p38 help please

kev87 · Jan 24, 2010

hi i have a p38 when cold it runs ok. When hot tick over is ok but when you take it up to 4000 revs it starts to miss fire and cough, splutter and will not rev over 4000 revs

gavbriggs · Jan 24, 2010

have you had it on computer?

you need to make sure plugs and leads are good, they often breakdown under load.

once you can see live data from the ecu you can get a picture of what is happening.

kev87 · Jan 24, 2010

it is not coming up with any ecu faults and it is now plugs and leads

kev87 · Jan 25, 2010

it is still doing it

Ray38 · Jan 25, 2010

Mine had a similar thing. Could be the MAF sensor. When it does it again try unplugging the MAF.

kev87 · Jan 25, 2010

wot is the maf

kev87 · Jan 25, 2010

will it run if i take it off

Ray38 · Jan 26, 2010

Its on the end of the intake pipe, just after the filter. Just unplug the cable from it

kev87 · Jan 26, 2010

it wont run with out it

Cavey_P38 · Jan 26, 2010

try starting motor, get a friend to keep a foot on the throttle and unplug it while it is running

See what happens then

kev87 · Jan 27, 2010

got a new one coming just hope it works

kev87 · Feb 6, 2010

Just an update have taken it to the garage and put it on the diagonistics and it came up with the air flow meter so have changed that and it isn't doing it as much but still sits at 4000 revs and won't go past it! Any other ideas of what could be wrong??

gavbriggs · Feb 6, 2010

what are the readings from lambdas? maybe it needs time to adjust or a reset?

kev87 · Feb 6, 2010

when it was on the diagonistics machine it would not if any readings from the lambdas

gavbriggs · Feb 6, 2010

trouble is trying to sort a problem with only half the info!!! you'll end up guessing and possibly guessing wrong!!

kev87 · Feb 6, 2010

wot do you think i should do take it back to the garage

gavbriggs · Feb 6, 2010

thats gonna keep costing, it'd be handy if anyone with a elm327 was in your area or you can get free garage time!!!!

kev87 · Feb 6, 2010

hi is this wot you mean 180462514841 it is on eday thanks

gavbriggs · Feb 6, 2010

220549912867 is the type i have but i think they are all the same inside!

kev87 · Feb 6, 2010

so if i get that it will work with my 95 rr

p38 help please

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