vr6 is being jollity through acceleration

[p0u1 14]

well my car was running fine till about a week ago, right now its accelerating fine then loseing power for a a few seconds then going back to normal and it just keep happening when my foots on the floor.

i suspect its going to be the maf or grounds or something like that but im not to sure and dont know where to start, the ground cables are all new, the wiring was all done a few months ago as i swapped the vr6 into my car a few months ago,

just asking if anyone has had the same problem, and what there fix was???

or any ways i can go around to work out the problem?

cheers paul

[VR6Nat 9]

Could be a few things, try running the car without the maf and see if it runs ok, if so clean it with some contact cleaner.

If not then look at all the plugs and leads and coilpack (if you have one) does it idle smoothly?

[p0u1 14]

i have run it without the maf and it still dose it, the coil pack and spark plugs are newish the leads arnt though.

it allmost feels like theres a shortege of fuel, its not backfireing just randomly loseing like half of its power.

its obd2 ecu and electronics and im running it on 99ron from tescos, but its doing it with all fuels.

if it helps im preatty sure it dont do it when its cold (but i dont like flooring cold engines so i have not tested that theory to much)

when my coil pack went last like it just sort of ran like crap not good then a few short moments of crap.

i guese i could try clean the maf with some isp solvent and see if that helps.

oh yea i swapped the engine in my self and wired it my self and its been fine till a few weeks ago, it still has the mk3 1.6 fuel pump which is a 3bar rather than 4bar pump but like i say it ran fine for 3months.

[p0u1 14]

oh it idles around 700rpm and yea smothly.

[spadam 7]

I thought the vr6 pump flowed more fuel and if your running the 1.6 fuel pump you could of been using the pump at its limit and now it has died.

[p0u1 14]

well after soaking the MAF sensor for 30mins in alcohol it seems to run alot better, its not being retarded anymore.

thanks for the help

[p0u1 14]

ok back a few steps again :-/ does any one know if the k&a pannel fillter might be causeing problems, its just a mesh one but i herd of people contaminating there MAF fith the oils off them or something?

[spadam 7]

If you over oil the filter the oil can damage the maf but if you have just cleaned your maf you should be fine unless maf is broken.

[p0u1 14]

well i think the MAF is on its way out, made the problem less frequent, but its still there, im going to spend some time under the bonnet tomorrow, laying down grounds and cleaning bad connectors up, then if the problem stays i will have to start changing things, i will hock up vag com tomorrow to see if it tells me anything