Since new fuel pump shite starting ARRRRRRRRRRRGGGGHHHHHHHH

[martyjmcfly 0]

Here's the storey fellow VR6 lovers: fuel pump died, new one installed, since then starting has been poor compared to before origional pump died. Used to be instant. Takes a few turns to fire up, in the summer in the heat it was painfully poor - crank crank crank 10 secs and then fire.

 

I had it into VW dealer from where the new pump came, replacement pump fitted again under warranty, also modification pipe fitted to top part assembly. Since then it has been better but the ambient temperature has been lower. Went to AMD and Nathan the VR6 specialist said all was fine - fuel pressure ok etc The bastard thing reasonably started ok. Do i just live with this shite problem HELP!!!!!!!! :(

[vr6storm 0]

could be un-fuel pump related.............have you had the car VAG-COM checked?...........as the long time to start is sometimes associated with the engine coolant temp sensor.......worth trying out

[dr_mat 0]

Also can be associated with leaky injectors, which may be made worse if you've just put a new fuel pump in and are now pushing the proper pressure through the lines. Do you get overfuelling smells like mad when cranking it hot?

And also there's the temp sensor, but it's more likely to be something else.

[martyjmcfly 0]

Ok guys - thanks for the advice - AMD computer has brought up no fault codes and there is no fuel smell when hot etc. only when starting from cold which is common i understand. I doubt its leaky injectors as the car has only just done 80K so i will try the coolant temperature sensor like you have both suggested and keep you posted - thanks again

[theRuler 0]

my vr6 runs like shit some days

but it always starts immediately.

 

poor cold starting may be common, but it is still a fault, and can be fixed.

hope the ooolant temp thing fixes it!

[vr6storm 0]

Ok guys - thanks for the advice - AMD computer has brought up no fault codes and there is no fuel smell when hot etc. only when starting from cold which is common i understand. I doubt its leaky injectors as the car has only just done 80K so i will try the coolant temperature sensor like you have both suggested and keep you posted - thanks again

 

 

the only thing tho..........if there is no fault codes coming up......then its not likely to be a coolant or engine sensor

[dr_mat 0]

Did you check the VAG-COM page for the immobiliser? Has it authorised your key?

[Joe M 0]

Ive had the exact same thing since changing my fuel pump. :(

[martyjmcfly 0]

Its good to know i'm not the only one - not the temp. sensor and all codes check out a ok! Strange, i guess the newer pumps are crapper than the origional one. Thats all i can now think of.

 

Hey Joe - Is the variable manifold worth getting? Is there any real noticable difference?

[Joe M 0]

Ive noticed a bit of difference, but I still have the standard chip in and the rolling road shows im only getting about half the gains I should be. :(

Will need to wait till its chipped to find out if it was really worth the dosh.