Need more information. When you say fuel pumps, are you talking about a custom fuel system?

BJK

 

agree...need more info

 

i have a 2008 z06 with lots of mods , the fuel gauge reads zero it works sometimes and it doesn't most of the time im really tired of this I've dropped the tanks more than 4 times and almost change everything but no luck at all and when the car is full of fuel it reads just above the half im sure its full but the gauge just show that its not !! I've taken the car to my dealer and they replaced the pass side and that didn't fix anything they didn't want to touch the driver side since it has an external fuel pump however i did the driver side in a local shop and everything looked just fine but still have this problem,,
if anyone has experience with this please help .. i just cleared the codes and the fuel gauge is working again !!
thanks guys

 

I received that stupid P 2068 code and of course the dealer quoted me 2500$. I found a Corvette shop here in Phoenix and was then quoted 1300$. I watched the video with my buddy who has a lift and it took us just minutes beyond 3 hours to button it all back up. It actually was pretty easy. Holding back the crossover pipe and dropping the tank was a 2 man job but other than that he squared it all away. My problem was cleared up however may I suggest that if you drop the tanks to replace the sending unit to do both. Half a tank to full worked great then I realized the main tank unit needed replacing also. Total work was just over 4.5 hours for both.

 

The drivers side cross over is a major headache as I have tried for several hours pulling tugging. It does not help with the driver side exhaust muffler pipe partially in the way since I unbolted and shoved a little over to the passenger side... It is truly a PITA

 

I just put in a racetronix upgraded pump in the drivers tank. When i test the pump with a probe fuel shoots out the crossover tube instead of the main engine line and not the main engine line. Is this normal? Im testing it with the tank on the floor but assembled. Has about 2-3 gallons in it.

 

I just swapped in a Walbro 450 e85 pump. HUGE PITA. I did it on jack stands and I had the trans dropped since I was doing a clutch job also. This was on an 06 Z06. Worst part for me was the plastic hangar. It was so expanded then the bottom Half disconnected from the hangar and was a even bigger pita to pull out of the tank. I got the job done but for most alot of cuss words will be said.

-Curtis

 

I just did a pump replacement this weekend. I installed a 340LPH pump to feed the new forged, blown 418 that I'm patiently waiting on to be completed.

I actually didn't find dropping the tank to be that bad. I've done worse things. I do have a lift, and that helped, but this could be done on some tall jackstands. I laid on my back on a creeper with the car lowered enough that I could easily reach the crossover tube on both sides of the tranny laying on my back (bear hug the trans).

A trick that I figured out to make life easier was as follows:
- Follow the steps in the link above up to the point of snapping the black clip out of the crossover connecter with your hands.

- I made a LONG tool which was basically an 18" long, 3/8 spade bit for wood. I ground off the pointed tip so that it was, in effect, an 18" long, skinny flat screwdriver.

- Take a prybar/whatever and wedge it between the tank and the vertical part of the frame to the inside of the tank. Separate it about 1/2 to 3/4". This will allow you to actually see (with a flashlight) where the twist connector enters the tank.

- My black plastic tab was facing toward the bottom. I then slipped the long bit up into the gap, got it behind the tab, and pried/popped it right out on the 2nd try. The connecter twists easily at this point.

I put a floor jack under the tank, raised/lowered as necessary to get the connecter apart, and dropped the tank right out.

This whole process literally took about an hour.

The absolute worst part of the process was getting that connecter apart ABOVE the flex line. Couldn't get my hand in there. What I did was get my wife (small hands) to reach up in there and snap a fuel line disconnect tool on the line. Those work great with the type of connecter up in there. Then I just pulled it apart.

1 hour and out. 30 minutes back in.

Oh, and mine is an auto, and I didn't drop the trans. I did take the axle-back exhaust off, since I already have the X-pipe out due to the engine being out already.

Hope this helps.

Stacey

 

I'm on my second pump replacement. The first time was a PITA but I thought this time would be easier, practice makes perfect, right? This time the hoses in the crossover stuck to the in-tank hose assembly and broke it. The tab on the crossover internal tubes also broke. I decided to pull the whole crossover tube for an inspection and the hoses are also frozen together on the passenger side. Sigh...now I can't get the passenger side to go back together.

I vowed never to do this job again after the first time and here I sit completely stuck for different reasons.

Why did I lose two pumps in three years and 10k miles? I almost NEVER let the tank run low.

Regardless, thanks again, Motorhead, this thread is critical for this job.

 

did anyone else have a power issue here? I tried to jumper the relay as advised, but nothing would happen. The car was working fine and I am just replacing the pass side sender. I want to know if there is a fuse in addition to the relay? I am not getting power at the pump...wondering if I blew the pump when I tried to jumper it.

 

Yes, there is a 10 amp fuse in the underhood fuse block close to the relay. It should be easy to find based on the labels, I don't have a picture handy...

 

NEED HELP GUYS!!!!

I have been working on this job and fighting it for 3 days now, I replaced my pumps (have a triple hanger, with dual pumps) and i noticed when i pulled the tank when i started there was a good amount of debris in the Driver side tank. Everything is back in and pumps are working, put about 2 total gallons in and started the car, right off the bat im getting 70psi at idle and i can hear the fuel getting transferred over to the Passenger side before starting when ignition was on. After 5mins of running the car dies with 1/4 of a tank left and seems to me that the driver side tank is empty and the passenger side has all the fuel in it. What could be the Issue?? im thinking maybe the Jet Pump in the Passenger side is clogged or not working properly or the secondary fuel pressure regulator in the passenger side tank is messed up??? Am i missing anything, i know at 50psi and above that's when the passenger side tank is suppose to empty out into the driver side tank but its not doing that, any advice would be great!

Thanks in advance,
Cameron

 

OK...question...I am getting ready to do this..gotta drop BOTH tanks and replace the LH pump module and RH level sensor. Why not order new crossover tubes, and just cut the old ones since they tend to break anyway?? GM sells just those as opposed the whole crossover assembly. Would this save a ton of time for $45 in parts?? Or am I missing something?? I have on '08 Base A6...

THANKS IN ADVANCE

 

If you pull them out correctly they won't break. If concern just buy them to have just in case. I did not break mine. Trust me, if you get to the tubes you have reached a happy place.

 

Has anyone been able to do this on an automatic?

 

I did. Do yourself a favor and remove that left side muffler. Will save you time and a lot of trouble. Some people say they did not but I don't see how. I wasted many hours when I could have spent an extra 20-30 minutes.

 

Probably wouldn't hurt, but I'm not sure there's even enough room up there to cut the pipe easily..

I could have had mine out in < 1 hour if it hadn't been for the pipes on the tank side of the crossover tube. The tabs that hold them in the tank broke.. so when I pulled the crossover away from the tank, the pipes in the tank went with it. Thus, couldn't get them to separate. I finally found a piece of steel that I wedged in just right to keep the crossover tube separated from the tank then managed to get the small inner tubes disconnected somehow. It pulled the o-rings out of the pipe in the tank it was so stuck

Anyways. I have scars on my arms from this little endeavor.. I think if I was doing it over again I would have just cut the pipe like you suggested, lol

PS, don't try to use to hold an amplifier in the waterfall area unless you like holes in your fuel tank.. lol. Ask me how I know

 

fuel pump

 

Looking forward to details on your "better way". This is not a fun job to do.

 

If you've got a better way, we're all interested

We all know you don't have to pull the transmission to get the tanks out...