Toyota 2.0 d4d engine 'chuggs' terribly on idle. Stops when rev over 1500rpm. idles at about 7-800rpm, digital rev meter doesn't move but engine chuggs so badly it seems about to stall but does not stall. The problem would stop once engine was warm but recently it's been happening all the time
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There are alot of factors that could prevent the engine from revving over 1500RPM. Some sensors like the crank angle or cam angle have to be connected in order for the engine to even start, other wiring loom plugs like the turbo controller need to be connected or the car goes into limp mode and it won't rev past a certain point.
Then there are the automatic throttle controller area wiring loom type plugs near the inter cooler, sometimes people forget to put them all back and the engine won't rev high. Making sure the vacuum pipes in this area are all connected properly, one unplugged pipe, no vacuum, the injector pump relies on the vacuum system and if it doesn't work then not enough fuel delivery, engine can't rev high. Also if the fuel rail is leaking or if the fuel filter is clogged then engine won't rev high.
All the above is normal , except 2000rpm is a little high at idle . can be adjusted down to 1500rpm. the computer adjusts the engine speed . in drive the transmission loads up the engine idle drops to 1000rpm . in park engine unloaded rpm increase all normal.
Hi!! I have 2006 Toyota quantum it's start but when you rev it it's doesn't came fully ..I don't know what the problem I've spent lots of money now I don't know what to do.
If this is a "fly by wire" throttle, the throttle plate may be dirty and not closing all the way at idle. This can cause a conflict in the computer between the TPS reading, and another sensor. Usually, this will cause the engine to shut down, but weird stuff can happen. Not really familiar with run time error. Ask a dealer service tech what usually sets this code.
It seems that your engine is tuned to very low idle revs, hitting the low resonant frequency of the car at tickover. When in neutral or revving up (moving), the engine stops shaking.
You can have it tuned to be slightly higher so it won't idle so bad, but you'll lose a little bit of fuel efficiency in the bargain.
Alternatively, just shift to neutral - free and easy.
you have a leak in one of your fuel lines . but its not be a outward leak its sucking air .first look at all of the steel lines. if no problem found go to all the rubber lines you are sure to find the problem
rx7`s should rev to 3000 when started cold then it should settle to 750 to 1000 after about 30 to 60 seconds. mine suffers a similar problem. so far I have been told various answers, mostly involving the bac valve, lambda sensor, air flow meter, etc. try starting of by adjusting the idle adjust screw (on top of the throttle body under plastic cover) this may be all it is. I have not had time to do mine. Its been fine otherwise and idles fine after a few minutes. mine is non turbo 87.
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