Gu tb45 fuel pump issues.

[msjc38]

I'm a mechanic & this one has got me. Three years ago I moved to darwin from vic. Before I drove to darwin in jan 2011 I went on my last 4x4 session in the hills,cos there's non in darwin. I got as far as 100 km south of coober pedy & my car stopped. It was low 40s outside. I got bak to my car with the tow truck driver & it started. I drove back to town to a workshop to find a broken tree branch squashing a breather line. So I removed it & never had the drama since. Last Sunday ,3 years later we where heading down the Stuart highway to get 50 km north of three ways & it stopped again. Got a tow truck back there to find it started again. We got to tenant creek I couldn't get a pump to we went to Alice springs & no pump there either. We kept going to Glenndambo with no dramas. Then 60 km from burra sa she stopped again. So I took the fuel caps off waited 15 mins & away we went. Now I'm thinking fuel vaporising. But in 15 years of mechanicing & working in the territory I've never seen it in an efi vehicle. We got to mildura it did it 4 times with in 5 km. the first time I put my ear to the fuel filler & I could hear fuel gurgling. It had me wondering obout fuel vaporising. Then it kept doing it. It's defenintly temp related.
Every time it's done it there has been 1/2 a tank or more its done it with 3/4s as well I'm thinking the pump it self doesn't like the intense heat so I'm going to put a new one in it tomorrow
If anyone has experienced this please let me know

Thanks

[yendor]

Possible faulty fuel pump relay??

Have you had the fuel pump out yet and inspected for burnt wires or possibly something blocking the pick up.

[BzR5150]

Have you ever replaced the fuel pump in the time you have owned the car?
Genuine nissan pumps are not great. I had a similar issue. Car would die, get it towed home and it would start and run fine.
I replaced the pump after the second tow after narrowing it down to that. Best thing i have ever done. See my gu had duel fuel before i got it and the previous owner must have never swapped it between the two. So my fuel pump was bad since day one for me. I decided to swap the genuine pump for a walbro intank pump. Its a little louder now outside the car, not noticeable inside.

[offroader-rama]

what was the out come ?????

As I have a 98 gu tb45e auto and not so long ago the engine light would come on occasionally, I checked all the basics couldn't find anything wrong with the car it drove fine until I switched it from lpg to petrol, on lpg does everything as normal on petrol it sometimes goes some times doesn't so I thought easy that would be the fuel pump on its way out for sure.

So I avoided petrol until I got around replacing the pump.

However last night driving home I ran out of lpg flicked it to petrol and it ran fine no flashing engine light i was closer to home than the servo so i drove home no problem, then this morning I got in it to start it and it wont start with engine light flashing.

It'll fire every now and then but wont hold it running so yes i thought fuel pump gone, so after some mucking around i brought a 300lph DW performance universal pump, I fitted it but I still have the same issue fires occasionally but wont run now that the carpet is up i can hear the pump priming when the key is turned. but no running and as I have no lpg in it i cant drive it to get it scanned ? any ideas before the wallet falls over i have a scan tool but only has a a ob11 fitting.
and as its the missus car of cause now its a major drama !!!!

[offroader-rama]

i ve been narrowing it down heaps of pressure at the rail, rules out filter but i have no injector pulse.

so need to work out how to over ride LPG / petrol switch to see if its the gas set up, ecu or could be faulty air flow meter ?

waiting for tow truck to take it to a servo to fill it with lpg then go from there.

[msjc38]

I replaced the fuel pump & never had an issue again. it had a fuel pump just before I got the car. Turns there's a change over period in late 98 when Nissan changed fuel pumps. There was about 5 mm difference between the length of the pumps. Mine had the later pump in an early car. The strainer was sitting to high in the lank. I think causing the pump to over heat.

[offroader-rama]

Turned out it was the key :-/ gee that was a while ago now !! What made you come Back here ?

[msjc38]

I was just looking around on the forum. I havnt looked at it for about 2 years & that post was at the top. I wasn't looking for it.