hey guys i just put in my walbro 255 fp and a mail in dynoflash. I hooked everything up and the car idles fine but does not respond to all throtle inputs. I can rev it but it sputters on the way up and sometimes just cant make the rpms climb?????? What did i do wrong???!!!!

 

are the connections on fuel pump alright ?? check your ecu plugs make sure none of the wires came off when you pulled it out

 

yeah i just took a look at all the connections to the ecu and also the pump again and everything is snug!

 

Put the stock pump back on to see if it's a pump issue or flash issue...

 

How u know its not the flash?

 

good idea!!! Ill brb then....

 

alright... stock pump is back in and now the car wont even start!!!!

That must mean the flash is the problem correct?

 

Do you reuse the white donut shape washer at the pump outlet and the black rubber washer at the bottom of the pump?


Without those, you will have the problems for sure.

 

the walbro pump came with a washer on the pump the only one i had to reuse was the black piece at the bottom. and like i said...i put the stock one back on and it wouldnt even start!

is there anything else it could be..I called Al at dynoflash they didnt answer the phone so i wrote them an email...no response yet.

 

does anyone else have any ideas???? i called Al again at dynoflash left him a message and then also today i wrote him another email!!!! no response yet! my car looks so lonely just sitting in my garage!!! specialy with me driving my big red work van for the past week!!!!!!!

 

Just a thought check to make sure your pump is getting power maybe the fuse for the pump blew when installing the stock one back in its worth a shot.

 

Probably not the flash... make sure that all connections on the pump are good and that the sending unit gasket is on and good.. When you disconnected it did you pull a pump relay? you should have to get all the fuel outta the line by turning the key a few times... make sure the pump fuse is good.. check em out.. you may gave blown something..

 

I put the walbro back in now and i know its getting power because i do get the car to start and idle correctly. I can also hear the pump whinning.. its misfiring...and not responding to throtle inputs. I can slowly bring the revs all the way to 5 or 6 (i dont really like running the car now for obv reasons) i hear tons of misfires and if i press too quick on the throtle it misfires like crazy and just dies right down until i get off the gas!

 

r there any tests i can run to help narrow down the problem? i really dont want to bring it to the dealership with the ECU flashed and the new fp and be like well i dont know whats wrong? I dont think that will be covered under warranty

 

I think its a tuning problem, you said if you put the stock one in it runs fine right? so warranty deffinately couldnt help you out.