GolfGTIforum.co.uk
General => New forum members => Topic started by: greener on 08 July 2013, 22:01
-
Hi there
I bought a mk3 8v and I need some help/ideas.
It ran for a couple of weeks then started cutting out then completely died.
I've changed the distributor, throttle body, crank sensor, plugs and leads, even tried a different ecu and fusebox in it but it still wont work, it will start then it will rev and dip then cut out .
I really like the car and dont want to get rid, anybody got any suggestions.
Cheers
-
hi can you here the fuel pump running when you put ignition on?
-
Hi
Yeah have good fuel flow
-
could be the cat broken up. does the exhaust note sound any different recently?
-
Oh rite, yeah did sound a bit different
-
try taking out your lambda probe and start it. does the car idle properly?
-
It idles for about 30 secs then revs and dips then cuts out
-
do you mean it revs on its own then cuts out?
-
Yeah it revs by itself then dips then revs then cuts out
-
hi what year is the car? and do you know if its an agg or a 2e engine that's in it?
-
Hi its an R reg 98, its an agg engine
-
Hi its an R reg 98, agg engine
-
ah right. there is quite a few running faults they suffer from. but first thing I would try is removing throttle body and give it a good clean and see if that helps. oh does the car start up straight away after it cuts out???
-
Hi yeah it starts up straight away after, the throttlebody has been replaced and was pretty clean before I installed but I will try that , thanks
-
was the throttle body replaced because of this problem? or did problem start after? and do you have to press throttle to restart car?
-
I replaced the throttle body after the problem started , no starts normally aftrwards.
It will idle at the moment for a little, but as soon as u press the accelerator and get to about 2000 revs it cuts and dips
-
You taken it to a trusted garage to have a full service etc
-
Its been at a garage for the last 2 weeks, they hsve tried finding the fault but now they have given up on it , so now im stuck with no idea
-
if you start it and leave it idling. will it stay running until you hit the gas?
-
Yes most of the time
-
well I had a problem with my mk2 a couple months ago. when started from cold it would idle fine for as long as I wanted. but as soon as I hit the throttle it would misfire and cut out. then wouldn't start again for about 15 mins. turned out the pressure relief valve in the oil pump was stuck. was fine at idle when the pump was turning slowly but as soon as it was revved the oil pressure would shoot up and overpressurise the hydraulic lifters and keeping the valves open. so I would get an oil pressure test just to be sure. it may not be your issue but there is a chance.
-
oh have you tried running it with the maf disconnected?
-
Ok cool, ive been told that the oil pressure was ok but im thinking about getting another garage to have a look, will ask them to check that, yeah tried with maf disconnected still same problem.
Thanks :smiley:
-
Had the valve out cleaned it, still not sorted, got no more ideas apart from scrapping it
-
its been a bit elusive this fault eh. have you tried a different throttle position sensor? also check all your pipes and hoses very carefully for air leaks. and check your wiring to sensors for breaks or corrosion.