the engine...but which sensor is doing so...that is the question !

[Don S]

There are no sensors that stop the fuel pump or let it run. There are diodes in the fuel pump electrical system, but diodes either work or they don't, they are not intermittent.

If not electrical, you have a fuel problem. plugged passages, air leaks in the suction side of the fuel system, water, hard to say.

[MNBrent]

I know the older fuel injected V8 GM vehicles use to use an oil pressure activated switch on the back of the intake manifold, by the distributor, to close an electrical contact in the switch to send 12V to the fuel pump, after the fuel pump relay timed out a few seconds after starting the car. Newer FI set-ups don't use this finicky scheme any longer. Get the VP manual and trace your fuel pump power source and ground source and see where it drops off. Boats can be a PITA to work on due to limited access. Be prepared to rip your rear bench seat out to get to the pump area.

Also check your distributor internals for corrosion. Could be bad spark too causing this.

[OLYS 379X]

By the pictures you sent me there are only 3 sensor s that could be not working properly..exhaust overheat sensor....oil pressure switch and temperature switch they are all hooked together and go to the distributor.maybe one is weak and while the boat is sitting gets to warm.. And shuts the engine down ?

[Don S]

By the pictures you sent me there are only 3 sensor s that could be not working properly..exhaust overheat sensor....oil pressure switch and temperature switch they are all hooked together and go to the distributor.maybe one is weak and while the boat is sitting gets to warm.. And shuts the engine down ?

They don't go to the distributor, they go to the alarm buzzer on the dash. They can not and do not affect the engine operation in any way. If one of them closes, the buzzer goes off, but the engine will keep right on running as if nothing happened.

[OLYS 379X]

Went back and looked at the pic you sent me and those sensors go to the 10 pin connector...and those t/sb labled sensors will just send to the buzzer on the dash !!! Temperature sender "21" also goes to that 10 pin connector could it stop the engine ?

[Don S]

There are no alarm switches, gauge senders, or sensors of any kind that will kill your engine.
You have either an ignition problem or a fuel related problem.

[OLYS 379X]

Thanks for your help ..... Will have to see if that fuel relay is faulty i guess ..as it only happens at that certain time when sitting after operating....then works perfect again....hard to troubleshoot

[2003lsr]

I used the jumper wire between 30 and 87 socket terminals last year when I had a "stall after sitting" problem. Worked like a charm on my 2003 4.3GL-C! Won't leave the dock without a jumper wire now!

[OLYS 379X]

thanks for the tip......did you replace that relay and did it fix the problem? hope to do some more checking this weekend thanks for all the help guys !!!!!

[2003lsr]

Never did replace the relay. I'm gonna carry an extra one on the boat though.

[tmschuck]

When starting cold no problems . After warm up ... Switching skiers or tube riders no problem ... After sitting on shore or sitting in the middle of the lake for 1/2 hour.... Starts right up but after about 50 - 100 yards it stalls just like it runs out of gas...it takes a bit of cranking the engine over but will usually start up and run fine again untill we stop for another break...never a problem if the engine is cold..ie starting the day. Things i have tried .. While sitting... Lid to engine compartment open....gas cap open...no help... Had a mechanic suggest that it may be a faulty oil pressure sender.....sending no signal to fuel pump so after using up fuel in line engine stalls.....i am told there are 2 oil senders on this engine ..one on top of the engine by the destributer....and another down by the oil filter....any idea which one to replace or any other ideas ... Thanks in advance

I'm hoping you can bless me with the answer to your problem. Did you ever figure it out? I've been struggeling with this issue for my last 6-7 trips and it's a little frustrating. Any help you can give would be great.

Thanks

[OLYS 379X]

ok i was lucky enought to get out on the water .....with some ideas to try from this post .....i ran the engine with all sensors hooked up and warmed it up and everything was working properly......... i unhooked the oil pressure sensor # 19 back of the intake manifold.....oilpressure guage was not working after i unhooked it.....ran the engine and stopped twice for a period of time that would usually cause the problems ... started engine after and i did not stall out ! i am going to buy a new sensor and hope that was the problem..... will keep you posted ....may not be till early july

[skydiveD30571]

i unhooked the oil pressure sensor # 19 back of the intake manifold.....oilpressure guage was not working after i unhooked it.....ran the engine and stopped twice for a period of time that would usually cause the problems ... started engine after and i did not stall out ! i am going to buy a new sensor and hope that was the problem..... will keep you posted ....may not be till early july

Don mentioned several times in this thread alone that these sensors do not affect the performance of your engine in any way. They only send a signal to the gauge for your reference. Your problem is not in the oil pressure sender.

[OLYS 379X]

thought i would try unhooking that sensor that mn brent had posted about ....... and my engine did not stall like it did before...it didnt stall !!!! that is all i can say....will be using it more the first 2 weeks of july .... i will change that sensor before then.... and give you an update thanks again for all the reply's

[Boatsrfun]

thought i would try unhooking that sensor that mn brent had posted about ....... and my engine did not stall like it did before...it didnt stall !!!! that is all i can say....will be using it more the first 2 weeks of july .... i will change that sensor before then.... and give you an update thanks again for all the reply's

I am having the exact same problem with a 2003 Volvo Penta gl/sx. It's a strange thing when the engine cuts out, and like you say, it does not happen when the engine is cold, rather after running it. I hope you post your findings soon, as I would like to know whether to proceed if it indeed is the sensor. Any other thoughts would be helpful.

[Don S]

I am having the exact same problem

Any other thoughts would be helpful.

Welcome to the forums boatsrfun, You need to start a new thread of your own, this thread belongs to OLYS 379X and his problem.

[asievers]

I am currently having this same issue and have been for a couple years now. It has been intermittent. I thought it was a fuel filter issue as I had a bad gas cap gasket, and my dealer replaced the fuel filter and it ran fine for a year. Then a year later again, replaced the fuel filter and then 1 year later again. So now I carry an extra fuel filter, top it off with gas and bang starts right up. Then this year twice in 2 weeks, only this time I just took the fuel filter off and toped it off, after i noticed it was down to 1/2 full of gas. Bang started right up so I'm thinking it might be the Fuel Pump, when it gets hot it is sticking after sitting for a while. My dealer told me to not use 87 Octane gas so I filled it up with premium 92 Octane and threw in a can of sea foam fuel cleaner. It's running great but still haven't tested it out yet as we had a short day. I'll get back with an update in a couple weeks. My guess is it's the fuel pump, getting old, it's a 2003 Volvo 4300 GL. No fuel injection.

[dypcdiver]

If the filter is only half full, you need to find where the air is getting into the system.