Car starts from cold and will idle if driven will only travel a few hundres metres before engin cuts out or if switched off while stationary will not start again until engin cools down. Also after engin cuts out or switched off diseal pump makes buzzing sound that also stops when engin cools at which time the car may be started again? Engin management codes read from snap-on reader include: 00104, 01570, 32772, 00195, 12293, 13057, 05376, 00316, 01553, 00518, 31795, 08576, 08448, 27208, 02180, 00085, 00046, 04866,19968, 26731, 01536. Unable to clear codes using snap-on device.
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Re: renault megan scenic dti diognostic fault codes
Whats else do you expect ,snap on code reader your having a laugh .YOU HONESTLY EXPECT TO READ A RENAULT ???????????????WITH ENCRYPTED SOFTWARE .sounds like an ECU problem but it could be something simple on the fuel injection system but without hearing the noise to know if its air in pump or an electrical buzz .check fuel IN line for ingression of air first ,also check for return in case its blocked causing the pressure to build up to high .call a scrapyard then report vehicle stolen and make a claim .this is a renault remember its designed to be dealer only repairs not weekend mechanics
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I had an experience with a 1984 T-Bird with a 302. The 1986 may have the same system. With that car there was a temperature sensor that affected the idle speed once the car was close to warming up.
With even later models there is a "cold start sequence" which is an electronic way of replacing the ancient choke. The "cold" feature set the fuel mix and the RPM and made starts easier. Now you did not say if the starting problem was when hot or cold or both.
The poor performance when slowing down can be related to the idle rpm being set too low once the thermal switch cuts out. What happens is someone tunes the engine for a rpm that may be correct for the car, but the thermal switch has not dropped the rpm yet. Then when the car really heats up, the idle drops even lower and when you take off your foot from the throttle, the throttle closes too much and the engine cuts out when you are slowing.
Put in a new thermostat. The idle settings can not be set until the thermal switches activate to a run position. Also you may have some vacuum lines crossed which are making the cold and hot cycles reverse. There should be a label with vacuum line routing shown stuck on a part that holds the radiator.
sounds like the MAP sensor but i'd have the OBD codes read, as this will pinpoint the sensor/switch and will save you time and money as there are a few things that could cause this , and searching blind and changing parts that may not need changing
you stated the bad , but what is the good.
can it be driven? with full power.
your car has no year? and if working engine,? what engine? option
ever get a 60,000 mile tune up this decade? (just old spark plugs do this)
you start the cold engine/
can you keep it running, with a fast right foot action?
starts after 5min, then runs perfect all day???????
If the pedal is operating the clutch and its not a hydraulic problem then you do the mechanics trick of the trade ,warm up engine then turn it off ,now selsct first gear -handbrake off and start car in gear and drive with foot on clutch ,jerk the car a bit with the throttle and the clutch will release in the first hundred metres or so ,well they normally do anyway
This car doesn't have coils and wires, it's gasoil. The most likely reason is the piezo injectors are worn. The best way to test is with VCDS After an overnight stationary period drive the vehicle with cold engine between 1200 - 1600 rpm till the complaint occurs. Constantly read the measured value block 13 and 14 for the smooth running control in the engine control unit. The values of one or several cylinders should noticeably move to positive.
modified injectors A8: with 3.0l, 4.2l TDI from: WAUZZZ4E*7N016685 Replace the injector with the highest deviation and all injectors produced between 1.3.2006 and 30.4.2006. Example of production date: 060304 stands for 4.3.2006 vcds go to address 01 measured values below 013 Smooth running control1)Cyl. 1 Injection quantity variation[mg/stroke]2)Cyl. 2 Injection quantity variation[mg/stroke]3)Cyl. 3 Injection quantity variation[mg/stroke]4) VacantPermissible values at idle: +- 2,99 mg/strokeA If the permissible tolerance is exceededfirst check injector IQA-IVA adaption values 014 Smooth running control1)Cyl. 4 Injection quantity variation[mg/stroke]2)Cyl. 5 Injection quantity variation[mg/stroke]3)Cyl. 6 Injection quantity variation[mg/stroke]4) VacantPermissible values at idle: +- 2,99 mg/strokeA If the permissible tolerance is exceededfirst check injector IQA-IVA adaption values
WHEN YOU DISCONNECT THE BATTERY THE ENGINE MANAGEMENT SYSTEMS PCM LOSES IT MEMORY INCLUDING ENGINE IDLING.THE COMPUTER WILL HAVE TO RELEARN THE OPERATING VALUES. IF CAR DOES A LOT OF STALLING AT STOP LIGHTS AND STOP SIGNS. GO BY FORD DEALERSHIP LET THEM REPROGRAM THE PCM.PROBABLY CHARGE YOU $35.00 DOLLARS. TO REPROGRAM PCM.