another fuel pump!!!! WTH!!?
Former Vendor
Joined: Sep 2010
Posts: 682
Likes: 11
From: Anderson Indiana
The C6 Z06 pump and the Walbro 400 must not be exactly the same. I killed a Walbro 400 in just 100 gallons of E85. I disassembled the pump and took pictures of the damage. The brushes were completely worn out as well as the armature. Everything else inside the pump looked fine.
I just installed a new Walbro 450 E85 pump last night. Hopefully it lasts longer than the 400 lol.
I just installed a new Walbro 450 E85 pump last night. Hopefully it lasts longer than the 400 lol.
Last edited by Jeremy@RPMTransmissions; May 23, 2012 at 02:17 PM.
Racer
Joined: Nov 2006
Posts: 282
Likes: 1
Buddy, I wish you get this figured out very soon. Check the wiring. At least do some tracking to make sure everything is fine.
Please update us with the progress. I have a feeling that you will be able to track it this Friday
Please update us with the progress. I have a feeling that you will be able to track it this Friday
Melting Slicks
Joined: Jan 2009
Posts: 2,420
Likes: 6
From: Miami FL
My 4th or 5th fuel pump just went out on me today. This one have even less miles than the previous one. Probably around 400miles!!!!
There must be something causing those fuel pumps to go out but can't figure it out. None of the wires or anything else got changed. All stock. All we did this time is -8an feed line, and reused the stock feed line as a return line.
Is it just luck? E85? Or is it possible that something else is causing those pumps to go out on me!!!!?
I am getting frustrated. I didn't have a lot of fun in this car ever since I got it rebuilt. It spends most of its time at the shop.
A wise man told me not too long ago to get some 5gal fuel and set this thing on fire but I didn't listen to him LOL
Any ideas? Since it will need a new pump might as well get the walbro 450 pump
this is on my C6 Z06. 441ci N/A with nitrous. I have a dedicated fuel cell for the nitrous
There must be something causing those fuel pumps to go out but can't figure it out. None of the wires or anything else got changed. All stock. All we did this time is -8an feed line, and reused the stock feed line as a return line.
Is it just luck? E85? Or is it possible that something else is causing those pumps to go out on me!!!!?
I am getting frustrated. I didn't have a lot of fun in this car ever since I got it rebuilt. It spends most of its time at the shop.
A wise man told me not too long ago to get some 5gal fuel and set this thing on fire but I didn't listen to him LOL
Any ideas? Since it will need a new pump might as well get the walbro 450 pump
this is on my C6 Z06. 441ci N/A with nitrous. I have a dedicated fuel cell for the nitrous
If you been getting the E85 in the same gas station they might have water in the tank and killing your pump. Change gas station.
This happen to my truck and have gone through two pumps on e85. The dealer told me to change gas station. I also bought a e85 tester on eBay for $7.
Hope that helps.
Former Vendor
Joined: Jun 2007
Posts: 655
Likes: 5
From: Daleville Indiana
I've got 10,000 of strait E85 in my car, stock fuel pump with 60lb injecotors.
Ive driven it to New Jersey and back twice... been all over everywhere, not a single hiccup of an issue.
Jeremy here at work bought a 400 and switched to E85 and the pump failed within 2 weeks. He just ordered the 450 pump which is E85 rated and installed it.
Ive driven it to New Jersey and back twice... been all over everywhere, not a single hiccup of an issue.
Jeremy here at work bought a 400 and switched to E85 and the pump failed within 2 weeks. He just ordered the 450 pump which is E85 rated and installed it.
Former Vendor
Joined: Sep 2010
Posts: 682
Likes: 11
From: Anderson Indiana
Yes it is safe to say that the Walbro 400 is not E85 compatible. They stressed that it isn't safe for E85. The Walbro 450 is safe for E85.
Drifting
Joined: Jul 2010
Posts: 1,888
Likes: 82
From: 405
Former Vendor
Joined: Sep 2010
Posts: 682
Likes: 11
From: Anderson Indiana
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Thread Starter
Safety Car
Joined: Oct 2008
Posts: 3,966
Likes: 17
From: Ft. Collins, CO
Out of curiosity, have you bench tested any of these failed pumps after removal? What's the symptom when they fail? Most oem fuel pump failures I see are because the pumps seize (or fail internally) and won't make any noise.
I'm just wondering if you have some intermittent wiring problem that makes you think your pumps keep failing. Bench testing should answer that, though.
Gotta be frustrating...
I'm just wondering if you have some intermittent wiring problem that makes you think your pumps keep failing. Bench testing should answer that, though.
Gotta be frustrating...
all of the ones that failed on me stopped making any noise and thats how I know its the fuel pump. my fuel pressure gauge when I turn the car doesn't move and the car wont start. I checked the relay and the fuse and both are ok so it has to be the fuel pump.
I replaced the pump and car works fine for couple months and then again same problem. I had over 40k miles on my first pump and everything was fine until I switched to E85. a month or two after switching to E85 the pump failed on me.
we will test this pump and check the internals and see what might be causing the problem.......
Last edited by walhan_qtr; May 23, 2012 at 04:13 PM.
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 3,966
Likes: 17
From: Ft. Collins, CO
The C6 Z06 pump and the Walbro 400 must not be exactly the same. I killed a Walbro 400 in just 100 gallons of E85. I disassembled the pump and took pictures of the damage. The brushes were completely worn out as well as the armature. Everything else inside the pump looked fine.
I just installed a new Walbro 450 E85 pump last night. Hopefully it lasts longer than the 400 lol.
I just installed a new Walbro 450 E85 pump last night. Hopefully it lasts longer than the 400 lol.
I am only asking because I had the same problem with the Z06 pump and not just one.
I too just ordered the walbro 450LPH and I should get it Thursday. I too hope it will last longer than 400miles LOL
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 3,966
Likes: 17
From: Ft. Collins, CO
I would have put a IED under that b!t@h
If you been getting the E85 in the same gas station they might have water in the tank and killing your pump. Change gas station.
This happen to my truck and have gone through two pumps on e85. The dealer told me to change gas station. I also bought a e85 tester on eBay for $7.
Hope that helps.
If you been getting the E85 in the same gas station they might have water in the tank and killing your pump. Change gas station.
This happen to my truck and have gone through two pumps on e85. The dealer told me to change gas station. I also bought a e85 tester on eBay for $7.
Hope that helps.
I get my fuel usually from the same station and its the best here in town. I have tested it and its always true E85. My friends are using the same station for over 5 years now on STis,Evos, and Supras and not a single problem with them. so I know its not that station... or I hope not as its only across the street from where I live. the other one is 10miles away (20 back and forth) lol
Last edited by walhan_qtr; May 23, 2012 at 04:38 PM.
Former Vendor
Joined: Sep 2010
Posts: 682
Likes: 11
From: Anderson Indiana
I am glad you posted this Jeremy. what pump did you have before the 400?? was it a Z06 pump? did that one fail on you??? or what was the reason you switched to the 400?
I am only asking because I had the same problem with the Z06 pump and not just one.
I too just ordered the walbro 450LPH and I should get it Thursday. I too hope it will last longer than 400miles LOL
I am only asking because I had the same problem with the Z06 pump and not just one.
I too just ordered the walbro 450LPH and I should get it Thursday. I too hope it will last longer than 400miles LOL
I know quite a few people that had been running E85 through their 255s with no problems so I assumed that the 400 would be the same way. I was wrong...
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 3,966
Likes: 17
From: Ft. Collins, CO
I've got 10,000 of strait E85 in my car, stock fuel pump with 60lb injecotors.
Ive driven it to New Jersey and back twice... been all over everywhere, not a single hiccup of an issue.
Jeremy here at work bought a 400 and switched to E85 and the pump failed within 2 weeks. He just ordered the 450 pump which is E85 rated and installed it.
Ive driven it to New Jersey and back twice... been all over everywhere, not a single hiccup of an issue.
Jeremy here at work bought a 400 and switched to E85 and the pump failed within 2 weeks. He just ordered the 450 pump which is E85 rated and installed it.
do you guys think it might be something with the wiring that causes the fuel pump to fail. because as I mentioned even the stock ones failed on me (3 times) and they all didnt last very long. couple months or so.........??
Last edited by walhan_qtr; May 23, 2012 at 04:38 PM.
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 3,966
Likes: 17
From: Ft. Collins, CO
This pump is in my LS7 powered C5. I had a Walbro 255 in the car befor but it wasn't enough pump to feed my new setup with E85. I went with the 400 because I didn't know about the 450lph pump.
I know quite a few people that had been running E85 through their 255s with no problems so I assumed that the 400 would be the same way. I was wrong...
I know quite a few people that had been running E85 through their 255s with no problems so I assumed that the 400 would be the same way. I was wrong...
See I have done some readings on the walbro 400 before I ordered one. and yes even though Walbro says its not E85 compatible, a lot of people are still running it for over 10k miles without a problem. I got this from the Subaru forums and even some people are running them on Evos. I have also contacted a vendor over there that sell those pumps and he said the same thing. he said he never received a single email about the hunderds of 400 pumps he sold over the past I dont know 4-5 years.
but they also run a little less pressure on those pumps on those STIs and EVOs maybe thats why?? It doesnt make sense but I just dont know what else might be causing the problem lol
Instructor
Joined: Jan 2011
Posts: 214
Likes: 0
From: Des Moines, Iowa
Yea some of my Evo friends run the 400 pump on e85 without any issues. They do run lower base fuel pressure (43psi) but at 30psi of boost you're at 73psi, so they do get run at high pressures.
Are you going to put the Walbro 450 in the stock fuel hanger? If so let me know how well it fits, as I would probably buy the same if my z06 pump ever fails. Also interested to see what HP level it supports, with or without a BAP.
Are you going to put the Walbro 450 in the stock fuel hanger? If so let me know how well it fits, as I would probably buy the same if my z06 pump ever fails. Also interested to see what HP level it supports, with or without a BAP.
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 3,966
Likes: 17
From: Ft. Collins, CO
Yea some of my Evo friends run the 400 pump on e85 without any issues. They do run lower base fuel pressure (43psi) but at 30psi of boost you're at 73psi, so they do get run at high pressures.
Are you going to put the Walbro 450 in the stock fuel hanger? If so let me know how well it fits, as I would probably buy the same if my z06 pump ever fails. Also interested to see what HP level it supports, with or without a BAP.
Are you going to put the Walbro 450 in the stock fuel hanger? If so let me know how well it fits, as I would probably buy the same if my z06 pump ever fails. Also interested to see what HP level it supports, with or without a BAP.
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 3,966
Likes: 17
From: Ft. Collins, CO
Thread Starter
Safety Car
Joined: Oct 2008
Posts: 3,966
Likes: 17
From: Ft. Collins, CO
so we put everything back together and we were testing it. fuel pressure is good seems like the pump is working good. we checked the wiring everything is good. but of course it cant be that easy!!?
my fuel gauge didnt work so we had to pull it out again checked the floater and it was free and worked fine no lines blocking it or anything. then we looked at the sender unit and that little thingy with the two metals that touches the board of the sender unit is worn out and it doesn't touch the board very well..
problem is they dont sell that by itself you have to buy the whole thing which cost ~$350 I was going to say f**k the fuel gauge and we were ready to put it back but then realized I will have to do it at some point so few more days wont hurt. with my luck we will have to pull the tanks in couple of months anyway why fix it now LOL
but I thought maybe this time it will last a little longer. 6months or so HAHA
btw we checked the old pump and it wasnt working. I will still send it to see what caused it to fail, hopefully it was just E85... as I would hate if there is another problem causing those pumps to go bad......
my fuel gauge didnt work so we had to pull it out again checked the floater and it was free and worked fine no lines blocking it or anything. then we looked at the sender unit and that little thingy with the two metals that touches the board of the sender unit is worn out and it doesn't touch the board very well..
problem is they dont sell that by itself you have to buy the whole thing which cost ~$350
I was going to say f**k the fuel gauge and we were ready to put it back but then realized I will have to do it at some point so few more days wont hurt. with my luck we will have to pull the tanks in couple of months anyway why fix it now LOL but I thought maybe this time it will last a little longer. 6months or so HAHAbtw we checked the old pump and it wasnt working. I will still send it to see what caused it to fail, hopefully it was just E85... as I would hate if there is another problem causing those pumps to go bad......
