Hi,
have old Audi A4 which now won't tick over at all... starts up fine but if you take foot off the accelerator, it just dies.. was running fine up to this w/e..
When last did you have your car serviced, if you have a grim builtup on the sensors this will affect the management system, a good clean and reset can overcome this problem,,, Ray
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trip computers are notoriously jumpy because mpg is directly relative to throttle position and load. its not a fault. if the reading is steady when u hold accelerator position and gear then its working just fine. mpg will change as gears and accelerator position change because the engine is constantly changing load requirements. in other words the more u put ur foot down the more the reading changes.
Hi,
Sounds like sudden electrical failure,likely causes are crank shaft position sensor or engine control relay failure both are common,could be bad earth connection
it sounds like a stuck open throttle body. take off the air intake hose and see what it looks like, if it is carbonated that is the place to start. it could be a huge multitude of issues but start simple and work your way up from there. keep me posted
I just went through lots of troubleshooting and expense on my 1996. Whenever I would lift my foot off the accelerator and was below about 30 mph, the rpm's would starts jumping around and sometimes it would stall. If I gave it a little gas (accelerator), I could sometimes keep it running. It also backfired once in a while. Starts right back up. Also, if I let it idle while in part, it would die after 1-2 minutes.
I ended up finding a hole in the fuel regulator. About a ~$70 part if you get an AC Delco, but very simple to change.
I am having a similar problem on a 2003 Volkswagon Passat 1.8L 4 cylinder manual engine. My batter (after 10 years of service) died about a month ago. When the engine is cold and I start it up the engine (if I do not carefully add gas to rev the engine) will idle at around 200 to 400 RPM and then stall. The problem does not occur after the engine has been going for more than about 90 seconds. No check engine light is on. Ideas anyone?
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