Davion Posted 29August, 2015 Report Share Posted 29August, 2015 Hi guys,Need some help here. Was driving around town the whole of today and this only happened towards the end of the day.I was behind a set of lights and changed to 1st gear to get going.The car moved but felt really sluggish, and as the revs rised to 2000rpm, there was a sudden loss of power, and the car gradually came to a stall like the engine was cut. I had to restart the car in the middle of the lights.It happened again for the rest of the journey home. When the car is on 3-4 gear and moving, its fine. But once it gets stuck on a set of lights or traffic, I'll get the same issue of power loss at 1st/2nd gear. The engine then either cuts out (in which case I have to restart the car) or gradually loses power and then suddenly come alive and drives as per normal again. Has this occured to anyone else?- Ken Link to comment Share on other sites More sharing options...
9fan Posted 29August, 2015 Report Share Posted 29August, 2015 Can't say it has, possibly fuel supply - injectors, fuel pump, filter, plugs ? Link to comment Share on other sites More sharing options...
firstone Posted 29August, 2015 Report Share Posted 29August, 2015 Has it thrown a check light on the gauges? If not, I'd go to your battery terminals and check they are good. Then engine earth. Link to comment Share on other sites More sharing options...
Davion Posted 30August, 2015 Author Report Share Posted 30August, 2015 Nope no CEL lights thrown. Reading the symptoms online seem to indicate issue with the Mass air flow sensor. or the fuel injector.. Hopefully nothing serious... Link to comment Share on other sites More sharing options...
MFX Posted 30August, 2015 Report Share Posted 30August, 2015 Could be a vacuum leak. Possibly a hose come off somewhere. Link to comment Share on other sites More sharing options...
firstone Posted 30August, 2015 Report Share Posted 30August, 2015 The MAF can be cleaned using electrical contact cleaner. Link to comment Share on other sites More sharing options...
TE911 Posted 30August, 2015 Report Share Posted 30August, 2015 My 986 had to have its mass air flow sensor changed its a common problem.My 986 never stalled on me but did choke on lower gears. As soon as the car warmed up it drove fine.http://www.pelicanparts.com/techarticles/Boxster_Tech/27-FUEL-Mass_Air_Flow_Sensor/27-FUEL-Mass_Air_Flow_Sensor.htm Link to comment Share on other sites More sharing options...
tazzieman Posted 30August, 2015 Report Share Posted 30August, 2015 Have you cleaned it?http://986forum.com/forums/diy-project-guides/25167-maf-cleaning-easiest-project-yet-must.htmlAlways worth a try , fixing stuff! Link to comment Share on other sites More sharing options...
ANF Posted 30August, 2015 Report Share Posted 30August, 2015 What revs did it do it at? A faulty MAF usually affects lower revs/ off idle and should be fine when you rev it?They are a service item at around 100000km and are usually not expensive and can also be cleaned as stated above (wife's was recently cleaned in her Volvo to good effect)Have you checked for codes? Link to comment Share on other sites More sharing options...
Davion Posted 31August, 2015 Author Report Share Posted 31August, 2015 Going to autohaus tomorrow morning to have it looked at. Yup it chokes on lower gears and around the 2000rpm mark. Revving it higher cuts the power off as well. Also it happened towards the end of the drive in the evening (we were out for most of the day) so I don't believe it's a warm up issue. Not sure if it's related but I did rmb clearing all counters on the dashboard and popping in new CDs for the first time earlier during the day. Highly doubt it's related but might as well throw it out here anyway. Also noted that my fuel consumption is terrible at 15l/100km. Any chance of brake dust going into the vents andgand dirtying the sensors in the engine bay? I always notice that the vent entrance on the sides are always dirty Link to comment Share on other sites More sharing options...
Russ Posted 31August, 2015 Report Share Posted 31August, 2015 have you plugged it into a diganostic computer to see if it has any codes? personally that'd be the first step i'd take on a newer carmight be worth getting the software and a bluetooth code reader, or one of the durametrics if you're going to do alot of work yourself Link to comment Share on other sites More sharing options...
Mike D'Silva Posted 7September, 2015 Report Share Posted 7September, 2015 Not sure if it's related but I did rmb clearing all counters on the dashboard and popping in new CDs for the first time earlier during the day. Hmmm.... what cd's did you put in? maybe it doesn't like the new tunes? Link to comment Share on other sites More sharing options...
Davion Posted 8September, 2015 Author Report Share Posted 8September, 2015 Lol.. How can one not like foo fighters?Anyways, haven't been able to replicate this. The MAF has been cleaned though so have to see if this will reoccur. Link to comment Share on other sites More sharing options...
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