Would this cause hesitation?

[interloper393]

Took my car for a drive and theres hesitation around 3500rpm, read a few things so changing the plugs, redoing a earth to the chassis but would the air pump cause it? seemed to run fine then started jumping on throttle increase n not running worth a toss..

Also fixed this valve we glue, would this cause it? have one coming soon so will be replaced..:wave

[banned advertiser]

water sensor can do this, it tells the ecu its still cold so cars runs in warm up mode. That was the cause of mine and sensor fixed it.

[interloper393]

the cars also dosnt have its sponge filters on for the twin air filters..there on order 2

[interloper393]

are the sensors dear? also where are they located bud

[banned advertiser]

http://www.rotaryart.uk.com/acatalog/New_3rd_gen_engine_perf_tuning.html
right at bottom of page. £20

[interloper393]

ok, any word on the filters?

[interloper393]

bumpyeeeeeeeeeeee

[Ricco_04]

You can just disconnect the airpump with the electrical connector which sort of on top of it.  Give it a try and see if it makes a difference - dont leave it off too long if you still have a cat in......

[interloper393]

cheers i`ll try it should the pipe be blocked or have a filter? it sounds kinda mooooy/raspy at times.

[Ricco_04]

Yeah, there should be a restrictor type bung in place to help reduce the mooing noise the airpump makes (It reduces it to only a few mm).

[interloper393]

fankoo kind sir off to the garage to make a reducer then lol.. so say 2mm for the hole?

[Ricco_04]

Mmmmmm cant remember to be honest fella - hopefully someone can advise you though - I fitted mine a while ago and the brain is not too good anymore! :chat but just for info, the one I had with mine was just ali.

The airpump should pull the air from your filters - sounds silly but you do have the rubber hose that goes from the airpump to the filters attached?

[interloper393]

umm no lol its as you see it in the picture, its just open :s

[Ricco_04]

That wont help the noise but as the air is not going into the engine I guess it\'s not too bad - I would still stick a filter on there or get some pipe going to your filters, even if you use a breather filter I would think that good enough?