BBS SPY
Member Since: 20 Apr 2009
Location: Limassol
Posts: 101
|
fuel pump replacement fun on pre 05 MY L322 | |
i recently posted this in another forum, but i thought i might share my recent experiences with diagnosing and changing a fuel pump with you here.
A couple of weeks ago, i go out in the morning, jump in the 4.4 Rangie (the wife's usual transport) to go to work, fire it up and it quickly splutters to a halt, She sometimes does this (the car), especially if you turn the steering.
Restarted, few seconds of splutter and coughing and dies again, now just cranking. Phone a friend (starting to sound like a familiar quiz show) for a lift and come back next day with some diag gear, no fault codes found in EMS or immobilizer. Converse with trusted mechanic mate who agrees with me main suspect is fuel pump. next morning used my own diag gear to force fuel pump to run (any ones can likely do that, but fortunately i have my own) but no matter what i just can't hear jack, and i am sure you normally can. Lift seats and carpet and undo cover plate over tank, run Pump, give top of it a bit of bang and sure enough what sounds like bag of marbles spinning in the fuel (half tank) can be distinctly heard. start the engine and she (always seems to be female) runs for a few mins before engine and marbles both stop. I Phone the dealer for price/ availability of pump, quoted 1000 Euro and enough time to paint the cistene chapel. I Phoned a friend in the parts dept at a UK dealer. quoted 300 GBP (about 333 euro ) and day or two :thumb: .
Several days later i have new pump (monster item about a foot long with combined level sensor arm and float) and set of instructions from GTR. It says special tool needed to remove locking ring which i could have waited to borrow but in the end i gave it a go without and it turns out that a well aimed / angled screwdriver to biff the ring round was easily sufficient.
Started Saturday AM by disconnecting battery, always a good start, but according to instructions, it must in this case be done with Key out else some memory of position of fuel sender issue arises. I skipped on the drain tank part of instructions.
Next assumed yoga like access position and tried to figure out how to unclip 2 right angle fuel pipe connections, colour coded pipes make it easy to not forget which will go back where. Instructions not much help, just say "unclip" but Red locking ring needs lifting up while connector pushed down and then both lifted off. Bit tricky but they did eventually "unclip" Wiring connector comes of easily, slide to lock mech type.
Biff locking ring round working alternate angles till loose enough to spin by hand and remove. I hope i do not need to comment that i was not smoking :naughty:
Pulled unit up to "remove" as per instructions but after about 6 inches stopped by instruction ommited pair of pipes going into the side of the unit on what looked like a wiring multi plug.
Tried all angles in attempt to comply with instructions before throwing them away and noting i would have to detail things more accurately for members of RR.net
Inspected new unit to find release mechanism for these pipes, noted new unit had o ring on pipe one but not on identical partner. Realizing that once pipes were released and it could easily become more of a fishing weekend, i looped some string around one of the pipes first and handed them to my assistant (wife) before flexing open the release spring barb and easing the pipes connector block out. Interestingly there are also 2 wires connected via same block.
Only a little twisting more and the whole unit came out. You have to keep it upright as some fuel stays in it, but it was easy enough to keep upright and de yoga with it until outside the car without any spillage.
I had bought a new seal (GBP 7.00 ish) and unwrapped it but when figuring orientation i saw it had a huge split in it
Re used the old one with a clean and lube, which to be fair seemed fine anyway. Noted the old unit only had one o ring on same side stub and was sure i had not dropped one so felt better about it.
re assumed yoga position and carefully Inserted the new unit, and with some fiddling with pointy pliers managed to get the pipe block to slide on and latch.
pushed the unit down the rest of the way noting the rotational orientation dog, but it seemed to bottom out about 2 inches too early like something was under it.
From memory i knew this was yet another omitted from the instructions aspect and try as i might, no amount of twisting turning or angling helped.
After several minutes and some helpfully intentioned input from the assistant, Is it the right one, has the tank shrunk, did something fall in, perhaps the fuel is in the way, i reached the familiar "try applying brute force" stage when i discovered that the top plate is actually spring loaded up. Ah so that's what the legs and springs part is all about.
Fortunately, i had not reached the "why don't you shut up and go and make me a coffee" stage with my assistant and between us we managed to hold the down and get the locking ring on enough to hold it and be biffed round tight. :dance: I could now see the light at the end of the tunnel and for once it was not someone carrying a torch walking toward me.
I had made a mental note about which colour of pipe went where, However in reality, after the event, it proved to be a faint detail, and i wished i had took a picture or wrote something down, but with a 50/50 chance, faint was good enough.
I plugged it up, de yogered, played the thought you had the key game with my assistant, before looking in my own pocket and started the car. Started as usual, coughed a second and then resumed to run fine.
Re yogered for a minute to listen to the tank / pump and instead of marbles heard a satisfactory remington lady shave like buzz.
Put cover on, carpets back etc gave it a spin round the block before smugly throwing keys to assistant, now wife once more. :clap:
I have since had it pointed out on mentioned other forum that i should have used non possibility of spark inducing item (AKA screw driver) to biff ring round with and that i should have taken pictures etc to which i responded
Yea, of course i should have took pictures, i know that now, and i do thank you for pointing that out, however as i have a wife / assistant, i am obviously not going to be short of someone to tell me things that start with words like "you should have" and "I could have told you".
And yes, you are quite right that i should have considered something better than a large screw driver from the sparks point of view, although it was big and i biffed gently, so not too much damage risk.
However, i am sure if i ended up with singed eye brows besides a burning L322, that i would have certainly got the double whammy of "I could have told you that you should have used something that would not spark".
Seriously though, i don't know what i would do without her, have to take the car to the car wash myself i guess
Dunno about you, but i always find adding "sense of humour" to any list of requirements for all such jobs is a must
hope you enjoyed reading as much as i enjoyed writing
warmest regards to all 2003 4.4 HSE
|